ISOLYSER CO INC /GA/
POS AM, 1996-07-03
ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES
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<PAGE>
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 3, 1996
 
                                                       REGISTRATION NO. 333-3436
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
                         POST-EFFECTIVE AMENDMENT NO. 1
                                       TO
                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
                             ISOLYSER COMPANY, INC.
             (Exact name of Registrant as specified in its charter)
 
<TABLE>
<S>                               <C>                              <C>
            GEORGIA                            5047                     58-1746149
(State or other jurisdiction of    (Primary Standard Industrial      (I.R.S. Employer
 incorporation or organization)     Classification Code Number)    Identification No.)
</TABLE>
 
                           --------------------------
 
                       4320 INTERNATIONAL BOULEVARD, N.W.
                            NORCROSS, GEORGIA 30093
                                 (770) 381-7566
         (Address, including zip code, and telephone number, including
            area code, of Registrant's principal executive offices)
                         ------------------------------
 
                          ROBERT L. TAYLOR, PRESIDENT
                             ISOLYSER COMPANY, INC.
                       4320 INTERNATIONAL BOULEVARD, N.W.
                            NORCROSS, GEORGIA 30093
                                 (770) 381-7566
      (Name, address, including zip code, and telephone number, including
                        area code, of agent for service)
                         ------------------------------
 
                          COPIES OF CORRESPONDENCE TO:
 
          Stephen D. Fox, Esq.                     Bruce Hallett, Esq.
        Arnall Golden & Gregory                   Crouch & Hallett, LLP
       1201 West Peachtree Street            717 North Harwood -- Suite 1400
      Atlanta, Georgia 30309-3400                    Dallas, TX 75201
             (404) 873-8500                           (214) 953-0053
 
                           --------------------------
 
   APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF THE SECURITIES TO THE
                                    PUBLIC:
 
As  soon as practicable after this  Registration Statement becomes effective and
all other conditions  to the proposed  merger (the "Merger")  of a wholly  owned
subsidiary  of the Registrant with and  into Microtek Medical, Inc. ("Microtek")
pursuant to  the Agreement  and Plan  of Merger,  dated as  of March  15,  1996,
attached  as Appendix  A to the  enclosed Proxy Statement/  Prospectus have been
satisfied or waived.
 
    If the  securities  being registered  on  this  Form are  being  offered  in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. / /
                           --------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                 ADDITIONAL                       PROPOSED MAXIMUM     ADDITIONAL
                                                 AMOUNT TO      PROPOSED MAXIMUM     AGGREGATE         AMOUNT OF
           TITLE OF EACH CLASS OF              BE REGISTERED     OFFERING PRICE    OFFERING PRICE   REGISTRATION FEE
        SECURITIES TO BE REGISTERED                 (1)            PER SHARE            (2)               (3)
<S>                                           <C>               <C>               <C>               <C>
Common stock, $.001 par value...............     2,785,427            N/A          $24,847,274.95      $8,568.03
</TABLE>
 
(1) Based upon (a) the  maximum number of shares  of Microtek Common Stock  that
    would  be outstanding  immediately prior  to the  merger of  Microtek with a
    subsidiary of  the Registrant  if all  options to  purchase Microtek  Common
    Stock,  other  than options  to purchase  an aggregate  of 50,000  shares of
    Microtek Common  Stock  which will  not  then  be exercisable,  were  to  be
    exercised  and (b)  the maximum  exchange ratio  of 1.65  shares of Isolyser
    Common Stock for  each share of  Microtek Common Stock,  as provided in  the
    Agreement  and  Plan of  Merger,  attached as  Annex  A to  the  Joint Proxy
    Statement/Prospectus forming a part of this Registration Statement.
 
(2) Estimated  solely  for  the  purpose of  calculating  the  registration  fee
    required  by Section  6(b) of  the Securities Act  of 1933,  as amended (the
    "Securities Act"), and computed pursuant to Rule 457(f) under the Securities
    Act based on  $14.71875, the  average of  the high  and low  sale prices  of
    Microtek  Common Stock on  The Nasdaq Stock  Market on July  1, 1996 and the
    maximum number of shares of Microtek Common Stock to be acquired.
 
(3) An aggregate Registration  Fee of $35,293.98 has  previously been paid  with
    respect to shares previously registered.
 
                         ------------------------------
 
    THE  REGISTRANT HEREBY  AMENDS THIS REGISTRATION  STATEMENT ON  SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A  FURTHER  AMENDMENT  WHICH SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT  SHALL THEREAFTER BECOME EFFECTIVE IN  ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT  OF 1933  OR UNTIL  THE REGISTRATION  STATEMENT SHALL  BECOME
EFFECTIVE  ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                             ISOLYSER COMPANY, INC.
                             SHARES OF COMMON STOCK
                   TO BE ISSUED IN CONNECTION WITH THE MERGER
             OF A WHOLLY OWNED SUBSIDIARY OF ISOLYSER COMPANY, INC.
                                      INTO
                             MICROTEK MEDICAL, INC.
 
                            ------------------------
 
                             CROSS REFERENCE SHEET
 
<TABLE>
<CAPTION>
                                                                           LOCATION OR HEADING IN JOINT PROXY
FORM S-4 ITEM NUMBER AND CAPTION                                                  STATEMENT/PROSPECTUS
- ----------------------------------------------------------------  -----------------------------------------------------
<C>        <S>                                                    <C>
PART I.  INFORMATION REQUIRED IN THE PROSPECTUS
A.  INFORMATION ABOUT THE TRANSACTION
       1.  Forepart of Registration Statement and Outside Front
            Cover of Page Prospectus............................  Outside Front Cover Page of Joint Proxy
                                                                  Statement/Prospectus
       2.  Inside Front and Outside Back Cover Pages of
            Prospectus..........................................  Inside Front Cover Page of Joint Proxy
                                                                  Statement/Prospectus
       3.  Risk Factors, Ratio of Earnings to Fixed Charges and
            Other Information...................................  Summary
       4.  Terms of the Transaction.............................  Outside Front Cover Page of Joint Proxy
                                                                  Statement/Prospectus; The Merger; Summary;
                                                                  Comparative Rights of Isolyser Shareholders and
                                                                  Microtek Stockholders
       5.  Pro Forma Financial Information......................  Isolyser and Microtek Pro Forma Combined Financial
                                                                  Information; Isolyser Pro Forma Combined Financial
                                                                  Information; Microtek Pro Forma Combined Financial
                                                                  Information
       6.  Material Contracts With the Company Being Acquired...  The Merger
       7.  Additional Information Required for Reoffering by
            Persons and Parties Deemed to be Underwriters.......  Not Applicable
       8.  Interests of Named Experts and Counsel...............  Not Applicable
       9.  Disclosure of Commission Position on Indemnification
            for Securities Act Liabilities......................  Not Applicable
 
B.  INFORMATION ABOUT THE REGISTRANT
      10.  Information with Respect to S-3 Registrants..........  Incorporation of Certain Information by Reference
      11.  Incorporation of Certain Information by Reference....  Incorporation of Certain Information by Reference
      12.  Information with Respect to S-2 or S-3 Registrants...  Not Applicable
      13.  Incorporation of Certain Information by Reference....  Not Applicable
      14.  Information with Respect to Registrants Other than
            S-2 or S-3 Registrants..............................  Not Applicable
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                           LOCATION OR HEADING IN JOINT PROXY
FORM S-4 ITEM NUMBER AND CAPTION                                                  STATEMENT/PROSPECTUS
- ----------------------------------------------------------------  -----------------------------------------------------
<C>        <S>                                                    <C>
C.  INFORMATION ABOUT THE COMPANY BEING ACQUIRED
      15.  Information with Respect to S-3 Companies............  Not Applicable
      16.  Information with Respect to S-2 or S-3 Companies.....  Incorporation of Certain Information by Reference
      17.  Information with Respect to Companies Other Than S-2
            or S-3 Companies....................................  Not Applicable
 
D.  VOTING AND MANAGEMENT INFORMATION
      18.  Information if Proxies, Consents or Authorizations
            are to be Solicited.................................  Incorporation of Certain Information by Reference;
                                                                  The Meetings; The Merger
      19.  Information if Proxies, Consents or Authorizations
            are not to be Solicited or in an Exchange Offer.....  Not Applicable
 
PART II.  INFORMATION NOT REQUIRED IN THE PROSPECTUS
      20.  Indemnification of Directors and Officers............  Part II, Indemnification of Directors and Officers
      21.  Exhibits and Financial Statement Schedules...........  Part II, Exhibits and Financial Statement Schedules
      22.  Undertakings.........................................  Part II, Undertakings
</TABLE>
<PAGE>
                                                                PRELIMINARY COPY
 
                             MICROTEK MEDICAL, INC.
                               512 LEHMBERG ROAD
                          COLUMBUS, MISSISSIPPI 39702
                                 (601) 327-1863
                            ------------------------
 
                                                                          , 1996
Dear Stockholder:
 
    You  are cordially  invited to attend  a Special Meeting  of Stockholders of
Microtek Medical, Inc. ("Microtek") at 10:00 a.m., local time, on        , 1996,
at the executive offices of  Microtek, 512 Lehmberg Road, Columbus,  Mississippi
(together  with any adjournments or postponements thereof, the "Microtek Special
Meeting") .
 
    At the Microtek Special Meeting, you will be asked to consider and vote upon
a proposed merger (the "Merger") of MMI Merger Corp., a wholly-owned  subsidiary
of  Isolyser Company, Inc. ("Isoloyser"), into Microtek. The Merger is described
in the attached Notice of Special Meeting and Joint Proxy  Statement/Prospectus.
Upon  consummation of the Merger, Microtek will become a wholly owned subsidiary
of Isolyser, and holders of each share of Microtek Common Stock will be entitled
to receive such number of shares of Isolyser Common Stock as are equal to $16.50
divided by the "Determination Price" of  Isolyser Common Stock. Under the  terms
of  the Merger,  the"Determination Price" will  be equal to  the average closing
price (but in no  event lower than  $10.00 or greater  than $15.00) of  Isolyser
Common  Stock as  reported on The  Nasdaq Stock  Market for the  20 trading days
immediately preceding the fifth trading day  prior to the effective date of  the
Merger.
 
    At  the meeting, you will also be asked to approve an amendment (the "Option
Proposal") to Microtek's 1990 Incentive Stock Option Plan (the "Option Plan") to
increase the number of shares of Microtek Common Stock issuable upon exercise of
stock options under the Option Plan from 883,302 to 1,083,302 shares. Such stock
options will be converted  into the right to  purchase Isolyser Common Stock  if
the Merger is consummated.
 
    The   enclosed   Joint  Proxy   Statement/Prospectus  provides   a  detailed
description of the matters to be considered at the Special Meeting and extensive
information concerning Microtek and Isolyser. A  copy of the Agreement and  Plan
of  Merger pertaining to  the Merger is attached  as Annex A  to the Joint Proxy
Statement/Prospectus.  Please  carefully  review   and  consider  all  of   this
information.
 
    Also  enclosed is Microtek's Annual Report on Form 10-K/A for the year ended
November 30,  1995, and  Quarterly Report  on Form  10-Q for  the quarter  ended
February 29, 1996.
 
    AFTER  CAREFUL  CONSIDERATION,  THE  BOARD  OF  DIRECTORS  OF  MICROTEK  HAS
UNANIMOUSLY APPROVED THE MERGER AGREEMENT AND THE OPTION PROPOSAL AND RECOMMENDS
THAT STOCKHOLDERS  VOTE  "FOR" APPROVAL  AND  ADOPTION OF  THE  PROPOSED  MERGER
AGREEMENT AND "FOR" THE OPTION PROPOSAL AT THE MICROTEK SPECIAL MEETING.
 
    It is important that your shares be present at the Microtek Special Meeting,
regardless  of the number of  shares you hold. Therefore,  please sign, date and
return your proxy card as soon as  possible, whether or not you plan to  attend.
This  will not prevent you from voting your shares in person if you subsequently
choose to attend.
 
                                          Very truly yours,
                                          Kimber L. Vought
                                          PRESIDENT AND CHIEF EXECUTIVE OFFICER
<PAGE>
                                                                PRELIMINARY COPY
 
                                     [LOGO]
                             ISOLYSER COMPANY, INC.
                       4320 INTERNATIONAL BOULEVARD, N.W.
                            NORCROSS, GEORGIA 30093
                            ------------------------
                                                                          , 1996
Dear Shareholder:
 
    You are cordially invited to attend a Special Meeting of the Shareholders of
Isolyser Company, Inc. ("Isolyser") at 10:00 a.m., local time, on        , 1996,
at the  executive  offices  of Isolyser,  4320  International  Boulevard,  N.W.,
Norcross,  Georgia (together with any adjournments or postponements thereof, the
"Isolyser Special Meeting").
 
    At the Isolyser Special Meeting, you will be asked to consider and vote upon
the proposed  acquisition by  Isolyser of  Microtek Medical,  Inc.  ("Microtek")
through  a  proposed  merger  (the "Merger")  of  a  wholly-owned  subsidiary of
Isolyser into Microtek. In the event of the consummation of the Merger, Microtek
would become a wholly-owned  subsidiary of Isolyser.  To accomplish the  Merger,
Isolyser would issue such number of shares of Isolyser common stock per share of
Microtek common stock as is equal to $16.50 divided by the "Determination Price"
of Isolyser common stock. The "Determination Price" will be equal to the average
closing  price (but  in no event  lower than  $10.00 or greater  than $15.00) of
Isolyser common stock as reported on The Nasdaq Stock Market for the twenty (20)
trading days immediately preceding the fifth trading day prior to the  effective
date  of the Merger. Approval  of the issuance of  such Isolyser common stock is
being sought in compliance with certain rules of The Nasdaq Stock Market.
 
    The  attached   Joint  Proxy   Statement/Prospectus  provides   a   detailed
description  of the matters to be considered at the Isolyser Special Meeting and
extensive information concerning Microtek and Isolyser. A copy of the  Agreement
and  Plan of Merger pertaining to the Merger is attached as Annex A to the Joint
Proxy Statement/Prospectus. Please  carefully review  and consider  all of  this
information.
 
    YOUR  BOARD OF DIRECTORS BELIEVES THAT THE MERGER IS IN THE BEST INTEREST OF
ISOLYSER AND ITS SHAREHOLDERS. THE BOARD HAS UNANIMOUSLY APPROVED THE MERGER AND
RECOMMENDS THAT YOU VOTE IN FAVOR OF  THE PROPOSAL TO ISSUE THE ISOLYSER  COMMON
STOCK TO CONSUMMATE THE MERGER.
 
    It  is important that your  shares be present at  the meeting, regardless of
the number of  shares you  hold. Therefore, please  sign, date  and return  your
proxy  card as soon as  possible, whether or not you  plan to attend. This shall
not prevent you from voting your shares in person if you subsequently choose  to
attend.
 
                                          Sincerely,
 
                                          Robert L. Taylor,
                                          PRESIDENT, CHIEF EXECUTIVE OFFICER AND
                                          CHAIRMAN OF THE BOARD
<PAGE>
                                                                PRELIMINARY COPY
 
                             MICROTEK MEDICAL, INC.
                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS
                                 TO BE HELD ON
                                        , 1996
 
To The Stockholders of
Microtek Medical, Inc.:
 
    Notice  is hereby given  that a Special Meeting  of Stockholders of Microtek
Medical, Inc., a Delaware corporation  ("Microtek"), will be held  on          ,
1996,  beginning at 10:00 a.m. local time, at Microtek's offices at 512 Lehmberg
Road, Columbus,  Mississippi (together  with any  adjournments or  postponements
thereof, the "Special Meeting"), for the following purposes:
 
    1.   To consider and vote upon  a proposal to approve that certain Agreement
       and Plan of Merger, dated March 15, 1996 and amended as of June 23,  1996
       (the  "Merger Agreement"), by and among Microtek, Isolyser Company, Inc.,
       a Georgia corporation ("Isolyser"), and  MMI Merger Corp. (the  "Isolyser
       Subsidiary"),  pursuant  to  which,  among  other  things,  the  Isolyser
       Subsidiary will be merged with and into Microtek and Microtek will become
       a wholly owned subsidiary  of Isolyser, and each  issued share of  Common
       Stock of Microtek will be converted into the right to receive such number
       of  shares of  Common Stock  of Isolyser equal  to $16.50  divided by the
       "Determination Price" (as defined in the Merger Agreement);
 
    2.   To  consider and  act  upon a  proposed  amendment to  Microtek's  1990
       Incentive Stock Option Plan (the "Option Plan") to increase the number of
       shares  of  Common  Stock of  Microtek  issuable upon  exercise  of stock
       options under the Option Plan from 883,302 to 1,083,302 shares of  Common
       Stock; and
 
    3.   To transact any other business  as may properly come before the meeting
       or any adjournment thereof.
 
    Stockholders of record  at the  close of  business on            , 1996  are
entitled to notice of and to vote at the meeting or any adjournment thereof.
 
    WHETHER  OR NOT YOU PLAN TO ATTEND THIS MEETING, PLEASE MARK, SIGN, DATE AND
RETURN THE ENCLOSED PROXY CARD AS  PROMPTLY AS POSSIBLE IN THE ENCLOSED  POSTAGE
PAID ENVELOPE.
 
                                          By Order of the Board of Directors
                                          Dan Lee
                                          SECRETARY
 
Columbus, Mississippi
       , 1996
<PAGE>
                                                                PRELIMINARY COPY
 
                                      [B]
                             ISOLYSER COMPANY, INC.
 
                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                                 TO BE HELD ON
                                        , 1996
 
To the Shareholders:
 
    Notice  is  hereby  given that  a  Special  Meeting of  the  Shareholders of
Isolyser Company,  Inc., a  Georgia corporation  ("Isolyser"), will  be held  on
       , 1996, beginning at 10:00 a.m. local time, at Isolyser's offices at 4320
International  Boulevard,  N.W.,  Norcross,  Georgia  30093  (together  with any
adjournments or postponements thereof, the "Special Meeting"), for the following
purposes, all as set forth in the attached Joint Proxy Statement/Prospectus:
 
    1.  To consider and  vote upon a proposal to  approve the issuance of up  to
       8,758,720  shares of Isolyser common stock, $.001 par value per share, in
       connection with the merger (the "Merger") of a wholly-owned subsidiary of
       Isolyser with and into Microtek Medical, Inc. ("Microtek") in  accordance
       with  that certain Agreement and Plan  of Merger (the "Merger Agreement")
       dated as of March 15, 1996 and amended as of June 23, 1996, by and  among
       Microtek, Isolyser and MMI Merger Corp. (the "Isolyser Subsidiary"). As a
       result  of the Merger, Microtek will  become a wholly-owned subsidiary of
       Isolyser, and each share of Microtek common stock will be converted  into
       the right to receive such number of shares of Isolyser common stock equal
       to  $16.50 divided by the "Determination Price" (as defined in the Merger
       Agreement).
 
    2.  To transact any other business  as may properly come before the  meeting
       or any adjournment thereof. No other business is expected to be addressed
       at the meeting.
 
    Shareholders  of record  at the  close of  business on            , 1996 are
entitled to notice of and to vote at the meeting and any adjournment thereof.
 
    Shareholders are cordially invited to attend the meeting in person. However,
whether or not you expect to attend, we urge you to read the accompanying  Joint
Proxy Statement/Prospectus and then complete, sign, date and return the enclosed
proxy  card in the enclosed postage pre-paid envelope. It is important that your
shares be represented  at the  meeting, and your  promptness will  assist us  to
prepare  for the meeting  and to avoid the  cost of a  follow-up mailing. If you
receive more than one proxy card because you own shares registered in  different
names  or  at  different addresses,  each  proxy  card should  be  completed and
returned.
 
                                          By order of the Board of Directors,
 
                                          Travis W. Honeycutt,
                                          SECRETARY
 
Norcross, Georgia
       , 1996
<PAGE>
INFORMATION  CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.   A
REGISTRATION  STATEMENT RELATING  TO THESE  SECURITIES HAS  BEEN FILED  WITH THE
SECURITIES AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR  MAY
OFFERS  TO BUY BE ACCEPTED PRIOR TO  THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR  THE
SOLICITATION  OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER,  SOLICITATION OR SALE WOULD BE UNLAWFUL  PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
                                                                PRELIMINARY COPY
 
JOINT PROXY STATEMENT/PROSPECTUS
 
                             JOINT PROXY STATEMENT
                             ISOLYSER COMPANY, INC.
                             MICROTEK MEDICAL, INC.
                SPECIAL MEETING OF STOCKHOLDERS OF MICROTEK AND
                         SHAREHOLDERS OF ISOLYSER TO BE
                             HELD ON         , 1996
                            ------------------------
                                   PROSPECTUS
                             ISOLYSER COMPANY, INC.
                                  COMMON STOCK
                            ------------------------
 
    This Joint Proxy Statement/Prospectus is being furnished to the shareholders
of  Isolyser Company,  Inc., a  Georgia corporation  ("Isolyser"), in connection
with the solicitation of proxies by the  Board of Directors of Isolyser for  use
at  the Special Meeting of Shareholders  of Isolyser (the "Isolyser Meeting") to
be held at 10:00  a.m., local time,  on          ,  1996, at 4320  International
Boulevard,  N.W., Norcross, Georgia 30093. At the Isolyser Meeting, the Isolyser
shareholders will be  asked to consider  and vote upon  a proposal (the  "Merger
Proposal")  to approve the issuance of up to 8,758,720 shares of Isolyser Common
Stock  in  connection  with  an  Agreement  and  Plan  of  Merger  (the  "Merger
Agreement")  dated as of March 15, 1996 and  amended as of June 23, 1996, by and
among Isolyser, MMI Merger Corp., a Delaware corporation and a newly  organized,
wholly-owned  subsidiary of  Isolyser (the "Isolyser  Subsidiary"), and Microtek
Medical, Inc., a Delaware corporation  ("Microtek"), pursuant to which  Microtek
will become a wholly-owned subsidiary of Isolyser.
 
    This   Joint  Proxy   Statement/Prospectus  is   also  being   furnished  to
stockholders of Microtek in connection with  the solicitation of proxies by  the
Board of Directors of Microtek for use at the Special Meeting of Stockholders of
Microtek  (the "Microtek  Meeting") to  be held  at 10:00  a.m., local  time, on
       , 1996,  at 512  Lehmberg Road,  Columbus, Mississippi.  At the  Microtek
Meeting, the Microtek stockholders will be asked to consider and vote upon (i) a
proposal  to  approve  and adopt  the  Merger  Agreement pursuant  to  which the
Isolyser Subsidiary will  be merged with  and into Microtek,  which will be  the
surviving  corporation, and  Microtek will  become a  wholly-owned subsidiary of
Isolyser, and  (ii) the  approval of  a proposed  amendment to  Microtek's  1990
Incentive Stock Option Plan (the "Option Plan") to increase the number of shares
of  Common Stock of Microtek  issuable upon exercise of  stock options under the
Option Plan from 883,302 to 1,083,302 shares of Common Stock.
 
    Under the Merger Agreement, Microtek  will become a wholly-owned  subsidiary
of Isolyser, and holders of each share of Microtek Common Stock will be entitled
to receive such number of shares of Isolyser Common Stock as are equal to $16.50
divided  by the "Determination Price" of  Isolyser Common Stock. Under the terms
of the Merger Agreement, the "Determination Price" will be equal to the  average
closing  price (but  in no event  lower than  $10.00 or greater  than $15.00) of
Isolyser Common Stock  as reported  on The Nasdaq  Stock Market  for the  twenty
trading  days immediately preceding the fifth trading day prior to the effective
date of the Merger (the "Effective Date").
 
    A  copy  of  the   Merger  Agreement  is  attached   to  this  Joint   Proxy
Statement/Prospectus  as Annex  A and is  incorporated herein  by reference. All
capitalized  terms  not  otherwise  defined  in  this  Joint  Proxy   Statement/
Prospectus shall have the meanings given to such terms in the Merger Agreement.
 
    Under   the   rules  of   the  Securities   and  Exchange   Commission  (the
"Commission"), the solicitation of proxies from the stockholders of Microtek  to
approve  and adopt the Merger Agreement  constitutes an offering to stockholders
of  Microtek  of  shares  of  Isolyser  Common  Stock.  Isolyser  has  filed   a
registration  statement  on  Form S-4  (File  No. 333-3436)  (together  with any
amendments thereto, the "Registration  Statement") with the Commission  relating
to   such   offering.   All   information   contained   in   this   Joint  Proxy
Statement/Prospectus relating to Isolyser and  the Isolyser Subsidiary has  been
supplied  by Isolyser and all information relating to Microtek has been supplied
by Microtek.
 
    The  principal  executive   offices  of   Isolyser  are   located  at   4320
International  Boulevard, Norcross,  Georgia 30093  and its  telephone number is
(770) 381-7566. The principal executive offices  of Microtek are located at  512
Lehmberg  Road, Columbus,  Mississippi 39702 and  its telephone  number is (601)
327-1863.
 
    This Joint Proxy Statement/Prospectus and the enclosed proxy card are  first
being mailed to stockholders of Microtek on or about        , 1996.
 
THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES AND
     EXCHANGE COMMISSION NOR  HAS THE COMMISSION  PASSED UPON THE  ACCURACY
         OR ADEQUACY OF THIS JOINT PROXY STATEMENT/PROSPECTUS. ANY
               REPRESENTATION   TO  THE  CONTRARY  IS  A  CRIMINAL
                                    OFFENSE.
                            ------------------------
 
       THE DATE OF THIS JOINT PROXY STATEMENT/PROSPECTUS IS       , 1996.
<PAGE>
                             AVAILABLE INFORMATION
 
    This  Joint  Proxy  Statement/Prospectus  does   not  contain  all  of   the
information  set forth in the Registration  Statement and exhibits thereto which
Isolyser has filed  with the  Commission under the  Securities Act  of 1933,  as
amended (the "Securities Act"). As permitted by the rules and regulations of the
Commission,  this  Joint Proxy  Statement/Prospectus omits  certain information,
exhibits and undertakings contained in the Registration Statement. Reference  is
made  to  the Registration  Statement and  to the  exhibits thereto  for further
information, which  may  be  inspected  without charge  at  the  office  of  the
Commission  at 450 Fifth Street, Washington, D.C. 20549, and copies of which may
be obtained from  the Commission  at prescribed rates.  Statements contained  in
this  Joint Proxy Statement/Prospectus relating to  the contents of any contract
or other document referred  to herein or therein  are not necessarily  complete,
and in each instance, reference is made to the copy of such document filed as an
exhibit  to the Registration Statement. Each  such statement is qualified in its
entirety by such reference.
 
    In addition, both Isolyser (File No. 0-24866) and Microtek (File No.0-20346)
are subject to the informational requirements of the Securities Exchange Act  of
1934, as amended (the "Exchange Act"), and in accordance therewith file reports,
proxy  statements and other information with the Commission. Such reports, proxy
statements and other information filed with the Commission can be inspected  and
copied  at the public reference facilities  maintained by the Commission at Room
1024, 450 Fifth Street, N.W., Washington, D.C. 20549 or at the Regional  Offices
of  the Commission which are located as follows: Northwestern Atrium Center, 500
West Madison Street, Suite 1400, Chicago,  Illinois 60661 and Seven World  Trade
Center,  13th Floor, New York, New York  10048. Copies of such material can also
be obtained from the Commission at  prescribed rates. Written requests for  such
material  should be  addressed to the  Public Reference  Section, Securities and
Exchange Commission, 450 Fifth Street, N.W., Washington, D.C. 20549.
 
               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
 
    THIS JOINT PROXY  STATEMENT/PROSPECTUS INCORPORATES  BY REFERENCE  DOCUMENTS
RELATING  TO ISOLYSER AND  MICROTEK. DOCUMENTS RELATING  TO ISOLYSER (OTHER THAN
EXHIBITS TO SUCH  DOCUMENTS UNLESS SUCH  EXHIBITS ARE SPECIFICALLY  INCORPORATED
HEREIN  BY  REFERENCE) ARE  AVAILABLE TO  ANY  PERSON, INCLUDING  ANY BENEFICIAL
OWNER, TO WHOM THIS JOINT PROXY STATEMENT/PROSPECTUS IS DELIVERED, ON WRITTEN OR
ORAL REQUEST, WITHOUT  CHARGE, FROM ISOLYSER  COMPANY, INC., 4320  INTERNATIONAL
BOULEVARD, NORCROSS, GEORGIA ATTENTION: C. FRED HARLOW, CHIEF FINANCIAL OFFICER,
TELEPHONE (770) 381-7566. DOCUMENTS RELATING TO MICROTEK (OTHER THAN EXHIBITS TO
SUCH  DOCUMENTS UNLESS  SUCH EXHIBITS  ARE SPECIFICALLY  INCORPORATED THEREIN BY
REFERENCE) ARE AVAILABLE TO ANY PERSON, INCLUDING ANY BENEFICIAL OWNER, TO  WHOM
THIS  JOINT PROXY STATEMENT/PROSPECTUS IS DELIVERED, ON WRITTEN OR ORAL REQUEST,
WITHOUT CHARGE,  FROM  MICROTEK  MEDICAL, INC.,  512  LEHMBERG  ROAD,  COLUMBUS,
MISSISSIPPI 39702, ATTENTION: DAN LEE, CHIEF FINANCIAL OFFICER, TELEPHONE: (601)
327-1863.  IN ORDER TO ENSURE TIMELY DELIVERY OF THE DOCUMENTS, ANY SUCH REQUEST
SHOULD BE MADE BY       , 1996. COPIES OF DOCUMENTS SO REQUESTED WILL BE SENT BY
FIRST CLASS MAIL, POSTAGE PAID  WITHIN ONE BUSINESS DAY  OF THE RECEIPT OF  SUCH
REQUEST.
 
    The following Isolyser documents are incorporated by reference herein:
 
        A.   Annual  Report on Form  10-K for  the year ended  December 31, 1995
    filed with the Commission on April 1, 1996.
 
        B.  Quarterly Report on Form 10-Q  for the quarter ended March 31,  1996
    filed with the Commission on May 15, 1996.
 
        C.   Current Report  on Form 8-K  filed with the  Commission on June 15,
    1995, as amended by Current Report  on Form 8-K/A filed with the  Commission
    on July 17, 1995.
 
        D.   Current Report on Form 8-K  filed with the Commission on October 3,
    1995.
 
                                       2
<PAGE>
        E.  The  description of Isolyser  Common Stock set  forth in  Isolyser's
    Registration Statement filed pursuant to Section 12 of the Exchange Act, and
    any amendment or report filed for the purpose of updating such description.
 
    The following Microtek documents are incorporated by reference herein:
 
        1.   Annual Report on Form 10-K for the year ended November 30, 1995, as
    amended and  restated  by  Annual  Report on  Form  10-K/A  filed  with  the
    Commission on May 23, 1996 (as so amended, the "1995 Microtek 10-K").
 
        2.   Quarterly Report  on Form 10-Q  for the quarter  ended February 29,
    1996 filed with the Commission on April 12, 1996 (the "Microtek 10-Q").
 
        3.  Current  Report on Form  8-K filed  with the Commission  on May  15,
    1996.
 
        All documents filed by Isolyser or Microtek with the Commission pursuant
    to  Sections 13(a), 13(c),  14 or 15(d)  of the Exchange  Act after the date
    hereof and  prior to  the date  of  the Isolyser  Meeting and  the  Microtek
    Meeting  shall be deemed to be incorporated by reference herein and shall be
    a part hereof  from the  date of filing  of such  documents. Any  statements
    contained  in a  document incorporated by  reference herein  or contained in
    this Joint  Proxy Statement/Prospectus  shall be  deemed to  be modified  or
    superseded  for purposes  hereof to  the extent  that a  statement contained
    herein  (or  in  any  other  subsequently  filed  document  which  also   is
    incorporated by reference herein) modifies or supersedes such statement. Any
    statement so modified or superseded shall not be deemed to constitute a part
    hereof except as so modified or superseded.
 
                            ------------------------
 
    The  1995 Microtek 10-K  and the Microtek 10-Q  are delivered in conjunction
with this Joint Proxy Statement/Prospectus.
 
    NO PERSON  HAS  BEEN AUTHORIZED  TO  GIVE ANY  INFORMATION  OR TO  MAKE  ANY
REPRESENTATION  NOT  CONTAINED  IN  THIS  JOINT  PROXY  STATEMENT/PROSPECTUS  IN
CONNECTION WITH THE OFFERS MADE HEREBY, AND, IF GIVEN OR MADE, SUCH  INFORMATION
OR  REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY ISOLYSER
OR MICROTEK. THIS JOINT PROXY STATEMENT/PROSPECTUS DOES NOT CONSTITUTE AN  OFFER
TO  SELL OR A SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THOSE TO
WHICH IT RELATES OR AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY OF
THE SECURITIES OFFERED HEREBY TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE  SUCH
OFFER  IN SUCH PERSON'S  JURISDICTION. NEITHER THE DELIVERY  OF THIS JOINT PROXY
STATEMENT/PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES,
CREATE  AN   IMPLICATION   THAT,   SINCE   THE  DATE   OF   THIS   JOINT   PROXY
STATEMENT/PROSPECTUS,  THERE HAS  BEEN NO CHANGE  IN THE AFFAIRS  OF ISOLYSER OR
MICROTEK.
 
                                       3
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
Available Information......................................................................................          2
Incorporation of Certain Information by Reference..........................................................          2
Summary of Joint Proxy Statement/Prospectus................................................................          5
The Meetings...............................................................................................         16
The Merger.................................................................................................         17
Isolyser and Microtek Pro Forma Combined Financial Information.............................................         41
Isolyser Pro Forma Combined Financial Information..........................................................         48
Microtek Pro Forma Combined Financial Information..........................................................         50
Comparative Rights of Isolyser Shareholders and Microtek Stockholders......................................         55
Option Proposal............................................................................................         62
Legal Matters..............................................................................................         65
Experts....................................................................................................         65
Stockholder's Proposals....................................................................................         65
Annex A Agreement and Plan of Merger.......................................................................        A-1
Annex B Opinion of Morgan Keegan & Company, Inc............................................................        B-1
Annex C Opinion of Goldman, Sachs & Co.....................................................................        C-1
</TABLE>
 
                                       4
<PAGE>
                  SUMMARY OF JOINT PROXY STATEMENT/PROSPECTUS
 
    THE  FOLLOWING IS  A SUMMARY OF  CERTAIN INFORMATION  CONTAINED ELSEWHERE IN
THIS JOINT PROXY STATEMENT/PROSPECTUS. THE SUMMARY IS NECESSARILY INCOMPLETE AND
SELECTIVE AND IS  QUALIFIED IN  ITS ENTIRETY  BY THE  MORE DETAILED  INFORMATION
CONTAINED  IN  THIS  JOINT  PROXY  STATEMENT/PROSPECTUS,  INCLUDING  THE ANNEXES
HERETO. THE  TERMS  "MICROTEK" AND  "ISOLYSER"  REFER RESPECTIVELY  TO  MICROTEK
MEDICAL,   INC.  AND  ITS  SUBSIDIARIES  AND  ISOLYSER  COMPANY,  INC.  AND  ITS
SUBSIDIARIES, UNLESS THE CONTEXT OTHERWISE REQUIRES.
 
                                    GENERAL
 
    This Joint Proxy  Statement/Prospectus relates to  the proposed merger  (the
"Merger")  of  MMI  Merger Corp.,  a  wholly-owned subsidiary  of  Isolyser (the
"Isolyser Subsidiary"),  into Microtek  pursuant  to an  Agreement and  Plan  of
Merger  dated March  15, 1996 (the  "Original Merger Agreement"),  as amended on
June 23,  1996 (and  as  amended, the  "Merger  Agreeement"). Under  the  Merger
Agreement,  Microtek  will  become  a wholly-owned  subsidiary  of  Isolyser and
holders of each share of Microtek Common Stock will be entitled to receive  such
number  of shares of Isolyser Common Stock as are equal to $16.50 divided by the
"Determination Price" of Isolyser Common Stock (the "Exchange Ratio"). Under the
terms of the Merger  Agreement, the "Determination Price"  will be equal to  the
average closing price (but in no event lower than $10.00 or greater than $15.00)
per  share  of Isolyser  Common Stock  as  reported on  The Nasdaq  Stock Market
("Nasdaq") for the twenty days immediately preceding the fifth trading day prior
to the effective  date of  the Merger (the  "Average Closing  Price"). See  "The
Merger."  This  Joint  Proxy  Statement/Prospectus also  relates  to  a proposed
amendment (the "Option Proposal") to Microtek's 1990 Incentive Stock Option Plan
(the "Option  Plan") to  increase the  number of  shares Microtek  Common  Stock
issuable  upon exercise of stock  options under the Option  Plan from 883,302 to
1,083,302 shares. See "Option Proposal."
 
                                  THE PARTIES
 
    ISOLYSER.   Isolyser develops  and manufactures  OREX-Registered  Trademark-
Degradables-TM-,  a  series of  products made  from  a thermoplastic,  hot water
soluble polymer that can be configured into  an array of products such as  woven
and  non-woven fabrics, film and thermoformed and extruded items. These products
can  be  dissolved   after  use,   in  hot   water  in   a  specially   designed
OREX-Registered  Trademark- processor  similar to a  commercial washing machine,
for safe disposal through municipal  sewer systems. Isolyser believes that  this
line  of  products  provides  protection  to  the  hospital  staff,  patient and
environment while providing cost-effective solutions to the problems  associated
with waste reduction and disposal.
 
    MICROTEK.    Microtek  designs,  manufactures and  sells  a  broad  range of
surgical and medical supplies  for use in targeted  niche markets in the  health
care  industry.  Its principal  product lines  are  infection and  fluid control
products, including  disposable drapes  for  covering operating  room  equipment
during  surgical procedures  and pouches that  attach to the  surgical drapes to
collect and contain fluids during surgical procedures.
 
                                  THE MEETINGS
 
    ISOLYSER MEETING.  The Isolyser Meeting will be held on             ,  1996,
at  10:00  a.m., local  time, at  Isolyser's executive  offices located  at 4320
International Boulevard, N.W., Norcross, Georgia 30093. At the Isolyser Meeting,
the Isolyser shareholders  will be asked  to consider and  vote upon a  proposal
(the  "Merger Proposal") to  approve the issuance  of up to  8,758,720 shares of
Isolyser Common Stock in connection with the Merger.
 
    The close of business on              , 1996,  has been fixed as the  record
date  for the determination of Isolyser  shareholders entitled to receive notice
of and to  vote at the  Isolyser meeting. As  of the close  of business on  such
date, Isolyser had outstanding and entitled to vote           shares of Isolyser
Common Stock.
 
                                       5
<PAGE>
    A  majority of the outstanding shares of Isolyser Common Stock on the record
date must be represented in person or by proxy at the Isolyser Meeting in  order
to  constitute a quorum  for the transaction  of business. The  record holder of
each share of  Isolyser Common Stock  entitled to vote  at the Isolyser  Meeting
will  have  one vote  for each  share so  held. Abstentions  will be  treated as
Isolyser Common Stock present and entitled  to vote for purposes of  determining
the presence of a quorum. If a broker indicates on a proxy that it does not have
the  discretionary  authority as  to certain  Isolyser  Common Stock  (a "Broker
Non-Vote"), those shares  will be considered  in determining the  presence of  a
quorum  but will have no effect on  the Merger Proposal. The affirmative vote of
the holders of a majority of the  shares of Isolyser Common Stock voting at  the
Isolyser meeting is required to approve the proposal relating to the Merger.
 
    As  of             , 1996,  the directors and executive officers of Isolyser
owned of record  approximately       % of  the shares of  Isolyser Common  Stock
entitled  to vote at the  Isolyser Meeting. Of those  shares, Messrs. Taylor and
Honeycutt have  granted to  Microtek a  proxy to  vote all  of their  shares  of
Isolyser Common Stock in favor of the Merger Proposal representing approximately
   % of the Isolyser Common Stock outstanding on such date. See "The Meetings --
Isolyser Meeting".
 
    MICROTEK  MEETING.  The Microtek Meeting will be held on             , 1996,
at 10:00  a.m., local  time,  at Microtek's  executive  offices located  at  512
Lehmberg  Road,  Columbus,  Mississippi  39702.  At  the  Microtek  Meeting, the
Microtek stockholders will be asked to  consider and vote upon (i) the  approval
and  adoption  of the  Merger Agreement,  and  (ii) the  approval of  the Option
Proposal.
 
    The close of business on              , 1996,  has been fixed as the  record
date  for the determination of stockholders entitled to receive notice of and to
vote at the Microtek Meeting. As of the close of business on such date, Microtek
had outstanding and entitled to vote           shares of Microtek Common  Stock.
A majority of the outstanding shares of Microtek Common Stock on the record date
must  be represented in person  or by proxy at the  Microtek Meeting in order to
constitute a quorum for the transaction  of business. The record holder of  each
share  of Microtek Common  Stock entitled to  vote at the  Microtek Meeting will
have one vote for each  share so held. Abstentions  will be treated as  Microtek
Common  Stock  present and  entitled  to vote  for  purposes of  determining the
presence of a quorum. In the event  of any Broker Non-Votes with respect to  any
proposal,  such vote will be considered in  determining the presence of a quorum
but will have no effect  with respect to that  proposal. Approval of the  Merger
Agreement requires the affirmative vote of holders of the majority of the issued
and  outstanding Microtek Common Stock. The affirmative vote of the holders of a
majority of the shares represented at the Microtek Meeting will be required  for
the approval of the Option Proposal and any other proposals submitted for a vote
at the Microtek Meeting.
 
    Certain  stockholders of  Microtek who at  the record date  for the Microtek
Meeting collectively  owned approximately        % of  the outstanding  Microtek
Common  Stock have granted  Isolyser an irrevocable  proxy to vote  all of their
Microtek Common  Stock in  favor  of the  proposed  Merger. In  addition,  those
officers,  directors and affiliates of Microtek  who have not granted proxies to
Isolyser own of record approximately 2%  of the shares of Microtek Common  Stock
entitled  to  vote  at  the  Microtek Meeting.  See  "The  Meetings  -- Microtek
Meeting".
 
                                   THE MERGER
 
    GENERAL.  Pursuant to the proposed  Merger, the Isolyser Subsidiary will  be
merged  into Microtek,  and Microtek  will become  a wholly-owned  subsidiary of
Isolyser. Upon completion  of the Merger,  each share of  Microtek Common  Stock
will  be converted into the  right to receive such  number of shares of Isolyser
Common Stock as are  equal to $16.50 divided  by the "Determination Price."  The
Merger  Agreement defines the  "Determination Price" to be  equal to the average
closing price  per share  of the  Isolyser Common  Stock on  Nasdaq for  the  20
trading days immediately preceding the fifth trading day before the consummation
of  the Merger; provided, however, that the Determination Price may not be lower
than $10.00 or higher than $15.00. See "The Merger -- General."
 
                                       6
<PAGE>
    ISOLYSER'S REASONS FOR THE  MERGER AND RECOMMENDATION  OF ISOLYSER BOARD  OF
DIRECTORS.    Upon  consultation  with its  legal  and  financial  advisors, and
following consideration of a number of business issues and factors, the Board of
Directors of Isolyser has determined that the Merger is in the best interest  of
Isolyser. See "The Merger -- Isolyser's Reasons for the Merger" for a discussion
of  the factors considered by the Isolyser Board in reaching such determination.
The Isolyser Board has determined that the terms of the Merger Agreement,  which
were established through arms' length bargaining with Microtek, are fair to, and
in  the best  interests of,  Isolyser's shareholders.  ACCORDINGLY, THE ISOLYSER
BOARD HAS UNANIMOUSLY APPROVED THE  MERGER AGREEMENT AND UNANIMOUSLY  RECOMMENDS
THAT THE ISOLYSER SHAREHOLDERS VOTE FOR THE MERGER PROPOSAL.
 
    MICROTEK'S  REASONS FOR THE  MERGER AND RECOMMENDATION  OF MICROTEK BOARD OF
DIRECTORS.  In reaching its determination to recommend the Merger, the  Microtek
Board consulted with Microtek's management and its financial and legal advisors.
See "The Merger -- Microtek's Reasons for the Merger" regarding the factors that
the  Microtek Board considered in reaching  its decision. The Microtek Board has
determined that  the  terms of  the  Merger Agreement,  which  were  established
through  arms' length  bargaining with  Isolyser, are fair  to, and  in the best
interests of, Microtek and its stockholders. ACCORDINGLY, THE MICROTEK BOARD HAS
UNANIMOUSLY APPROVED THE  MERGER AGREEMENT AND  UNANIMOUSLY RECOMMENDS THAT  THE
MICROTEK STOCKHOLDERS VOTE FOR APPROVAL AND ADOPTION OF THE MERGER AGREEMENT.
 
    OPINION  OF ISOLYSER'S  FINANCIAL ADVISOR.   Morgan  Keegan &  Company, Inc.
("Morgan Keegan") has  delivered its written  opinion to the  Isolyser Board  of
Directors,  dated  June 21,  1996,  to the  effect that,  as  of such  date, the
Exchange Ratio pursuant to the Merger Agreement is fair, from a financial  point
of  view,  to the  shareholders of  Isolyser. A  copy of  the opinion  of Morgan
Keegan,  which  sets  forth  the   assumptions  made,  matters  considered   and
limitations   on   reviews  undertaken,   is  attached   to  this   Joint  Proxy
Statement/Prospectus as  Annex  B  and  is  incorporated  herein  by  reference.
Shareholders  of Isolyser  are urged  to, and should,  read such  opinion in its
entirety. See "The Merger -- Opinion of Isolyser's Financial Advisor."
 
    OPINION OF MICROTEK'S FINANCIAL ADVISOR.  On June 23, 1996, Goldman, Sachs &
Co. ("Goldman  Sachs")  delivered its  opinion  to  the Board  of  Directors  of
Microtek  that, as of the  date of such opinion,  the Exchange Ratio pursuant to
the Merger Agreement is fair to the holders of shares of Microtek Common  Stock.
The  full  text  of the  written  opinion  of Goldman  Sachs,  which  sets forth
assumptions made, matters considered and limitations on the review undertaken in
connection with the opinion, is attached  hereto as Annex C and is  incorporated
herein  by reference. HOLDERS OF  SHARES OF MICROTEK COMMON  STOCK ARE URGED TO,
AND SHOULD, READ SUCH  OPINION IN ITS  ENTIRETY. See "The  Merger -- Opinion  of
Microtek's Financial Advisor."
 
    RISK  FACTORS.  An investment in shares  of Isolyser Common Stock involves a
high degree of risk. Isolyser's future performance will depend to a  substantial
degree  upon  market  acceptance  of  and  Isolyser's  ability  to  successfully
manufacture, market, deliver and expand  its OREX Degradables line of  products.
Isolyser  only recently began to sell  OREX Degradables in material amounts, and
incurred operating and net losses for the years ended December 31, 1994 and 1995
and  the  three-month  period  ended  March  31,  1996.  Accordingly,   Microtek
stockholders  should carefully consider the risk factors beginning on page 16 of
Isolyser's Annual  Report on  Form 10-K  for the  year ended  December 31,  1995
incorporated  herein  by  reference  including,  without  limitation,  such risk
factors captioned  "Limited  Operating  History;  Net  Losses,"  "Risks  of  New
Products" and "Manufacturing and Supply Risks."
 
    EFFECTIVE  DATE OF THE MERGER.  It is currently contemplated that the Merger
will be  consummated as  soon as  practicable after  the Isolyser  and  Microtek
Meetings.  The Merger  will be  effective upon  the filing  of a  Certificate of
Merger with the Secretary of State of Delaware (the "Effective Date").
 
    EXCHANGE OF MICROTEK STOCK CERTIFICATES.   As soon as practicable after  the
Effective  Date, instructions and  a letter of transmittal  will be furnished to
all Microtek stockholders  for use  in exchanging their  stock certificates  for
certificates  evidencing  the  shares  of Isolyser  Common  Stock  they  will be
 
                                       7
<PAGE>
entitled to receive as a result  of the Merger. STOCKHOLDERS OF MICROTEK  SHOULD
NOT  SUBMIT THEIR  STOCK CERTIFICATES FOR  EXCHANGE UNTIL  SUCH INSTRUCTIONS AND
LETTER OF TRANSMITTAL ARE RECEIVED. See "The Merger -- Exchange of  Certificates
Representing Microtek Shares."
 
    OPERATIONS  OF MICROTEK  AFTER THE MERGER.   Following  the Merger, Microtek
will be  operated as  a  wholly-owned subsidiary  of  Isolyser. Although  it  is
anticipated that the current executive officers of Microtek will continue as the
executive  officers of Microtek following the  consummation of the Merger, it is
not anticipated that  employment agreements  will be entered  into between  such
executive  officers, on  the one  hand, and either  Microtek or  Isolyser on the
other. See "The Merger -- Interests of Certain Persons in the Merger."
 
    NO SOLICITATION.   The  Merger Agreement  provides that  Microtek will  not,
directly  or indirectly, (i) solicit or  initiate discussions with or (ii) enter
into any negotiations or agreements with, or furnish any information that is not
publicly available to,  any third party  concerning any proposal  for a  merger,
sale  of substantial  assets, sale  of shares  of stock  or securities  or other
takeover or  business  combination transaction  (collectively,  an  "Acquisition
Proposal"),  subject to  the fiduciary  duties of  the Microtek  Board. See "The
Merger -- Certain Covenants."
 
    NO APPRAISAL  RIGHTS.   Microtek  stockholders will  not have  appraisal  or
dissenters' rights with respect to the Merger.
 
    CERTAIN  FEDERAL INCOME TAX CONSEQUENCES.  Neither Microtek nor Isolyser has
requested, nor will they  receive, an advance ruling  from the Internal  Revenue
Service  as to the tax consequences of the Merger. As contemplated by the Merger
Agreement, it is  a condition  to the  closing of  the Merger  that counsel  for
Isolyser  deliver an opinion, subject  to certain qualifications and conditions,
with respect to certain federal income tax consequences of the Merger  including
(i)  that  the Merger  will constitute  a reorganization  within the  meaning of
Section 368(a) of the  Internal Revenue Code of  1986, as amended (the  "Code"),
and  (ii) that no gain or loss will be recognized by a Microtek stockholder as a
result of the Merger with respect  to shares of Microtek Common Stock  converted
solely  into  Isolyser  Common  Stock.  All  Microtek  stockholders  should read
carefully  the  discussion  in  "The  Merger  --  Certain  Federal  Income   Tax
Consequences"  and other sections of this Joint Proxy Statement/Prospectus. They
are urged to consult their own tax  advisors as to the specific consequences  to
them  of the  Merger under  federal, state, local  and any  other applicable tax
laws. See "The Merger -- Certain Federal Income Tax Consequences."
 
    ACCOUNTING TREATMENT.  It is a condition to the Merger that it shall qualify
as a pooling-of-interests for accounting  and financial reporting purposes.  See
"The Merger -- Accounting Treatment."
 
    CONDITIONS  OF THE MERGER.   In addition to approval  by the stockholders of
Isolyser and Microtek, consummation of the Merger is subject to the satisfaction
or waiver of  a number of  conditions and to  certain regulatory matters.  Other
than  approval  of the  Merger  by the  Isolyser  shareholders and  the Microtek
stockholders, substantially all of the conditions  to the Merger may be  waived,
in  whole or in part,  by the parties for whose  benefit they have been created,
without the approval of their  respective stockholders. However, after  approval
by  the stockholders of Isolyser and  Microtek, no amendment or modification may
be made which by law requires further approval by such stockholders unless  such
approval  is obtained.  In addition, the  Merger may be  abandoned under certain
circumstances, and such abandonment will  not require stockholder approval.  See
"The Merger -- Conditions to the Merger," "-- Amendment of the Merger Agreement;
Waiver of Conditions" and "-- Certain Regulatory Matters."
 
    TERMINATION.    The  Merger  Agreement  may  be  terminated  and  the Merger
abandoned, at any time prior to the Effective Date, whether before or after  the
approval  by the Isolyser or Microtek stockholders, (i) by the mutual consent of
Isolyser  and  Microtek;  (ii)  by  Isolyser  if  there  has  been  a   material
misrepresentation or breach of warranty in the representations and warranties of
Microtek  made in the Merger Agreement, or  there has been a material failure by
Microtek to comply with its
 
                                       8
<PAGE>
obligations under the Merger Agreement, subject to certain exceptions; (iii)  by
Microtek if there has been a material misrepresentation or breach of warranty in
the  representations and warranties of Isolyser made in the Merger Agreement, or
there has been  a material failure  by Isolyser to  comply with its  obligations
under  the  Merger  Agreement, subject  to  certain exceptions;  (iv)  by either
Isolyser or Microtek if all conditions to that party's obligation to  consummate
the  Merger have not been satisfied or waived by September 30, 1996, unless such
failure of  consummation is  due to  the  failure of  the terminating  party  to
perform  or observe the covenants, agreements, and conditions to be performed or
observed by it; (v) by  either Isolyser or Microtek  if the consummation of  the
Merger  would violate any  nonappealable final order, decree  or judgment of any
court or  governmental body  or agency  having competent  jurisdiction; (vi)  by
Microtek if in the exercise of the good faith judgment of its Board of Directors
(which  judgment is based upon the advice of independent, outside legal counsel)
as to its fiduciary duties to  its stockholders such termination is required  by
reason  of an Acquisition Proposal; (vii) by  Isolyser, if the Microtek Board of
Directors withdraws or materially modifies or changes its recommendation to  the
stockholders  of Microtek  to approve  the Merger  Agreement and  the Merger; or
(viii) by either  Isolyser or Microtek,  if the Average  Closing Price is  below
$10.00  per share. See "The  Merger -- Termination of  Merger Agreement" and "--
Amendment of the Merger Agreement; Waiver of Conditions."
 
    TERMINATION FEE.  Whether  or not the Merger  is consummated, all costs  and
expenses  incurred in connection with the  Merger Agreement and the transactions
contemplated thereby will be paid by the party incurring such costs or expenses.
Notwithstanding the foregoing, if (a)  Microtek terminates the Merger  Agreement
because  its Board  of Directors,  in the  exercise of  its good  faith judgment
(based upon advice of independent, outside  counsel) as to its fiduciary  duties
to  its stockholders  determines such  termination is  required by  reason of an
Acquisition Proposal; (b) the Merger Agreement is terminated by Isolyser because
the Microtek Board of Directors withdraws or materially modifies or changes  its
recommendation  to the stockholders of Microtek  to approve the Merger Agreement
and the Merger;  or (c) on  or before September  30, 1996 and  while the  Merger
Agreement  remains in effect,  Microtek enters into  a definitive agreement with
respect to an Acquisition Proposal with any corporation, partnership, person  or
other  entity or group (other  than Isolyser or any  affiliate of Isolyser), and
such transaction (including any revised  transaction based upon the  Acquisition
Proposal)  is  thereafter consummated  (whether  before or  after  September 30,
1996), then Microtek  shall pay  to Isolyser  a fee  of $2.5  million. See  "The
Merger -- Fees and Expenses."
 
    COMPARATIVE RIGHTS OF ISOLYSER SHAREHOLDERS AND MICROTEK
STOCKHOLDERS.   Isolyser is incorporated under the  laws of the State of Georgia
and  Microtek  is  incorporated  under  the  laws  of  the  State  of  Delaware.
Stockholders of Microtek will, upon consummation of the Merger and to the extent
they  receive Isolyser Common Stock, become  stockholders of Isolyser, and their
rights as  such will  be governed  by  Georgia law  and Isolyser's  Articles  of
Incorporation  and Bylaws. See "Comparative  Rights of Isolyser Shareholders and
Microtek Stockholders."
 
                              THE OPTION PROPOSAL
 
    GENERAL.   The Board  of  Directors of  Microtek  has approved,  subject  to
stockholder approval by the Microtek stockholders, the increase of the number of
shares  of Microtek Common Stock subject to  the Option Plan from 883,302 shares
to 1,083,302 shares, in  order that the Option  Plan will have enough  available
shares  to cover option  grants made by  the Board of  Directors in November and
December 1995, which option grants exceeded the number of then authorized shares
available for grant pursuant  to the Option  Plan and were  made subject to  and
contingent upon stockholder approval. If the Merger Agreement is approved by the
Microtek  stockholders and the Merger is consummated, no additional options will
be granted under the  Option Plan. In addition,  the Merger Agreement  prohibits
the  further  grant of  options by  Microtek  prior to  the Merger.  See "Option
Proposal."
 
    VOTE REQUIRED FOR OPTION PROPOSAL.  The affirmative vote of the holders of a
majority of  the shares  of Microtek  Common Stock  represented at  the  Special
Meeting  will be required for  the approval of the  Option Proposal. See "Option
Proposal."
 
                                       9
<PAGE>
        SUMMARY HISTORICAL AND PRO FORMA SELECTED FINANCIAL INFORMATION
 
    The  following  tables  set   forth  (i)  selected  consolidated   financial
information  for Isolyser  for and as  of each of  the five years  in the period
ended December 31,  1995, and the  three-month period ended  March 31, 1995  and
1996, (ii) selected financial information for Microtek for and as of each of the
five  years in the  period ended November  30, 1995, and  the three-month period
ended February 28, 1995 and February 29, 1996, and (iii) selected unaudited  pro
forma  combined information  giving effect  to the  Merger under  the pooling of
interests method  of  accounting.  The selected  unaudited  pro  forma  combined
balance  sheet information as  of March 31,  1996 gives effect  to the Merger as
though it had been  consummated on that date.  The selected unaudited pro  forma
combined  balance sheet information  as of March  31, 1996 also  gives effect to
Microtek's acquisition  of Venodyne  a division  of Advanced  Instruments,  Inc.
("Venodyne")  on April 27, 1996  as if such acquisition  had ocurred on February
29, 1996. The  selected unaudited  pro forma combined  statements of  operations
information  for  the years  ended  December 31,  1993,  1994 and  1995  and the
three-month period ended March 31, 1996, gives effect to the Merger as if it had
occurred at the  beginning of the  earliest year presented.  For the year  ended
December  31, 1995,  the selected  unaudited pro  forma statement  of operations
information  also  gives   effect  to  Isolyser's   acquisitions  of   SafeWaste
Corporation  ("SafeWaste") on  May 31,  1995 and  White Knight  Healthcare, Inc.
("White Knight")  effective  September 1,  1995  and Microtek's  acquisition  of
Medi-Plast International, Inc. ("Medi-Plast") on November 30, 1995, and Venodyne
on  April 27,  1996 as  if such  acquisitions had  occurred at  the beginning of
Isolyser's and Microtek's fiscal  years, January 1, 1995  and December 1,  1994,
respectively.  For the three-months ended March 31, 1996, the selected unaudited
pro forma statement of  operations information also  gives effect to  Microtek's
acquisition of Venodyne as if such acquisition had occurred at December 1, 1994.
For  purposes of this selected unaudited  pro forma combined financial statement
information, the balance sheet and statements of operations information  combine
Microtek's  balance  sheet  as  of  February  29,  1996  and  its  statements of
operations for  the  years ended  November  30, 1993,  1994  and 1995,  and  the
three-month  period ended February 29,  1996, respectively, as Microtek's fiscal
year ends on November 30.
 
    The selected pro forma combined information is not necessarily indicative of
the operating results and financial position  that would have been reported  had
the Merger and the SafeWaste, White Knight, Medi-Plast and Venodyne acquisitions
occurred  at the pro forma dates specified,  nor is it necessarily indicative of
future results.
 
    The selected information set forth below should be read in conjunction  with
(i) the pro forma combined financial information included elsewhere herein, (ii)
the  historical consolidated  financial statements  and notes  thereto and other
financial information  included in  Isolyser's  and Microtek's  separate  Annual
Reports  on Form  10-K for the  years ended  December 31, 1995  and November 30,
1995, respectively,  and Quarterly  Reports on  Form 10-Q  for the  three-months
ended  March  31,  1996 and  February  29, 1996,  respectively,  incorporated by
reference herein, (iii)  the historical  financial statements  of SafeWaste  and
White  Knight included in Isolyser's Current Reports  on Form 8-K filed with the
Commission on June 15, 1995 and  October 3, 1995, respectively, incorporated  by
reference  herein and (iv) the historical financial statements of Medi-Plast and
Venodyne included in Microtek's  Annual Report on Form  10-K for the year  ended
November 30, 1995 incorporated by reference herein.
 
                                       10
<PAGE>
                             ISOLYSER -- HISTORICAL
 
<TABLE>
<CAPTION>
                                                                                                    THREE MONTHS
                                                        YEAR ENDED DECEMBER 31,                   ENDED MARCH 31,
                                         -----------------------------------------------------  --------------------
                                           1991       1992       1993       1994       1995       1995       1996
                                         ---------  ---------  ---------  ---------  ---------  ---------  ---------
                                                            (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                      <C>        <C>        <C>        <C>        <C>        <C>        <C>
STATEMENT OF OPERATIONS DATA:
  Net sales............................  $   2,587  $   5,502  $  11,831  $  46,625  $  75,414  $  12,155  $  31,008
  Gross profit.........................      1,264      3,001      4,860     11,508     16,138      2,625      7,128
  Income (loss) from operations........         88        513        261     (2,329)    (5,523)    (1,204)      (988)
  Income (loss) before extraordinary
   item and cumulative effect of change
   in accounting principle (1).........        162        532        636     (1,919)    (2,851)      (146)      (377)
  Net income (loss)....................        266        748        636     (1,862)    (2,851)      (146)      (377)
  Income (loss) per common and common
   equivalent share:
    Income (loss) before extraordinary
     item and cumulative effect of
     change in accounting principle....       0.01       0.04       0.04      (0.11)     (0.11)     (0.01)     (0.01)
    Net income (loss)..................       0.02       0.06       0.04      (0.10)     (0.11)     (0.01)     (0.01)
  Weighted average number of common and
   common equivalent shares
   outstanding.........................     12,162     13,486     16,053     18,684     25,575     24,468     30,500
BALANCE SHEET DATA:
  Working capital......................  $   4,935  $   6,656  $  24,461  $  80,743  $  90,766  $  79,613  $  88,634
  Total assets.........................      5,263      8,058     47,911    105,985    208,712    116,447    208,155
  Long-term debt.......................                                       6,732      9,821     16,481      9,899
  Redeemable common stock..............                           26,150      1,717
  Total shareholders' equity...........      5,047      7,419     11,281     90,779    174,179     92,073    174,407
</TABLE>
 
- ------------------------
(1)   Isolyser  recognized  extraordinary  benefits   from  net  operating  loss
    carryforwards of $104,000 and $216,000  in 1991 and 1992, respectively,  and
    recognized  a $57,000 cumulative effect benefit in 1994 from the adoption on
    January 1, 1994 of Statement of Financial Accounting Standards ("SFAS")  No.
    115, "Accounting for Certain Investments in Debt and Equity Securities".
 
                                       11
<PAGE>
                             MICROTEK -- HISTORICAL
 
<TABLE>
<CAPTION>
                                                                                                THREE        THREE
                                                                                               MONTHS       MONTHS
                                                                                                ENDED        ENDED
                                                     YEAR ENDED NOVEMBER 30,                  FEBRUARY     FEBRUARY
                                      -----------------------------------------------------      28,          29,
                                        1991       1992       1993       1994       1995        1995         1996
                                      ---------  ---------  ---------  ---------  ---------  -----------  -----------
                                                           (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                   <C>        <C>        <C>        <C>        <C>        <C>          <C>
STATEMENT OF OPERATIONS DATA:
  Net sales.........................  $  20,416  $  25,753  $  26,939  $  26,894  $  30,059   $   7,107    $   9,067
  Gross profit......................     10,398     13,442     13,072     11,947     13,783       2,877        4,352
  Income from operations............      1,171      3,705      2,108      1,402      4,385         677        1,587
  Income (loss) before extraordinary
   items and cumulative effect of
   change in accounting principle
   (1)..............................       (654)     1,287      1,007        585      2,308         337          730
  Net income (loss).................     (1,472)       775      1,031        580      2,308         337          730
  Income (loss) per common and
   common equivalent share:
    Income (loss) before
     extraordinary item and
     cumulative effect of change in
     accounting principle...........      (0.46)      0.28       0.20       0.11       0.47        0.07         0.15
    Net income (loss)...............      (0.87)      0.15       0.20       0.11       0.47        0.07         0.15
  Weighted average number of common
   and common equivalent shares
   outstanding......................      2,016      3,827      5,059      5,058      4,927       5,036        4,991
 
BALANCE SHEET DATA:
  Working capital...................  $   4,335  $   7,829  $  10,784  $   7,784  $  10,283   $   7,695    $  12,905
  Total assets......................     22,634     23,114     27,084     26,988     45,227      26,581       46,659
  Long-term debt....................     14,044      2,958      4,436         47     16,591          62       18,209
  Redeemable preferred stock........      2,279
  Total stockholders' equity........      2,580     17,749     19,117     19,883     21,119      20,220       21,862
</TABLE>
 
- ------------------------
(1) Microtek  recognized  extraordinary  charges from  the  early  retirement of
    long-term debt of $817,000 and $741,000  in 1991 and 1992 respectively,  and
    extraordinary benefits from net operating loss carryforwards of $229,000 and
    $24,000  in  1992  and  1993,  respectively.  Microtek  recognized  a $5,000
    cumulative effect charge in  1994 from the adoption  on December 1, 1993  of
    SFAS No. 109, "Accounting for Income Taxes".
 
                                       12
<PAGE>
                  ISOLYSER/MICROTEK -- PRO FORMA COMBINED (1)
 
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER 31,         THREE MONTHS
                                                             ---------------------------------  ENDED MARCH 31,
                                                               1993       1994        1995            1996
                                                             ---------  ---------  -----------  ----------------
                                                                    (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                          <C>        <C>        <C>          <C>
STATEMENT OF OPERATIONS DATA:
  Net sales................................................  $  38,769  $  73,383  $   151,744    $     41,053
  Gross profit.............................................     17,932     23,455       45,398          12,156
  Income (loss) from operations............................      2,369       (927)         942             567
  Income (loss) before extraordinary item and cumulative
   effect of change in accounting principle................      1,643       (720)      (1,179)            353
  Income (loss) before extraordinary item and cumulative
   effect of change in accounting principle per common and
   common equivalent share.................................       0.07      (0.03)       (0.04)           0.01
  Weighted average number of common and common equivalent
   shares outstanding......................................     22,731     25,361       32,388          37,088
BALANCE SHEET DATA:
  Working capital..........................................                                       $     99,552
  Total assets.............................................                                            260,703
  Long-term debt...........................................                                             33,858
  Total shareholders' equity...............................                                            193,272
</TABLE>
 
- ------------------------
(1)  The selected unaudited  pro forma combined  financial statement information
    gives effect to  the Merger of  Isolyser and Microtek  under the pooling  of
    interests  method of accounting.  The selected unaudited  pro forma combined
    statement of operations  information for  the year ended  December 31,  1995
    also  gives effect to  Isolyser's acquisitions of SafeWaste  on May 31, 1995
    and White Knight effective September  1, 1995 and Microtek's acquisition  of
    Medi-Plast  on November 30, 1995  and Venodyne on April  27, 1996 as if such
    acquisitions had  occurred at  the beginning  of Isolyser's  and  Microtek's
    fiscal  years, January 1,  1995 and December 1,  1994, respectively. For the
    three-months  ended  March  31,  1996,  the  selected  unaudited  pro  forma
    statement   of  operations  information  also  gives  effect  to  Microtek's
    acquisition of Venodyne as if such  acquisition had occurred at December  1,
    1994. The selected unaudited pro forma combined balance sheet information as
    of March 31, 1996 also gives effect to Microtek's acquisition of Venodyne on
    April 27, 1996 as if such acquisition had occurred on February 29, 1996. For
    purposes  of this selected unaudited  pro forma combined financial statement
    information, the  balance  sheet  and statement  of  operations  information
    combine  Microtek's balance sheet as of February 29, 1996 and its statements
    of operations for the years ended November 30, 1993, 1994 and 1995, and  the
    three  month  period ended  February 29,  1996, respectively,  as Microtek's
    fiscal year ends on November 30.
 
   Pro forma per share amounts  are based on an  assumed Exchange Ratio of  1.32
    shares of Isolyser Common Stock for each share of Microtek Common Stock. The
    selected  unaudited  combined balance  sheet information  reflects estimated
    Merger expenses of  $2,750,000. These expenses  include investment  banking,
    legal, accounting and miscellaneous transaction costs of the Merger, and are
    excluded  from  the  pro  forma  statements  of  operations.  Plans  for the
    integration and  consolidation of  the companies'  operations are  currently
    being  developed,  but associated  costs  are not  presently  estimable. The
    accounting policies utilized  by Isolyser and  Microtek are currently  being
    studied  from a conformity perspective; however, the impact of any potential
    adjustment is not presently expected to be material.
 
                                       13
<PAGE>
                           COMPARATIVE PER SHARE DATA
 
    The following  table sets  forth certain  per common  share information  for
Isolyser  and Microtek on  both historical and pro  forma combined bases. Income
(loss) per common share  information represents income  (loss) per common  share
before  extraordinary items and  the cumulative effect  of changes in accounting
principles. Pro forma combined income (loss)  per share is derived from the  pro
forma  combined financial  information presented  elsewhere herein,  which gives
effect to the Merger under the pooling  of interests method of accounting as  if
the Merger had occurred at the beginning of the earliest year presented. For the
year  ended December 31, 1995, pro forma combined income (loss) per common share
also gives effect to  Isolyser's acquisitions of SafeWaste  on May 31, 1995  and
White  Knight  effective  September  1,  1995  and  Microtek's  acquisitions  of
Medi-Plast on November  30, 1995, and  Venodyne on  April 27, 1996,  as if  such
acquisitions  had occurred at  the beginning of  Isolyer's and Microtek's fiscal
years, January 1, 1995 and December 1, 1994, respectively. For the  three-months
ended  March  31, 1996  pro forma  combined  income (loss)  per common  share of
Isolyser and Microtek, respectively, also gives effect to Microtek's acquisition
of Venodyne as if such acquisition had occurred at December 1, 1994.
 
    Historical book value per common  share as of the end  of each year and  the
three-month  period presented  is computed by  dividing historical shareholders'
equity by the  number of common  shares outstanding  at the end  of each  period
presented.  Pro forma combined book value per common share as of March 31, 1996,
is computed by dividing pro forma combined shareholders' equity on such dates by
the corresponding number of shares of Isolyser Common Stock outstanding on  such
dates,  adjusted for  the shares of  Isolyser Common  Stock to be  issued in the
Merger.
 
    The equivalent  pro forma  combined per  share information  for Microtek  is
determined  by multiplying the Isolyser pro forma combined per share information
by the Exchange Ratio,  assumed to be  equal to 1.32  shares of Isolyser  Common
Stock for each share of Microtek Common Stock.
 
<TABLE>
<CAPTION>
                                                                                         PER SHARE OF COMMON STOCK
                                                                                     ---------------------------------
                                                                                      INCOME       CASH        BOOK
                                                                                      (LOSS)     DIVIDEND      VALUE
                                                                                     ---------  -----------  ---------
<S>                                                                                  <C>        <C>          <C>
Isolyser -- Historical
  Year Ended December 31:
    1993...........................................................................  $    0.04   $  --       $    0.82
    1994...........................................................................      (0.11)     --            3.78
    1995...........................................................................      (0.11)     --            5.72
    Three-months ended March 31, 1996..............................................      (0.01)     --            5.70
Isolyser -- Pro Forma Combined
  Year Ended December 31:
    1993...........................................................................  $    0.08   $  --       $  --
    1994...........................................................................      (0.03)     --          --
    1995...........................................................................      (0.04)     --          --
    Three-months ended March 31, 1996..............................................       0.01      --            5.28
Microtek -- Historical
  Year Ended November 30:
    1993...........................................................................  $    0.20   $  --       $    4.06
    1994...........................................................................       0.11      --            4.17
    1995...........................................................................       0.47      --            4.60
    Three-months ended February 29, 1996...........................................       0.15      --            4.76
Microtek -- Equivalent Pro Forma Combined
  Year Ended December 31:
    1993...........................................................................  $    0.11   $  --       $  --
    1994...........................................................................      (0.04)     --          --
    1995...........................................................................      (0.05)     --          --
    Three-months ended February 29, 1996...........................................       0.01      --            6.96
</TABLE>
 
                                       14
<PAGE>
                         COMPARATIVE MARKET PRICE DATA
 
    The  Isolyser  Common Stock  and the  Microtek Common  Stock are  traded and
quoted on  Nasdaq.  The  table  below sets  forth,  for  the  calendar  quarters
indicated,  the reported high and  low sale prices of  the Isolyser Common Stock
and of the Microtek  Common Stock as  reported on Nasdaq, which  in the case  of
Isolyser  Common Stock is for  the period since the  Isolyser Common Stock began
trading publicly on October 21, 1994. Neither Isolyser nor Microtek has declared
or paid any cash  dividends on their respective  Common Stock. Each of  Isolyser
and  Microtek currently  intends to  retain any  future earnings  to finance the
growth and development of its business and therefore does not anticipate  paying
any  cash dividends in the foreseeable  future. In addition, the credit facility
maintained by each of Isolyser and Microtek prohibits the declaration or payment
of cash dividends without the prior written consent of their respective lenders.
 
<TABLE>
<CAPTION>
                                                                                ISOLYSER              MICROTEK
                                                                            COMMON STOCK (1)        COMMON STOCK
                                                                          --------------------  --------------------
CALENDAR YEAR                                                               HIGH        LOW       HIGH        LOW
- ------------------------------------------------------------------------  ---------  ---------  ---------  ---------
<S>                                                                       <C>        <C>        <C>        <C>
1994
First Quarter...........................................................     --         --      $    6.50  $    5.25
Second Quarter..........................................................     --         --           6.50       5.50
Third Quarter...........................................................     --         --           7.75       5.50
Fourth Quarter..........................................................  $   12.00  $    6.44       7.00       4.13
1995
First Quarter...........................................................       9.63       8.13       6.00       4.25
Second Quarter..........................................................      17.88       8.38       5.88       4.50
Third Quarter...........................................................      21.06      15.38       7.50       5.50
Fourth Quarter..........................................................      23.00      10.00       9.25       5.75
1996
First Quarter...........................................................      18.25      11.50      16.00       8.50
Second Quarter..........................................................      21.00      10.50      18.00      11.25
</TABLE>
 
- ------------------------
(1) On September 1, 1995, Isolyser declared a two-for-one stock split. The stock
    split was effected in the form of  a share dividend paid on October 2,  1995
    to  Isolyser shareholders of record on September  15, 1995. The high and low
    prices per share of Isolyser  common stock have been retroactively  adjusted
    to reflect the stock split.
 
    On  March  15,  1996,  the  last  full  trading  day  prior  to  the  public
announcement of the  execution and delivery  of the Merger  Agreement, the  last
reported  sale price of the Isolyser Common Stock on Nasdaq was $16.88 per share
and the last  reported sale price  of the  Microtek Common Stock  on Nasdaq  was
$11.25 per share.
 
    On  July 1, 1996, the most recent practicable date prior to the date of this
Joint Proxy Statement/ Prospectus, the last reported sale price of the  Isolyser
Common  Stock on Nasdaq was $12.50 per share and the last reported sale price of
the Microtek Common Stock on Nasdaq was $14.75 per share.
 
    Because the market price of Isolyser Common Stock may fluctuate, the  market
value  of the shares  of Isolyser Common  Stock that holders  of Microtek Common
Stock will receive in  the Merger cannot be  determined until the  Determination
Price  has been  fixed and  the Merger  is consummated.  After the Determination
Price is fixed, there will be a five-trading day period when the market value of
Isolyser Common Stock may increase or  decrease without affecting the amount  of
Isolyser  Common Stock which Microtek stockholders  will receive pursuant to the
Merger. Fluctuations in the market price of Microtek Common Stock will not  have
any effect on the Determination Price. Microtek stockholders are urged to obtain
current  market quotations for the Isolyser Common Stock and the Microtek Common
Stock. See "The Merger -- General."
 
                                       15
<PAGE>
                                  THE MEETINGS
 
ISOLYSER MEETING
 
    This  Joint  Proxy  Statement/Prospectus  is  furnished  to  shareholders of
Isolyser in  connection  with the  solicitation  of  proxies on  behalf  of  the
Isolyser  Board  of Directors  for use  at the  Isolyser Meeting  to be  held on
           , 1996. Proxies in  the form enclosed will  be voted at the  Isolyser
Meeting, if properly executed, returned to Isolyser prior to the meeting and not
revoked. A proxy may be revoked at any time before it is voted by giving written
notice  to the secretary of  Isolyser. The approximate date  on which this Joint
Proxy Statement/Prospectus and  the enclosed proxy  card will be  first sent  to
Isolyser shareholders is            , 1996.
 
    OUTSTANDING   CAPITAL  SHARES  AND  RECORD  DATE.     The  record  date  for
shareholders  of  Isolyser  entitled  to   vote  at  the  Isolyser  Meeting   is
           ,  1996. At the close of business on that day, there were
shares of Isolyser Common Stock outstanding and entitled to vote at the Isolyser
Meeting.
 
    QUORUM AND VOTING.  The presence, in person or by proxy, of the holders of a
majority of the  outstanding shares  of Isolyser  Common Stock  is necessary  to
constitute  a quorum  at the  meeting. In  deciding all  questions, a  holder of
Isolyser Common Stock is entitled to one  vote, in person or by proxy, for  each
share held in his or her name on the record date. Abstentions will be treated as
Isolyser  Common Stock present and entitled  to vote for purposes of determining
the presence of a quorum. The affirmative  vote of the holders of a majority  of
the  shares of Isolyser Common Stock voting  at the Isolyser Meeting is required
to approve the Merger Proposal. Abstentions  and Broker Non-Votes, if any,  will
not  be included in vote titles and, as  such, will have no effect on the Merger
Proposal. As of             , 1996, Isolyser's executive officers and  directors
had the right to vote an aggregate of           shares of Isolyser Common Stock,
representing      % of the  shares of Isolyser Common Stock then outstanding. Of
these shares, Messrs. Taylor and Honeycutt have granted Microtek an  irrevocable
proxy to vote all of their Isolyser Common Stock in favor of the Merger Proposal
representing      % of  the shares of  Isolyser Common Stock  outstanding on the
record date.
 
    ACTION TO BE TAKEN AT THE ISOLYSER MEETING.  The sole matter to be addressed
at the Isolyser Meeting is to consider and vote upon the proposal to approve the
issuance of up to 8,758,720 shares  of Isolyser Common Stock in connection  with
the  Merger  (i.e., the  Merger Proposal).  The  accompanying proxy,  unless the
shareholder otherwise  specifies in  the proxy,  will be  voted for  the  Merger
Proposal  and at the discretion of the proxy holder on any other matter that may
properly come before the meeting or any adjournment thereof. Where  shareholders
have appropriately specified how the proxies are to be voted, they will be voted
accordingly.  If any other matter of business is brought before the meeting, the
proxy holders  may  vote the  proxies  at  their discretion.  The  directors  of
Isolyser do not know of any such other matter of business.
 
MICROTEK MEETING
 
    This  Joint  Proxy  Statement/Prospectus  is  furnished  to  stockholders of
Microtek in  connection  with the  solicitation  of  proxies on  behalf  of  the
Microtek  Board  of Directors  for use  at the  Microtek Meeting  to be  held on
      , 1996.  Proxies  in the  form  enclosed will  be  voted at  the  Microtek
Meeting, if properly executed, returned to Microtek prior to the meeting and not
revoked. A proxy may be revoked at any time before it is voted by giving written
notice  to the Secretary of  Microtek. The approximate date  on which this Joint
Proxy Statement/Prospectus and  the enclosed proxy  card will first  be sent  to
Microtek stockholders is       , 1996.
 
    OUTSTANDING CAPITAL STOCK AND RECORD DATE.  The record date for stockholders
of  Microtek entitled to vote  at the Microtek Meeting is         , 1996. At the
close of business on that day, there  were            shares of Microtek  Common
Stock outstanding and entitled to vote at the Microtek Meeting.
 
    QUORUM AND VOTING.  The presence, in person or by proxy, of the holders of a
majority  of the  outstanding shares  of Microtek  Common Stock  is necessary to
constitute a quorum at the meeting. In
 
                                       16
<PAGE>
deciding all questions,  a holder of  Microtek Common Stock  is entitled to  one
vote,  in person  or by proxy,  for each share  held in  his or her  name on the
record date. An abstention will  be included in vote  totals and, as such,  will
have  the same effect on each proposal  as a negative vote. Broker non-votes, if
any, will not be included  in vote totals and, as  such, will have no effect  on
any  proposal. Approval of the Merger Agreement requires the affirmative vote of
holders of  a majority  of the  issued and  outstanding Microtek  Common  Stock.
Certain  stockholders  of Microtek  who at  the  record date  collectively owned
approximately       %  of the  outstanding Microtek  Common Stock  have  granted
Isolyser  an irrevocable  proxy to  vote all of  their Microtek  Common Stock in
favor of the proposed Merger. The affirmative vote of the holders of a  majority
of  the  shares represented  at the  Special  Meeting will  be required  for the
approval of the Option Proposal and all other proposals submitted for a vote  at
the Special Meeting.
 
    ACTION  TO BE TAKEN AT THE SPECIAL  MEETING.  The accompanying proxy, unless
the stockholder otherwise specifies in the proxy, will be voted at the  Microtek
Meeting  (i) for  approval of  the Merger  Agreement, (ii)  for approval  of the
Option Proposal and (iii) at  the discretion of the  proxy holders on any  other
matter  that may  properly come before  the meeting or  any adjournment thereof.
Where stockholders  have appropriately  specified how  their proxies  are to  be
voted,  they  will be  voted accordingly.  If  any other  matter of  business is
brought before the  meeting, the  proxy holders may  vote the  proxies at  their
discretion.  The directors of Microtek  do not know of  any such other matter of
business. A  representative of  KPMG Peat  Marwick LLP,  Microtek's  independent
auditors, is expected to be present at the Special Meeting and will be available
to answer questions.
 
SOLICITATION OF PROXIES
 
    Isolyser  and Microtek  will each bear  the cost of  solicitation of proxies
from their respective stockholders. In  addition to soliciting proxies by  mail,
directors,  officers and employees  of Isolyser and  Microtek, without receiving
additional compensation  therefor, may  solicit proxies  by personal  interview,
telephone  and telegram. Arrangements have also been made with brokerage houses,
banks and  other custodians,  nominees  and fiduciaries  for the  forwarding  of
soliciting  material to the  beneficial owners of the  shares of Isolyser Common
Stock and Microtek Common Stock held of record by such persons, and Isolyser and
Microtek will respectively reimburse them for reasonable out-of-pocket  expenses
incurred by them in connection therewith.
 
                                   THE MERGER
 
GENERAL
 
    The  terms  and  conditions  of  the Merger  are  set  forth  in  the Merger
Agreement,   the   text   of   which   is   attached   to   this   Joint   Proxy
Statement/Prospectus  as Annex A. The summary  of the Merger Agreement contained
in this Joint Proxy Statement/Prospectus does not purport to be complete and  is
qualified in its entirety by reference to the complete text of such document.
 
    At  the time the  Merger becomes effective, the  Isolyser Subsidiary will be
merged with and into Microtek  in accordance with Delaware  law. As a result  of
the  Merger, the separate corporate existence  of the Isolyser Subsidiary (which
was formed solely  for the purposes  of the Merger  and has not  engaged in  any
operations  or businesses) will cease, and  Microtek will continue its existence
as a wholly-owned subsidiary of Isolyser.
 
    Upon the consummation of the  Merger, the Microtek Common Stock  outstanding
immediately  prior  to  the time  the  Merger becomes  effective  (the "Microtek
Shares") will be converted into  the right to receive  such number of shares  of
Isolyser  Common Stock (the "Isolyser Shares") as  is equal to $16.50 divided by
the "Determination  Price." The  Determination  Price is  equal to  the  Average
Closing  Price (but not  less than $10.00  or greater than  $15.00) per share of
Isolyser Common Stock on  Nasdaq for the 20  trading days immediately  preceding
the fifth trading day before the Effective Date. Any fractional shares resulting
from  such  conversion will  entitle  the holder  to  receive cash.  See  "-- No
Fractional  Shares."  The  shares  of  capital  stock  of  Isolyser  outstanding
immediately prior to the Merger will not be affected as a result of the Merger.
 
                                       17
<PAGE>
    The following table illustrates the consideration to be received by Microtek
stockholders  for  each  outstanding  share of  Microtek  Common  Stock assuming
consumation of  the  Merger and  without  regard to  cash  payments in  lieu  of
fractional shares.
 
<TABLE>
<CAPTION>
    AVERAGE
    CLOSING      DETERMINATION   EXCHANGE    NOMINAL       NEWLY ISSUED
   PRICE (1)       PRICE (1)    RATIO (1)   VALUE (1)   ISOLYSER SHARES(2)
- ---------------  -------------  ----------  ----------  ------------------
<S>              <C>            <C>         <C>         <C>
  $  16.00(3)       $15.00          1.1000   $  17.60         5,839,146
  $  15.00(3)       $15.00          1.1000   $  16.50         5,839,146
  $  14.00(3)       $14.00          1.1786   $  16.50         6,256,380
  $  13.00(3)       $13.00          1.2692   $  16.50         6,737,313
  $  12.00(3)       $12.00          1.3750   $  16.50         7,298,933
  $  11.00(3)       $11.00          1.5000   $  16.50         7,962,472
  $  10.00(4)       $10.00          1.6500   $  16.50         8,758,720
  $   9.00(4)       $10.00          1.6500   $  14.85         8,758,720
</TABLE>
 
- ------------------------
(1)  The Determination Price is equal to  the Average Closing Price per share of
    Isolyser Common  Stock  on  Nasdaq  for  the  20  trading  days  immediately
    preceding the fifth trading day before the Effective Date; provided, that in
    the  event that at the Effective Date  the Determination Price of a share of
    Isolyser Common Stock is less than $10.00 per share, then the  Determination
    Price  shall be deemed to  have been $10.00; and  provided, further, that in
    the event that at the Effective Date  the Determination Price of a share  of
    Isolyser  Common Stock is more than $15.00 per share, then the Determination
    Price shall be  deemed to  be $15.00.  The Exchange  Ratio is  equal to  the
    quotient  obtained by dividing  (a) $16.50 by  (ii) the Determination Price.
    The nominal  value  shown  is  the product  of  the  Average  Closing  Price
    multiplied  by  the  Exchange  Ratio. The  Average  Closing  Price  does not
    necessarily reflect the current  market value per  share of Isolyser  Common
    Stock  at any given  time (including the Effective  Date) because the market
    price  of  Isolyser  Common  Stock  may  fluctuate  and  there  will  be   a
    five-trading  day period when the market  value of Isolyser Common Stock may
    increase or decrease without affecting  the amount of Isolyser Common  Stock
    which  Microtek stockholders  will receive  pursuant to  the Merger.  If the
    Average Closing Price was equal  to the current market  value of a share  of
    Isolyser Common Stock on the Effective Date, the nominal value stated in the
    table  would represent the market value on  the Effective Date of the shares
    of Isolyser Common Stock that holders of Microtek Common Stock will  receive
    in the Merger on a per share basis.
 
(2)  The  Newly Issued  Isolyser Shares  reflects the  total number  of Isolyser
    Shares to  be issued  upon  consummation of  the  Merger assuming  that  all
    outstanding  Microtek  stock  options  were  exercised  and  converted  into
    Microtek Common Stock prior to or upon consummation of the Merger based upon
    there being  an  aggregate of  5,308,315  shares of  Microtek  Common  Stock
    outstanding  or  purchasable upon  the  exercise of  issued  and outstanding
    Microtek stock options.
 
(3) The Merger  Agreement provides the  Determination Price shall  not be  lower
    than  $10.00 or  higer than  $15.00. Therefore,  the Exchange  Ratio remains
    fixed at (a) 1.100 at an Average Closing Price $15.00 or more and (b) 1.6500
    at an Average Closing Price of  $10.00 or less. The formula for  determining
    the  Exchange Ratio would result in  Microtek stockholders receiving a fixed
    number of Isolyser  Shares having a  nominal value greater  than $16.50  per
    share to the extent that the Average Closing Price exceeds $15.00 per share;
    a variable number of Isolyser Shares representing $16.50 in nominal value to
    the  extent that the Average  Closing Price is neither  less than $10.00 nor
    more than $15.00;  and a fixed  number of Isolyser  Shares having a  nominal
    value  less than  $16.50 per  share to the  extent that  the Average Closing
    Price is less than $10.00 per share.
 
(4) In the event that  the Average Closing Price  falls below $10.00 per  share,
    the  Board of Directors of  either Isolyser or Microtek  may elect to pursue
    one of the following  alternatives: (i) terminate  the Merger Agreement  and
    abandon  the Merger, (ii) not terminate  the Merger Agreement and consummate
    the Merger at a fixed Exchange Ratio of 1.65 Isolyser Shares for each  share
    of  Microtek Common Stock,  or (iii) negotiate  with the other  party to the
    Merger Agreement to
 
                                       18
<PAGE>
    increase or decrease the Exchange Ratio. In determining what alternatives to
    follow under  these circumstances,  the respective  Boards of  Directors  of
    Isolyser  and  Microtek  will  take  into  account,  consistent  with  their
    respective fiduciary duties, all  relevant facts and circumstances  existing
    at  the  time  including, without  limitation,  whether the  other  party is
    prepared or willing to increase or decrease the Exchange Ratio and  continue
    the  Merger Agreement in effect, an analysis  of the reasons for the trading
    price of  the Isolyser  Common Stock,  the relative  value of  the  Isolyser
    Common  Stock compared  to other health  care common stocks  in general, the
    factors considered by the respective Boards in recommending adoption of  the
    Merger  Agreement initially (see  "The Merger --  Isolyser's Reasons For the
    Merger" and "-- Microtek's Reasons For the Merger"), and the advice of their
    respective financial advisors  and legal  counsel. By  approving the  Merger
    Agreement,  the  Isolyser and  Microtek stockholders  will  be deemed  to be
    authorizing the respective Boards of Isolyser and Microtek to determine,  in
    the  exercise of their  respective fiduciary duties, to  proceed with any of
    the alternatives described above in the  event the Average Closing Price  is
    below $10.00 per share. If, however, the parties elect to pursue alternative
    (iii),  as  described above,  and the  parties agree  to either  decrease or
    increase the Exchange Ratio, this  Joint Proxy Statement/Prospectus will  be
    recirculated  and  the  parties'  respective stockholders  will  be  given a
    further opportunity to reconsider their investment decision and the  revised
    number  of shares of  Isolyser Common Stock  to be issued  for each share of
    Microtek Common Stock. See "The Merger -- Amendment of the Merger Agreement;
    Waiver of Conditions" and "-- Termination of Merger Agreement."
 
    Isolyser  and   Microtek  will   issue  a   press  release   on  or   before
                  ,  1996 (four days prior to the Isolyser and Microtek Meetings
to consider the Merger  Proposal to announce  the Determination Price,  Exchange
Ratio  and exact number of shares of Isolyser Common Stock to be issued for each
share of Microtek  Common Stock,  and the number  of shares  of Isolyser  Common
Stock   to  be   issued  in   connection  with   the  Merger.   From  and  after
                  , 1996,  Microtek  stockholders may  call  1(800)844-0988  for
information  as to  the exact number  of shares  of Isolyser Common  Stock to be
issued for each share of Microtek Common Stock. Isolyser and Microtek have  each
arranged  for  their  respective  stockholders to  submit  completed  proxies by
facsimile transmission. Any Isolyser stockholder who desires to submit his proxy
by facsimile transmission should send a completed copy of his executed proxy  to
Isolyser,  c/o SunTrust Bank, Attention:                              , at (404)
        . The telephone confirmation number  for Isolyser proxies submitted  via
facsimile  is              .  Any Microtek stockholder who desires to submit his
proxy by facsimile  transmission should send  a completed copy  of his  executed
proxy  to Microtek,  c/o Boatmen's Trust  Company, Attention: Linda  M. Welch or
Michele T.  Smith, at  (314)  466-2469. The  telephone confirmation  number  for
Microtek proxies submitted via facsimile is 1 (800) 456-9852.
 
    Isolyser  will  treat the  Merger  as a  pooling-of-interests  for financial
reporting purposes. See "-- Accounting Treatment." The Merger is intended to  be
a  tax-free reorganization under the  federal income tax laws,  and, as such, no
gain or  loss will  be recognized  by the  stockholders of  Microtek upon  their
receipt  of the Isolyser Shares  in exchange for their  Microtek Shares. Gain or
loss will be recognized, however, by holders of Microtek Shares to the extent of
any cash received by the Microtek stockholders for any fractional share  amount.
See "-- Certain Federal Income Tax Consequences."
 
BACKGROUND OF THE MERGER
 
    Microtek completed an initial public offering of its Common Stock in October
1992.  During 1993, Baxter  International ("Baxter"), which  was then Microtek's
largest customer, resumed the internal manufacturing of surgical drape  products
previously  purchased  from Microtek.  Primarily  as a  result  of this  loss of
business, Microtek's net earnings per share declined from $.15 in fiscal 1992 to
$.11 in  fiscal 1994.  Microtek management  responded to  the loss  of  Baxter's
business  by  implementing  a  strategic  plan  to  reduce  operating  costs and
diversify its customer base. Nevertheless, the price of Microtek's Common  Stock
as  reported on Nasdaq dropped from a high of  $14.50 in fiscal 1992 to a low of
$4.13 in fiscal 1994.
 
                                       19
<PAGE>
    In April  1994, Microtek  engaged the  firm of  Goldman, Sachs  to  evaluate
various  strategic  alternatives  to  enhance  stockholder  value,  including  a
possible sale  of  Microtek.  During  the course  of  this  engagement,  several
companies  were  approached  by Goldman  Sachs  to determine  their  interest in
purchasing Microtek. Microtek's  management was familiar  with Isolyser and  had
previously  discussed with Isolyser management  Isolyser's potential interest in
making a strategic investment in Microtek. On this basis, Goldman Sachs included
Isolyser among  the third  parties it  contacted regarding  a proposed  sale  of
Microtek.  After several months, the Microtek Board of Directors determined that
no third party  had demonstrated  sufficient interest in  acquiring Microtek  to
merit  further  negotiations, and  on  March 3,  1995,  Microtek issued  a press
release indicating that any  discussions regarding a sale  of Microtek had  been
terminated.
 
    During  fiscal 1995,  Microtek achieved net  sales and  net income exceeding
that reported for  any year  since its initial  public offering.  Also in  1995,
Microtek  completed  several acquisitions  and  increased its  international net
sales. In April  1995, Isolyser  and Microtek entered  into a  joint venture  to
facilitate  the manufacture  in the Dominican  Republic of  certain Isolyser raw
materials into  finished  products. As  a  result  of this  joint  venture,  the
management of Isolyser and Microtek maintained contact with one another.
 
    On  February  8, 1996,  Robert  L. Taylor,  under  his general  authority as
Isolyser's Chairman and  Chief Executive Officer,  telephoned Kimber L.  Vought,
the Chief Executive Officer of Microtek, to indicate that Isolyser might have an
interest in acquiring Microtek. Mr. Vought responded by indicating that Microtek
would  not be willing to enter  into any negotiations regarding such acquisition
unless Isolyser were to provide Microtek with  a written offer at a price  level
sufficient  to warrant Microtek's hiring of  a financial advisor to evaluate the
offer. At a teleconference meeting of  the Microtek Board on February 13,  1996,
Mr.  Vought advised the directors  of the contact from  Mr. Taylor. The Microtek
Board, after discussing such matters in detail, requested further  presentations
from management regarding such a proposed transaction at its scheduled quarterly
meeting  on February 20, 1996. At the meeting on February 20, 1996, the Microtek
Board decided to permit Isolyser to clarify its interest in purchasing  Microtek
at  a sufficiently high price to  warrant allowing Isolyser due diligence access
to Microtek.
 
    In order to be responsive to  Microtek's request to provide a written  offer
at  a  specific  price level  to  acquire  Microtek, Mr.  Taylor  requested that
Microtek provide certain  non-public information  in order  that Isolyser  might
complete its evaluation of Microtek. On February 21, 1996, Microtek entered into
a  confidentiality agreement  with Isolyser  relating to  Microtek furnishing to
Isolyser certain  non-public information  regarding Microtek.  As part  of  that
confidentiality  agreement,  Isolyser  agreed that,  without  the  prior written
consent of Microtek, it would not, for a period of three years, seek control  of
Microtek.  On  February 29,  1996, informal  meetings  were held  among Isolyser
representatives  and   Microtek   representatives  regarding   such   non-public
information.
 
    On  March 1,  1996, Isolyser  engaged Morgan  Keegan to  serve as Isolyser's
financial advisor in connection with  the proposed acquisition of Microtek  and,
in  that capacity, to  assist Isolyser in developing  an appropriate value range
for such acquisition, negotiate  with Microtek and  its representatives and,  if
requested  by  Isolyser's Board  of  Directors, provide  its  opinion as  to the
fairness,  from  a  financial  point  of  view,  of  the  Merger  to  Isolyser's
shareholders.  On March 4, 1996, Isolyser sent  to Microtek a proposed letter of
intent to acquire the Common Stock of Microtek in a merger transaction providing
for a fixed  exchange ratio of  .965 shares  of Isolyser Common  Stock for  each
outstanding  share  of  Microtek Common  Stock.  Based on  then  current trading
prices, this ratio resulted in an acquisition consideration of $16.50 per  share
of  Microtek Common Stock. The  Microtek Board met on  March 4, 1996 to consider
the letter of intent. The Microtek Board determined that a fixed exchange  ratio
would  not be in the best interest of Microtek stockholders due to the perceived
volatility of  the  Isolyser Common  Stock  sale  price. At  such  meeting,  the
Microtek  Board  decided to  retain Goldman  Sachs as  its financial  advisor to
evaluate the  proposed  offer  and  to assist  Microtek  in  its  due  diligence
investigation  of  Isolyser and  in its  negotiation of  improved terms  for the
proposed fixed  exchange ratio.  Goldman Sachs  thereafter contacted  Isolyser's
financial advisor to discuss certain adjustments
 
                                       20
<PAGE>
to  the exchange ratio and a termination right in favor of Microtek in the event
that the Isolyser  Common Stock price  traded below a  specified level.  Goldman
Sachs  and  Microtek  management reported  to  the Microtek  Board  the proposed
resolution of these issues at a  teleconference meeting on March 8, 1996.  Based
upon the proposed resolution, Microtek furnished to Isolyser a proposed draft of
the  Merger  Agreement on  March  10, 1996.  Also,  on March  8,  1996, Microtek
executed a confidentiality agreement  with Isolyser (substantially identical  to
the  agreement executed by  Isolyser in favor of  Microtek) relating to Isolyser
furnishing to  Microtek certain  non-public information  and Microtek  requested
certain non-public information regarding Isolyser.
 
    During  the  week  of March  11,  representatives of  Isolyser  and Microtek
negotiated the terms  of the Merger  Agreement, subject to  the approval of  the
Boards of Directors of Isolyser and Microtek. During the week of March 11, 1996,
Isolyser's   legal  counsel,  financial  advisors  and  independent  accountants
conducted various limited due diligence investigations of Microtek. At a meeting
on March  12,  1996, Isolyser  representatives  gave a  detailed  due  diligence
presentation  to  the  Microtek Board.  The  respective Boards  of  Directors of
Isolyser and Microtek,  together with  their respective  financial advisors  and
legal  counsel, met on Friday,  March 15, 1996, to  consider the proposed Merger
and Merger  Agreement,  at  which  time the  Boards  of  Isolyser  and  Microtek
respectively  authorized  their execution  and delivery  of the  Original Merger
Agreement. After the close of the market on Friday, March 15, 1996, the Original
Merger  Agreement  was  executed  by   Microtek  and  Isolyser,  and  a   public
announcement  of the Original Merger Agreement  and the proposed Merger was made
before the commencement  of trading on  Monday, March 18,  1996. As executed  on
March  15, 1996, the Original Merger Agreement  provided that (i) if the average
closing price was below $14.50  (the "Collar's Floor"), the Determination  Price
would  nevertheless be  $14.50, and (ii)  Microtek could elect  to terminate the
Original Merger Agreement  if the average  closing price was  below $13.00  (the
"Termination  Price"),  with  the  average  closing  price  in  each  case being
calculated based upon  the average closing  price per share  of Isolyser  Common
Stock  as  reported  on  The  Nasdaq  Stock  Market  over  the  20  trading days
immediately preceding the second trading day prior to the Effective Date.
 
    Following the  execution  and delivery  of  the Original  Merger  Agreement,
Isolyser  filed  with  the  Commission  a  registration  statement  on  Form S-4
containing a  proxy  statement/  prospectus  for  use  in  connection  with  the
transactions  contemplated by  the Original Merger  Agreement. That registration
statement was declared effective by the Commission on May 24, 1996 and the proxy
statement/ prospectus included therein was  mailed to the Microtek  stockholders
on  May 28, 1996 for a proposed meeting of the Microtek stockholders on June 28,
1996. The parties therefore anticipated that the average closing price would  be
calculated  based on the closing sale prices  of Isolyser Common Stock on Nasdaq
for those trading days beginning May 29, 1996 and ending June 25, 1996.
 
    The average  closing price  of Isolyser  Common Stock  on Nasdaq  for  those
trading  days from May  29, 1996 through June  25, 1996 was  $12.29, with a high
closing price on May 30, 1996 of $13.88 and a low closing price on June 21, 1996
of $11.00. In recognition of the  possibility that the average closing price  of
Isolyser  Common Stock could  fall below $13.00 per  share, Mr. Vought contacted
Mr. Taylor on June 6, 1996 to advise Mr. Taylor of Microtek's continuing support
of the Merger  and Microtek's  objective to reduce  the Collar's  Floor and  the
Termination  Price. Mr. Taylor confirmed to Mr. Vought Isolyser's support of the
Merger, and  referred  any  discussions  relative  to  the  Exchange  Ratio  and
Termination  Price to Morgan Keegan as  Isolyser's financial advisor. During the
week of  June  10, 1996,  the  respective  financial advisors  of  Isolyser  and
Microtek  discussed  possible  modifications  of  the  Collar's  Floor  and  the
Termination Price.  After consideration  of the  Isolyser Common  Stock  trading
prices  during the week  of June 10,  1996, the parties'  respective counsel was
requested to prepare draft  modifications to the  Original Merger Agreement  for
consideration  by the  parties, and  the parties'  respective financial advisors
were requested to analyze  proposed modifications to the  Exchange Ratio from  a
financial  point  of view  to  respectively advise  the  Boards of  Isolyser and
Microtek on such modifications.  The Boards of  Isolyser and Microtek,  together
with  their respective financial  advisors and legal  counsel, separately met on
Friday, June 21, 1996 and Sunday,  June 23, 1996, respectively, to consider  the
proposed    amendments   to   the   Original    Merger   Agreement,   at   which
 
                                       21
<PAGE>
time the Boards of Isolyser and Microtek respectively authorized their execution
and delivery of the Merger Agreement.  Following the Board meetings, the  Merger
Agreement  was executed by  Microtek and Isolyser, and  a public announcement of
the Merger Agreement was made  on Monday, June 24,  1996, before the opening  of
the Nasdaq market trading.
 
ISOLYSER'S REASONS FOR THE MERGER
 
    In  approving the  Original Merger Agreement  and the  Merger Agreement, the
Isolyser Board  considered the  following  business issues  which had  been  the
subject  of negotiations during the  week of March 11, 1996  and June 11 to June
21, 1996: (i) the method of establishing the consideration payable in respect of
the Merger, including the  method of establishing  the Determination Price,  the
right  of Isolyser and Microtek  to terminate the Merger  Agreement in the event
that the average closing price per share of the Isolyser Common Stock on  Nasdaq
for  the 20 trading days immediately preceding  the fifth trading day before the
Effective Date  is  less than  $10.00,  and  the historical  trading  prices  of
Isolyser  and Microtek Common Stock; (ii) the amount of debt payable by Microtek
and the potential increase in  such debt to the  extent permitted by the  Merger
Agreement;  (iii)  the accounting  treatment for  the transaction  and estimated
transaction costs; (iv) the various  representations and warranties of  Microtek
and  the disclosures of  Microtek contained in the  Merger Agreement and related
disclosure  schedules;  (v)  the  covenants  of  Isolyser,  including,   without
limitation,  the indemnification provisions contained in the Merger Agreement to
indemnify the directors and officers of Microtek and restrictions on the  number
of  shares  issuable  by Isolyser  without  the  consent of  Microtek;  (vi) the
respective termination  rights  contained in  the  Merger Agreement;  (vii)  the
provisions in the Merger Agreement limiting Microtek's Board in negotiating with
third  parties  in the  event  of an  unsolicited  Acquisition Proposal  and the
contingent obligation of  Microtek to  pay Isolyser $2.5  million under  certain
circumstances related to such an Acquisition Proposal; and (viii) the absence of
any  indemnification  provisions by  the shareholders  of  Microtek in  favor of
Isolyser. After  consideration of  these and  other issues,  the Isolyser  Board
unanimously  determined at its special meetings held  on March 15, 1996 and June
21, 1996, that the Merger and the Merger Agreement were in the best interests of
Isolyser  and  Isolyser's  shareholders  and,  therefore,  approved  the  Merger
Agreement.  At its  special meeting  held on June  21, 1996,  the Isolyser Board
further unanimously determined  to recommend to  the Isolyser shareholders  that
they approve the Merger Proposal.
 
    Isolyser  considered a number of factors  in the course of its deliberations
at its Board  meetings held on  March 15, 1996  and June 21,  1996, but did  not
assign  any  relative  or specific  weight  to  the factors  considered  or give
prominence to  any specific  factor or  group  of factors.  In addition  to  the
business  issues  described in  the  preceding paragraph,  the  material factors
considered were  as  follows:  (i)  the  conversion  expertise  of  Microtek  in
manufacturing  its infection and fluid control products, and related benefits to
Isolyser in Isolyser's growth strategy to vertically integrate its  capabilities
in  manufacturing OREX-Registered Trademark-  Degradables-TM-; (ii) the relative
market position of  Microtek as  a low cost  manufacturer and  supplier of  film
products  used in the health care marketplace; (iii) the expertise of Microtek's
personnel in selling and marketing its products in the health care  marketplace;
(iv)  the gross margins  enjoyed by Microtek  on its products  and the volume of
such products which  might be included  in Isolyser's procedure  trays; (v)  the
international  sales generated by Microtek and potential improved access to such
international markets  which could  be  afforded Isolyser  as  a result  of  the
Merger;  (vi) the  complementary nature  of Microtek's  management to Isolyser's
management; (vii)  Microtek's sales  increased  12% in  1995 over  1994;  (viii)
Microtek's  operating income  increased 213%  in 1995  over 1994;  (ix) Microtek
would be expected to contribute  positively to Isolyser's net operating  results
following consummation of the Merger; (x) the stockholders and option holders of
Microtek  would hold up  to approximately 26%  of the shares  of common stock of
Isolyser outstanding immediately following the  Merger assuming the exercise  of
all  outstanding options to  purchase shares of Isolyser  Common Stock; (xi) the
historical trading price of  Microtek's and Isolyser's  Common Stock; and  (xii)
the presentation of Isolyser's financial advisor, Morgan Keegan, and its written
opinion (summarized below under "-- Opinion of Isolyser's Financial Advisor") to
the effect that,
 
                                       22
<PAGE>
subject  to the assumptions made, matters considered and limits of review as set
forth in such opinion, the number of Isolyser shares to be issued in the  Merger
was fair to the shareholders of Isolyser from a financial point of view.
 
    The Isolyser Board of Directors believes that each of these factors supports
its  recommendation that the Isolyser shareholders authorize consummation of the
Merger by approving the Merger Proposal.
 
MICROTEK'S REASONS FOR THE MERGER
 
    At meetings held on March  15, 1996, and June  23, 1996, the Microtek  Board
discussed  with Goldman Sachs and  reviewed with legal counsel  the terms of the
Merger Agreement,  including  the  representations,  warranties,  covenants  and
closing  conditions contained therein. At the meeting of the Board held on March
15, 1996, Goldman Sachs made a presentation to the Microtek Board and  delivered
its  opinion that,  as of  March 15,  1996, the  Exchange Ratio  pursuant to the
Original Merger Agreement  was fair  to the holders  of the  shares of  Microtek
Common  Stock. At the meeting of the Board  held on June 23, 1996, Goldman Sachs
made a presentation to the Microtek Board and delivered its opinion that, as  of
June  23, 1996, the Exchange Ratio pursuant  to the Merger Agreement was fair to
the holders of the shares of Microtek Common Stock.
 
    At the  March  15, 1996  and  June 23,  1996  meetings, the  Microtek  Board
unanimously  determined that the Merger was  advisable and in the best interests
of Microtek stockholders and approved the Merger Agreement.
 
    In reaching  its  conclusion to  enter  into  the Merger  Agreement  and  to
recommend  adoption of  the Merger Agreement  by the  Microtek stockholders, the
Microtek Board considered the following factors:
 
        (i) An assessment of  Microtek's strategic alternatives, which  included
    remaining a publicly owned independent company. In this regard, the Microtek
    Board  of Directors  concluded, following extensive  analysis and discussion
    with its legal  and financial  advisors and  among the  directors, that  the
    terms  of  the  Merger Agreement  provided  the  best means  for  holders of
    Microtek Common Stock to maximize the value of their holdings;
 
        (ii) The belief that the Merger will result in a strong combined  entity
    with complementary businesses, corporate goals and management philosophies;
 
       (iii)  Information relating  to the financial  performance, prospects and
    business operations  of each  of Microtek  and Isolyser  (which  information
    included  the  historical financial  information  contained in  the periodic
    public reports of Microtek and Isolyser and the descriptions of their  lines
    of business contained in such reports);
 
       (iv)  The terms  and conditions  of the  Merger Agreement,  including the
    right of Microtek to negotiate with and provide information to third parties
    and  terminate  the  Merger  Agreement  in  the  event  of  an   unsolicited
    Acquisition  Proposal, if  such action  is required  in the  exercise of the
    fiduciary duties  of  the Microtek  Board  of Directors  (if  the  foregoing
    termination  provision  is exercised,  Microtek  would be  obligated  to pay
    Isolyser $2.5 million (see " -- Fees and Expenses") which the Microtek Board
    of Directors did not  view as unreasonably precluding  any third party  from
    proposing  an alternative transaction), and the unilateral right of Microtek
    to terminate the Merger Agreement without penalty if the Determination Price
    is less than $10.00 per share;
 
        (v) The presentation of Microtek's financial advisor, Goldman Sachs, and
    its written opinions to the effect that, as of March 15, 1996, the  Exchange
    Ratio  pursuant to the Original Merger Agreement  was fair to the holders of
    shares of Microtek Common Stock and, as of June 23, 1996, the Exchange Ratio
    pursuant to  the Merger  Agreement was  fair  to the  holders of  shares  of
    Microtek  Common Stock  (for a  summary of  Goldman Sachs'  written opinion,
    including the assumptions made, matters considered and limits of review, see
    "-- Opinion of Microtek's Financial Advisor"). The full text of the  opinion
    of  Goldman Sachs dated June  23, 1996 is attached as  Annex C hereto and is
    incorporated herein by reference;
 
                                       23
<PAGE>
       (vi) The trading price of the  Microtek Common Stock since completion  of
    Microtek's  initial  public  offering  and  that  the  Merger  consideration
    (assuming  a  Determination  Price  of  $12.50)  represents  a  premium   of
    approximately  78% over the  highest price in  fiscal 1995 and approximately
    59% over the closing sale price of  $10.38 for the Microtek Common Stock  on
    Nasdaq  on  February  7,  1996,  the day  before  Microtek  became  aware of
    Isolyser's possible interest in pursuing the proposed Merger; and
 
       (vii)  The   prices  paid   in   other  recent   comparable   acquisition
    transactions.
 
    The Microtek Board of Directors believes that each of these factors supports
its  recommendation that the Microtek stockholders  approve and adopt the Merger
Agreement and approve the terms of the Merger.
 
    The Microtek Board believes that Microtek and the Microtek stockholders will
receive reasonable  protection  from  a  change  in  circumstances  relating  to
Isolyser  between  the  date of  the  Joint Proxy  Statement/Prospectus  and the
Effective Date through the inclusion in  the Merger Agreement of a condition  to
the  closing of the Merger to the effect that, since December 31, 1995, no event
shall have occurred which would have a material adverse effect on the  business,
operations, assets or financial condition of Isolyser or its subsidiaries, taken
as a whole.
 
    In  view of the  wide variety of  factors considered in  connection with its
evaluation of  the Merger,  the Microtek  Board  of Directors  did not  find  it
practicable  to, and did  not, quantify or otherwise  attempt to assign relative
weights to the specific  factors considered in  reaching its determination  that
the  terms of the  Merger Agreement are fair  to, and in  the best interests of,
Microtek and its stockholders.
 
    THE  MICROTEK  BOARD  OF  DIRECTORS  UNANIMOUSLY  RECOMMENDS  THAT  MICROTEK
STOCKHOLDERS VOTE TO APPROVE AND ADOPT THE MERGER AGREEMENT AND THE TRANSACTIONS
CONTEMPLATED THEREBY.
 
OPINION OF ISOLYSER'S FINANCIAL ADVISOR
 
    Morgan  Keegan was retained by  Isolyser to act as  its financial advisor in
connection with the Merger and to render an opinion to the Board of Directors of
Isolyser as to the fairness, from a financial point of view, to the shareholders
of Isolyser of the consideration to be  paid by Isolyser pursuant to the  Merger
Agreement.  Morgan  Keegan was  selected by  Isolyser  based on  Morgan Keegan's
experience, expertise and familiarity with Isolyser and its business.
 
    Morgan Keegan  is a  nationally recognized  investment banking  firm and  is
regularly  engaged in the  valuation of businesses  and securities in connection
with mergers and acquisitions, competitive biddings, secondary distributions  of
listed  and unlisted securities,  private placements and  valuations for various
purposes. Morgan Keegan has previously  rendered investment banking services  to
Isolyser,  including advising Isolyser with respect  to the acquisition of White
Knight Healthcare, Inc. in  1995, acting as  managing underwriter of  Isolyser's
initial  public offering  in 1994  and lead manager  of a  follow-on offering of
Isolyser Common Stock in  1995. On March 15,  1996, Morgan Keegan delivered  its
written  opinion dated March 15, 1996, to the Isolyser Board of Directors to the
effect that, as of that date, the consideration to be paid by Isolyser  pursuant
to  the Original Merger Agreement  was fair, from a  financial point of view, to
the shareholders of Isolyser.
 
    On June 21, 1996, at a meeting  called to consider the Merger Agreement  and
the Merger, representatives of Morgan Keegan made a presentation to the Isolyser
Board  of Directors with respect to various aspects of the Merger, including the
financial terms  and  conditions  of  the Merger.  In  addition,  Morgan  Keegan
delivered  its written opinion,  dated June 21,  1996, to the  Isolyser Board of
Directors to the effect that, as of  such date, the consideration to be paid  by
Isolyser  pursuant to the  Merger Agreement is  fair, from a  financial point of
view, to the shareholders of Isolyser.
 
    THE FULL TEXT OF THE JUNE 21,  1996 WRITTEN OPINION OF MORGAN KEEGAN,  WHICH
SETS  FORTH  THE ASSUMPTIONS  MADE, GENERAL  PROCEDURES FOLLOWED,  OTHER MATTERS
CONSIDERED AND LIMITATIONS ON THE REVIEW UNDERTAKEN IN
 
                                       24
<PAGE>
ARRIVING AT SUCH OPINION, IS  ATTACHED TO THIS JOINT PROXY  STATEMENT/PROSPECTUS
AS ANNEX B. ISOLYSER STOCKHOLDERS ARE URGED TO READ SUCH OPINION IN ITS ENTIRETY
AND THE SUMMARY OF SUCH OPINION SET FORTH HEREIN IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE  TO THE FULL TEXT OF SUCH OPINION. MORGAN KEEGAN'S OPINION IS DIRECTED
ONLY TO  THE  FAIRNESS,  FROM  A  FINANCIAL  POINT  OF  VIEW,  TO  THE  ISOLYSER
SHAREHOLDERS  OF THE CONSIDERATION TO BE PAID BY ISOLYSER PURSUANT TO THE MERGER
AGREEMENT, DOES  NOT ADDRESS  ANY OTHER  ASPECT OF  THE PROPOSED  MERGER OR  ANY
RELATED  TRANSACTION AND DOES NOT CONSTITUTE A RECOMMENDATION TO ANY STOCKHOLDER
OF MICROTEK AS TO HOW SUCH STOCKHOLDER SHOULD VOTE OR OTHERWISE.
 
    In arriving at its  opinion, Morgan Keegan reviewed  an unexecuted draft  of
the  Merger Agreement dated June 20, 1996  (which, for purposes of its analysis,
it assumed that any further revisions, including the filling in of blank  spaces
and  the attachment of final exhibits and appendices, would not materially alter
the terms and  provisions of  such documents and  that such  documents would  be
executed  as finalized); held discussions with various members of management and
representatives of Isolyser  and Microtek concerning  each company's  historical
and  current operations, financial condition  and prospects; reviewed historical
consolidated financial  and  operating  data  that  was  publicly  available  or
furnished  to it by Isolyser and Microtek; reviewed internal financial analyses,
financial and operating  forecasts, reports  and other  information prepared  by
officers and representatives of Isolyser and Microtek; reviewed certain publicly
available  information with respect to certain  other companies that it believed
to be comparable to Microtek and  the trading markets for such other  companies'
securities; reviewed certain publicly available information concerning the terms
of  certain  other transactions  that  it deemed  relevant  to its  inquiry; and
conducted such other financial studies, analyses and investigations as it deemed
appropriate for the purposes of its opinion.
 
    In connection with its review and  analysis and in arriving at its  opinion,
Morgan  Keegan did not assume responsibility for independent verification of any
of the information provided to or otherwise reviewed by Morgan Keegan and relied
upon its being complete and accurate in all respects. Morgan Keegan also assumed
the correctness  of  and  relied  upon the  representations  and  warranties  of
Isolyser  and Microtek  contained in  the Merger  Agreement. Morgan  Keegan also
relied upon the managements  of Isolyser and Microtek  as to the  reasonableness
and achievability of the financial and operating projections and the assumptions
and bases therefore provided to it, and assumed that such projections, including
without  limitation,  cost  savings  and operating  synergies  from  the Merger,
reflected  the  best  currently  available   estimates  and  judgments  of   the
managements  of Isolyser and  Microtek, respectively, and  that such projections
and forecasts would be realized in  the amounts and time periods then  estimated
by  the managements of Isolyser  and Microtek. Morgan Keegan  was not engaged to
assess the achievability of  such projections or the  assumptions on which  they
were  based and expressed no view as  to such projections or assumptions. Morgan
Keegan was  not  engaged  to, and  did  not  conduct a  physical  inspection  or
appraisal  of any of the assets, properties  or facilities of either Isolyser or
Microtek, nor was  it furnished with  any such evaluation  or appraisal.  Morgan
Keegan  assumed that  the conditions to  the Merger  as set forth  in the Merger
Agreement would be  satisfied; and  that the Merger  would be  consummated on  a
timely  basis in the  manner contemplated by  the Merger Agreement  and that, as
contemplated by the  Merger Agreement, the  Merger would be  accounted for as  a
pooling  of interests.  Morgan Keegan  expressed no opinion  as to  the price or
trading range at which shares of Isolyser Common Stock will trade after the date
of its opinion, or upon completion of the Merger.
 
    In connection with its  presentation to the Isolyser  Board of Directors  on
June  21, 1996 and in preparing its opinion for the Isolyser Board of Directors,
Morgan Keegan  performed  a  variety  of  financial  and  comparative  analyses,
including those described below.
 
    CONTRIBUTION ANALYSIS.  Morgan Keegan analyzed the pro forma contribution of
each  of Isolyser and Microtek to the 1995 and projected 1996 and 1997 operating
results of  a combined  Isolyser  and Microtek.  Morgan Keegan  calculated  that
Microtek  would have  contributed 25.7%, 21.6%  and 16.3% to  pro forma combined
1995, 1996 and 1997 sales;  41.6%, 33.4% and 23.0%  to pro forma combined  1995,
1996, and 1997 gross profit; 100.6%, 40.7% and 23.6% to pro forma combined 1995,
1996 and 1997 operating cash flow; 260.4%, 52.5% and 24.1% to pro forma combined
1995, 1996 and 1997
 
                                       25
<PAGE>
operating  income; and 381.4%, 47.7% and 21.3%  to pro forma combined 1995, 1996
and 1997  net income.  Morgan Keegan  then calculated  the range  of  percentage
ownership   by  Microtek   shareholders  of   the  combined   company  based  on
Determination Prices  between $10.00  and  $15.00 as  from  21.3% to  15.3%  and
concluded  that from Isolyser's shareholders' perspective, Microtek's percentage
contribution to sales, gross profit,  operating cash flow, operating income  and
net  income  of  the combined  company  compares favorably  with  the percentage
ownership of the combined company proposed as transaction consideration.
 
    COMPARABLE COMPANY ANALYSIS.   Morgan Keegan  reviewed and compared  certain
actual  and  forecasted financial,  operating  and stock  market  information of
Microtek  to  seven  publicly  traded  companies  in  the  healthcare   industry
considered  by  Morgan  Keegan to  be  comparable to  Microtek.  These companies
included Arrow International, Inc., Hosposable Products, Inc., Isolyser,  Maxxim
Medical,  Inc., Medex, Inc., Medical Action Industries, Inc., and Tecnol Medical
Products, Inc. Morgan  Keegan calculated  a range  of market  multiples for  the
comparable  companies by  dividing adjusted market  value (market capitalization
based on the closing price  per share on June 20,  1996 plus debt less cash)  by
each  such  company's  sales,  operating cash  flow,  operating  income;  and by
dividing market value by  each such company's net  income, tangible book  value,
and  projected 1996 earnings per share.  This analysis indicated that the median
multiple for sales  was .83x, for  operating cash flow  was 9.9x, for  operating
income was 15.0x, for net income was 31.8x, for tangible book value was 1.9x and
for  earnings per share was 28.9x.  This compared to corresponding multiples for
Microtek for sales  of 2.44x, for  operating cash flow  of 11.5x, for  operating
income  of 14.9x, for net income of 21.6x  and for tangible book value being not
meaningful. Morgan Keegan also calculated ranges of indicative equity values for
Microtek based upon the comparable company multiples, and for Microtek  assuming
a 30% control premium. The median indicative equity values were $14.5 million in
respect of sales, $68.0 million in respect of operating cash flow, $82.3 million
in  respect of operating  income, $111.5 million  in respect of  net income, and
$96.6 million in respect of projected  1996 net income. Morgan Keegan  concluded
that,  based on this analysis, Microtek had an implied equity value range of $68
to $97 million.
 
    MERGERS AND  ACQUISITIONS  TRANSACTION  ANALYSIS.   Morgan  Keegan  reviewed
overall  merger and acquisition activity in the healthcare industry and selected
ten transactions occurring between 1992 and the present with publicly  available
financial  information  to  analyze on  the  basis  of the  purchase  prices and
multiples paid or  proposed consideration  to be paid.  Such analysis  indicated
median  adjusted market values as multiples of latest 12 months sales, operating
cash flow  and operating  income of  0.96x, 9.2x  and 11.3x,  respectively;  and
median market values as multiples of net income and tangible book value of 20.1x
and  3.1x, respectively. Morgan  Keegan applied these  multiples to Microtek and
calculated median indicative equity values of $10.7 million in respect of sales,
$42.8 million in  respect of operating  cash flow, $39.5  million in respect  of
operating  income, $54.3 million in respect of net income, and for tangible book
value being not meaningful. Morgan Keegan also reviewed the premiums paid in the
selected transactions. Such analysis indicated that  the per share value of  the
consideration  paid represented a median premium  of 48.8% over the market price
of the acquired company's common stock four weeks prior to the first trading day
following announcement  of  the transaction.  Applying  this median  premium  to
Microtek  yielded an  indicative equity  value of  $86.6 million.  Morgan Keegan
concluded that, based upon this analysis,  Microtek had implied equity value  in
the range of $40 to $54 million. In Morgan Keegan's judgment, the application of
merger  and  acquisition  transaction  multiples to  the  pro  forma  results of
Microtek's latest 12 months ended February 29, 1996 understates value.
 
    No company or transaction  used in the  comparable companies and  comparable
transactions  analyses  for  comparative  purposes  is  identical  to  Microtek.
Accordingly, an analysis of  the results of  the foregoing necessarily  involves
complex considerations and judgments concerning the differences in financial and
operating  characteristics  of  the companies  and  other  factors. Mathematical
analysis (such  as determining  the average  or  median) is  not, in  itself,  a
meaningful method of using comparable company or transaction data.
 
                                       26
<PAGE>
    DISCOUNTED CASH FLOW ANALYSIS  Morgan Keegan prepared a discounted cash flow
analysis  of the projected free cash flow of Microtek for the years 1996 through
2000, based upon five year projections provided by Microtek's management.  Using
this  information, Morgan Keegan  estimated the net  present value of Microtek's
projected cash flows  by applying discount  rates ranging from  13.0% to  17.0%.
Morgan Keegan also determined the residual value of Microtek by applying a range
of  terminal operating cash flow  multiples of from 7.5x  to 10.5x to Microtek's
projected cash flows and discounting these terminal values using discount  rates
ranging from 13.0% to 17.0%. The sum of the present value of the free cash flows
and  terminal values yielded an implied equity  value range for Microtek of $104
million to $174 million.
 
    PRO FORMA EARNINGS  PER SHARE  ANALYSIS.   Morgan Keegan  also analyzed  the
effect  of the Merger on the financial projections of Isolyser assuming a $16.50
price per share for  Microtek Common Stock.  Isolyser's stand alone  projections
for  1996 and 1997 were compared with the pro forma combined company projections
for earnings per share  and other measures of  profitability. The pro forma  net
income per share figures were then compared to Isolyser's projected earnings per
share  to determine  the degree  of dilution,  if any,  to Isolyser shareholders
subsequent to the Merger. This analysis indicated that the Merger was  accretive
to earnings per share.
 
    The  foregoing summary of Morgan Keegan's presentation and analyses does not
purport to be a complete description of such presentation to the Isolyser  Board
of Directors or of the analyses performed by Morgan Keegan. The preparation of a
fairness  opinion is not necessarily susceptible  to partial analysis or summary
description. Morgan Keegan believes that its analyses and the summary set  forth
above must be considered as a whole and that selecting portions of its analyses,
without  considering all analyses, or of  the above summary, without considering
all factors  and  analyses, would  create  an  incomplete view  of  the  process
underlying  the analyses  presented to the  Isolyser Board of  Directors and its
opinion. In addition, Morgan Keegan may have deemed various assumptions more  or
less probable than other assumptions, so that the ranges of valuations resulting
from  any particular analysis  described above should not  be taken to represent
the actual value of Microtek or the combined company.
 
    In performing its  analyses, Morgan  Keegan made  numerous assumptions  with
respect  to industry performance,  general business and  economic conditions and
other matters, many of which are beyond the control of Isolyser or Microtek. The
analyses performed by  Morgan Keegan  are not necessarily  indicative of  actual
values  or  actual  future results,  which  may  be significantly  more  or less
favorable than suggested by such analyses. Such analyses were prepared solely as
part of Morgan  Keegan's analysis  of the fairness,  from a  financial point  of
view,  to  the shareholders  of  Isolyser of  the  consideration to  be  paid by
Isolyser pursuant to  the Merger  Agreement and were  discussed with  Isolyser's
Board  of Directors at the June 21, 1996 meeting. The analyses do not purport to
be appraisals or to reflect prices at which a company might actually be sold  or
the  prices at which any securities may trade at the present time or at any time
in the future. In addition, as described above, Morgan Keegan's presentation  to
Isolyser's  Board of Directors  and opinion was  one of many  factors taken into
consideration by the Isolyser Board of Directors in making its determination  to
approve the Merger Agreement and the Merger.
 
    In  addition to rendering its opinions, as noted above, Morgan Keegan has in
the past provided investment banking services to Isolyser, for which it received
customary fees. Morgan Keegan was also engaged by Isolyser in February, 1996  to
perform investment banking services and act as financial advisor with respect to
other possible acquisition transactions. In the ordinary course of its business,
Morgan  Keegan  makes a  market  in Isolyser  Common  Stock and  may  trade such
securities for its own account and for  the account of its customers and may  at
any time hold a short or long position in such securities.
 
    Pursuant to an engagement letter with Isolyser, Morgan Keegan has received a
fee  of $300,000 for rendering its opinions with respect to the Merger, and will
receive a fee of $350,000 upon consumation
 
                                       27
<PAGE>
of the Merger in connection with its advisory service. Isolyser has also  agreed
to  reimburse Morgan  Keegan for  its reasonable  out-of-pocket expenses  and to
indemnify Morgan Keegan against certain liabilities, including liabilities under
the federal securities laws.
 
OPINION OF MICROTEK'S FINANCIAL ADVISOR
 
    On March 15, 1996, Goldman Sachs delivered its written opinion to the  Board
of  Directors of  Microtek that, as  of the  date of such  opinion, the Exchange
Ratio pursuant  to the  Original Merger  Agreement was  fair to  the holders  of
shares  of Microtek Common Stock. On June  23, 1996, Goldman Sachs delivered its
written opinion to the Board  of Directors of Microtek that,  as of the date  of
such opinion, the Exchange Ratio pursuant to the Merger Agreement is fair to the
holders of shares of Microtek Common Stock.
 
    THE  FULL TEXT OF THE WRITTEN OPINION  OF GOLDMAN SACHS DATED JUNE 23, 1996,
WHICH SETS FORTH  ASSUMPTIONS MADE,  MATTERS CONSIDERED AND  LIMITATIONS ON  THE
REVIEW UNDERTAKEN IN CONNECTION WITH THE OPINION, IS ATTACHED AS ANNEX C TO THIS
PROXY STATEMENT/PROSPECTUS AND IS INCORPORATED HEREIN BY REFERENCE. STOCKHOLDERS
OF MICROTEK ARE URGED TO, AND SHOULD, READ SUCH OPINION IN ITS ENTIRETY.
 
    In  connection with its opinion, Goldman Sachs reviewed, among other things,
(i) the Merger  Agreement; (ii) the  Annual Reports to  Stockholders and  Annual
Reports  on Form 10-K of  Microtek for the four  fiscal years ended November 30,
1995 and for Isolyser for the year ended December 31, 1995; Forms S-1, effective
October 20, 1994, and November 17, 1995, of Isolyser and the Prospectus utilized
in connection  therewith;  (iii) certain  interim  reports to  stockholders  and
Quarterly  Reports on Form 10-Q of Microtek  and of Isolyser; (iv) certain other
communications from Microtek and Isolyser to their respective stockholders;  and
(v)  certain internal financial analyses and forecasts for Microtek and Isolyser
prepared by their  respective managements. Goldman  Sachs also held  discussions
with  members of the senior management of Microtek and of Isolyser regarding the
past and current business operations, financial condition, and future  prospects
of  their respective companies. In addition, Goldman Sachs reviewed the reported
price and  trading activity  for the  shares of  Microtek Common  Stock and  the
shares  of Isolyser  Common Stock, compared  certain financial  and stock market
information for Microtek and for  Isolyser with similar information for  certain
other  companies  the  securities of  which  are publicly  traded,  reviewed the
financial terms of certain  recent business combinations  in the medical  device
and  hospital supply industry specifically and in other industries generally and
performed such other studies and analyses as it considered appropriate.
 
    Goldman Sachs relied without independent verification upon the accuracy  and
completeness  of all of the  financial and other information  reviewed by it for
purposes of its opinion. In that regard, Goldman Sachs assumed, with the consent
of Microtek,  that  the  financial  forecasts  for  the  Company  and  Isolyser,
including,  without limitation,  projected cost savings  and operating synergies
resulting from the Merger  have been reasonably prepared  on a basis  reflecting
the best currently available judgments and estimates of Microtek and of Isolyser
and  that such financial  forecasts will be  realized in the  amounts and at the
times  contemplated  thereby.  In  addition,  Goldman  Sachs  has  not  made  an
independent evaluation or appraisal of the assets and liabilities of Microtek or
of  Isolyser  or  any of  their  subsidiaries  and Goldman  Sachs  has  not been
furnished with any such evaluation or appraisal. Goldman Sachs assumed, with the
consent of Microtek, that the consummation  of the Merger will be accounted  for
as a pooling of interests under generally accepted accounting principles.
 
    The  following is  a summary  of certain of  the financial  analyses used by
Goldman Sachs in  connection with  providing its written  opinion to  Microtek's
Board  of Directors on  June 23, 1996. Goldman  Sachs utilized substantially the
same type of financial analysis in connection with providing the written opinion
dated March 15, 1996.
 
        (i) INDEXED  COMMON  STOCK PRICE  HISTORY.  Goldman Sachs  reviewed  the
    indexed  historical trading prices  for the shares  of Microtek Common Stock
    during the period since the initial  public offering of Microtek on  October
    6,  1992 as  compared to  the Standard  & Poor's  500 index,  the Standard &
    Poor's Healthcare  index,  the indexed  historical  trading prices  for  the
    shares of
 
                                       28
<PAGE>
    Isolyser  Common  Stock  and  a  composite  index  comprised  of  five other
    comparable  publicly   traded  corporations:   Circon  Corporation,   CONMED
    Corporation,  MAXXIM  Medical,  Inc., Sterile  Concepts  Holdings,  Inc. and
    Tecnol Medical  Products,  Inc.  (the "Selected  Companies").  The  Selected
    Companies  were  chosen  because  they  are  publicly-traded  companies with
    operations that  for  purposes of  analysis  may be  considered  similar  to
    Microtek.
 
        (ii)  SELECTED COMPANIES  ANALYSIS. Goldman Sachs  reviewed and compared
    certain  financial  information  relating   to  Microtek  and  Isolyser   to
    corresponding  financial information, ratios and public market multiples for
    the Selected  Companies.  Goldman  Sachs  calculated  and  compared  various
    financial  multiples and ratios. The multiples of Microtek and Isolyser were
    calculated using a price  of $12.75 per share  of Microtek Common Stock  and
    $11.00 per share of Isolyser Common Stock, the closing prices of such shares
    on  Nasdaq on June 21, 1996  (the last trading day prior  to the date of the
    fairness opinion). The multiples and ratios  for Microtek were based on  the
    most  recently  available  public information  and  information  provided by
    Microtek's management, and the multiples and ratios for Isolyser were  based
    on  the most recently available  public information and information provided
    by Isolyser's  management  and  the  multiples  for  each  of  the  Selected
    Companies were based on the most recent publicly available information. With
    respect  to the Selected Companies,  Goldman Sachs considered levered market
    capitalization (i.e., market  value of common  equity plus estimated  market
    value of debt less cash) as a multiple of last twelve months' ("LTM") sales,
    as  a  multiple of  LTM earnings  before  interest, taxes,  depreciation and
    amortization ("EBITDA") and as  a multiple of  LTM earnings before  interest
    and  taxes ("EBIT"). For fiscal 1995 results, Goldman Sachs' analyses of the
    Selected Companies indicated  levered multiples of  LTM sales, which  ranged
    from  0.8x to 3.4x,  with a mean of  1.9x and a median  of 1.2x, LTM EBITDA,
    which ranged from 7.2x to 13.9x, with a mean of 10.5x and a median of  9.7x,
    and  LTM EBIT, which ranged from 10.7x to  17.5x, with a mean of 14.1x and a
    median of 14.0x,  compared to levered  multiples of 2.5x,  11.5x and  15.0x,
    respectively, for Microtek and a levered multiple of 3.2x sales for Isolyser
    (with  Isolyser's EBITDA  and EBIT  being not  meaningful). For  fiscal 1995
    results, Goldman Sachs also considered for the Selected Companies LTM price/
    earnings multiples ("P/E"), which ranged from 15.2x to 28.2x, with a mean of
    20.9x and a median of 18.1x, compared to 27.1x for Microtek (with Isolyser's
    LTM P/E being  not meaningful); estimated  calendar year 1996  and 1997  P/E
    (provided  by Institutional Brokers Estimate  System ("IBES")), which ranged
    from 12.9x to 20.6x for estimated calendar  year 1996, with a mean of  16.2x
    and  a median of 14.1x, and 10.3x to 16.7x for estimated calendar year 1997,
    with a mean  and a median  of 13.6x,  compared, for Microtek,  to 19.6x  for
    estimated  calendar year 1996 and 9.4x for estimated calendar year 1997 and,
    for Isolyser,  to 68.8x  for  estimated calendar  year  1996 and  15.3x  for
    estimated  calendar year 1997 based on Isolyser's management's estimates and
    to 209.5x for estimated calendar year 1996 and 21.9x for estimated  calendar
    year  1997 based on Morgan Keegan's  estimates; LTM EBITDA margins, LTM EBIT
    margins and LTM net income margins, which ranged from 8.7% to 25.1% for  LTM
    EBITDA  margins, with  a mean of  16.6% and  a median of  13.5%, compared to
    21.3%  for  Microtek   (with  Isolyser's  LTM   EBITDA  margins  being   not
    meaningful),  7.1 to 19.7% for LTM EBIT margins,  with a mean of 12.4% and a
    median of 8.5%,  compared to 16.4%  for Microtek (with  Isolyser's LTM  EBIT
    margins being not meaningful), and 3.3% to 11.3% for LTM net income margins,
    with  a mean  of 6.7% and  a median of  3.9%, compared to  8.4% for Microtek
    (with Isolyser's LTM net income  margins being not meaningful); a  five-year
    compound  annual  growth rate  of earnings  per share  ("EPS") for  the five
    fiscal years ending in 2000  (provided by IBES in  the case of the  Selected
    Companies  and Isolyser, and Microtek management  in the case of Microtek as
    no public estimates were available) ranging from 14.0% to 20.0%, with a mean
    of 17.4% and a median of 18.0%, compared to 42.9% for Microtek and 40.0% for
    Isolyser; net debt to net capitalization ratios, which ranged from (6.0)% to
    48.8%, with a mean  of 28.2% and  a median of 36.1%,  compared to 47.8%  for
    Microtek  and (22.9%) for  Isolyser; and a  ratio of the  1997 estimated P/E
    compared  to   the   IBES   estimated   EPS   growth   rate   ranging   from
 
                                       29
<PAGE>
    0.5x  to 0.9x, with a mean of 0.7x  and median of 0.8x, compared to 0.2x for
    Microtek and 0.4x  for Isolyser based  on Isolyser's management's  estimates
    and 0.5x for Isolyser based on Morgan Keegan's estimates.
 
       (iii)  PRO  FORMA  MERGER  ANALYSIS.  Goldman  Sachs  prepared  pro forma
    analyses of the financial impact of the Merger. Using earnings estimates for
    Microtek and Isolyser prepared by their respective managements for the years
    1996 and 1997, Goldman Sachs compared the EPS of Isolyser Common Stock, on a
    stand alone basis, to the EPS of the common stock of the combined  companies
    on a pro forma basis. Goldman Sachs performed this analysis based on a price
    of $16.50 per share of Microtek Common Stock and a range of per share prices
    from  $10.00 to $15.00 of Isolyser Common Stock as well as a per share price
    of $16.00 (a value outside of the collar) of Isolyser Common Stock under the
    following  two  scenarios:  The  first  scenario  relied  on  the   Isolyser
    managements'  estimates (and Microtek managements' estimates of Microtek net
    income) and combined Microtek and Isolyser as currently existing; the second
    scenario relied  on Morgan  Keegan's  estimates (and  Microtek  managements'
    estimates  of Microtek  net income)  and combined  Microtek and  Isolyser as
    currently existing. Based on such  analyses, the proposed transaction  would
    be accretive to Isolyser's stockholders on an EPS basis in substantially all
    of the above scenarios in the estimated years 1996 and 1997.
 
       (iv) CONTRIBUTION ANALYSIS. Goldman Sachs reviewed certain historical and
    estimated future operating and financial information (including, among other
    things,  revenues;  gross profit;  EBIT; net  income; selling,  general, and
    administration expenses; net debt; and total assets) for Microtek,  Isolyser
    and  the  pro  forma combined  entity  resulting  from the  Merger  based on
    Microtek's managements'  financial  forecasts for  Microtek  and  Isolyser's
    managements'  and Morgan Keegan's financial  forecasts for Isolyser. Goldman
    Sachs analyzed the  relative income statement  contribution of Microtek  and
    Isolyser  to  the combined  companies on  a pro  forma basis.  This analysis
    indicated that Microtek would have contributed 28.5% to combined revenues in
    1995 and an estimated 21.6% in 1996 decreasing to an estimated 9.9% in 2000,
    46.1% to  combined gross  profit in  1995  and an  estimated 34.3%  in  1996
    decreasing  to an estimated  13.5% in 2000, (385.2)%  to combined EBIT (such
    contribution being negative because Isolyser had negative EBIT for 1995)  in
    1995  and an  estimated 52.5%  in 1996 decreasing  to an  estimated 12.7% in
    2000, (424.0)%  to combined  net income  (such contribution  being  negative
    because  Isolyser had negative net income in  1995) in 1995 and an estimated
    47.7% in  1996  decreasing to  an  estimated 12.4%  in  2000, and  32.3%  to
    combined  selling,  general  and  administration  expenses  in  1995  and an
    estimated 26.8% in 1996  decreasing to an estimated  13.2% in 2000.  Goldman
    Sachs  also analyzed the relative balance sheet contribution of Microtek and
    Isolyser to  the combined  companies on  a pro  forma basis.  This  analysis
    indicated  that, based on fiscal year  1995, Microtek would have contributed
    (239.3)% to  combined net  cash (such  contribution being  negative  because
    Isolyser had net cash in 1995) and 17.8% of the total assets to the combined
    entity.
 
        (v)  SELECTED  TRANSACTIONS  ANALYSIS.  Goldman  Sachs  analyzed certain
    information relating  to selected  transactions in  the medical  device  and
    hospital  supply  industry since  1988  (the "Selected  Transactions"). Such
    analysis indicated that for the Selected Transactions (i) levered  aggregate
    consideration  as a multiple of  LTM sales ranged from  0.4x to 2.5x, with a
    mean of 1.2x and a median of 1.1x, (ii) aggregate equity consideration as  a
    multiple  of LTM net income ranged from 20.8x to 50.0x, with a mean of 35.5x
    and a median of 35.1x, (iii)  levered aggregate consideration as a  multiple
    of  LTM EBIT ranged from 7.2x to 32.9x, with a mean of 16.1x and a median of
    13.8x, and (iv)  the percentage premium  paid ranged from  15.7% to  100.0%,
    with a mean of 52.3% and a median of 45.2%.
 
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<PAGE>
       (vi)  ANALYSIS AT  VARIOUS PRICES.  Goldman Sachs  calculated alternative
    values for  the levered  aggregate consideration  and the  aggregate  equity
    consideration  based upon Determination  Price per share  values of Isolyser
    Stock ranging from $10.00 to $20.00 per share of Isolyser Common Stock.
 
          Those  calculations  yielded levered  aggregate  consideration  values
    ranging  from $86.8 million  to $115.8 million  for Microtek, assuming $22.9
    million in net debt, and total  values delivered for each share of  Microtek
    Common Stock ranging from $16.50 to $22.00 per such share. The multiples and
    ratios  for  Microtek  for  actual  1995 were  based  on  public  filings of
    Microtek; for estimated fiscal year 1996, on Microtek's management or, where
    noted, IBES  estimates; and  for estimated  fiscal year  1997 on  Microtek's
    management estimates.
 
           Goldman Sachs  considered  the levered  aggregate consideration  as a
    multiple of actual 1995, LTM through February 29, 1996 and estimated  fiscal
    1996  and  1997  net sales,  EBITDA  and  EBIT of  Microtek.  Goldman Sachs'
    analyses indicated levered aggregate consideration multiples of actual  1995
    net sales that ranged from 3.7x to 4.6x, actual 1995 EBITDA that ranged from
    19.4x  to 24.5x and actual 1995 EBIT that ranged from 25.0x to 31.6x; of LTM
    net sales that ranged from 3.4x to  4.3x, LTM EBITDA that ranged from  16.1x
    to  20.3x and LTM EBIT that ranged  from 20.9x to 26.4x; of estimated fiscal
    1996 net sales that ranged from  2.5x to 3.2x, estimated fiscal 1996  EBITDA
    that  ranged from 10.1x to 12.8x and  estimated fiscal 1996 EBIT that ranged
    from 13.1x to 16.6x; and of estimated fiscal 1997 net sales that ranged from
    2.1x to 2.7x, estimated fiscal 1997 EBITDA that ranged from 7.3x to 9.2x and
    estimated fiscal 1997  EBIT that ranged  from 8.8x to  11.1x. Goldman  Sachs
    also  considered the aggregate equity consideration  as a multiple of actual
    1995 net income  and estimated  fiscal 1996 and  1997 net  income (based  on
    management  estimates)  and 1996  net income  (based  on IBES  estimates) of
    Microtek.
 
        Goldman  Sachs also considered the  aggregate equity consideration as  a
    multiple  of actual 1995, LTM through February 29, 1996 and estimated fiscal
    1996 and 1997 net income  (based on management estimates), estimated  fiscal
    1996  net income (based  on IBES estimates)  and actual 1995  book value per
    share of Microtek Common Stock. Goldman Sachs' analyses indicated  aggregate
    equity  consideration multiples of  actual 1995 net  income of Microtek that
    ranged from 37.6x  to 50.2x; of  LTM net  income that ranged  from 32.2x  to
    42.9x;  of management estimated 1996 net income of Microtek that ranged from
    21.8x to 29.1x; of  IBES estimated 1996 net  income of Microtek that  ranged
    from  29.1x to  38.8x; of management  estimated 1997 net  income of Microtek
    that ranged from 12.9x  to 17.3x; and of  Microtek's actual 1995 book  value
    per share that ranged from 4.1x to 5.5x.
 
       (vii) DISCOUNTED CASH FLOW ANALYSIS. Goldman Sachs performed a discounted
    cash flow analysis based on the Microtek management's estimates for Microtek
    as  currently existing. Goldman Sachs calculated a net present value of free
    cash flows for the years 1996 through 2000 using discount rates ranging from
    14% to 24%. Goldman Sachs calculated Microtek's terminal values in the  year
    2000  based  on multiples  ranging from  2.00x sales  to 3.00x  sales. These
    terminal values were then discounted  to present value using discount  rates
    from 14% to 24%.
 
        Using  the  foregoing  terminal  values and  discounted  cash  flows for
    Microtek, the implied per share values ranged from $9.68 to $23.53.
 
    The preparation  of a  fairness opinion  is  a complex  process and  is  not
necessarily  susceptible to  partial analysis or  summary description. Selecting
portions of the analyses or of the summary set forth above, without  considering
the  analyses  as a  whole, could  create  an incomplete  view of  the processes
underlying Goldman Sachs'  opinion. In arriving  at its fairness  determination,
Goldman  Sachs  considered  the results  of  all  such analyses.  No  company or
transaction used in the above analyses as a comparison is identical to  Microtek
or  Isolyser or the contemplated transaction.  The analyses were prepared solely
for purposes of  Goldman Sachs'  providing its  opinion to  Microtek's Board  of
Directors  as  to the  fairness of  the  Exchange Ratio  pursuant to  the Merger
Agreement to the holders of shares of  Microtek Common Stock and do not  purport
to  be  appraisals or  necessarily  reflect the  prices  at which  businesses or
securities actually may be sold. Analyses based upon forecasts of future results
are not
 
                                       31
<PAGE>
necessarily indicative of actual future results, which may be significantly more
or less favorable  than suggested by  such analyses. Because  such analyses  are
inherently  subject to uncertainty, being based  upon numerous factors or events
beyond the control the parties or  their respective advisors, none of  Microtek,
Isolyser,  Goldman Sachs  or any other  person assumes  responsibility if future
results are materially different from those forecast.
 
    As described above,  Goldman Sachs'  opinion to  the Board  of Directors  of
Microtek  was one of many factors taken into consideration by the Microtek Board
of Directors in making  its determination to approve  the Merger Agreement.  The
foregoing  summary does not purport to be a complete description of the analyses
performed by Goldman Sachs and is qualified by reference to the written  opinion
of Goldman Sachs set forth in Annex C hereto.
 
    Goldman  Sachs, as part  of its investment  banking business, is continually
engaged in the valuation of businesses  and their securities in connection  with
mergers   and  acquisitions,  negotiated  underwritings,  competitive  biddings,
secondary distributions of listed  and unlisted securities, private  placements,
and  valuations  for estate,  corporate  and other  purposes.  Microtek selected
Goldman Sachs as  its financial advisor  because it is  a nationally  recognized
investment  banking firm that has substantial experience in transactions similar
to the Merger.
 
    Goldman Sachs provides  a full  range of financial,  advisory and  brokerage
services  and in the  course of its  normal trading activities  may from time to
time effect transactions  and hold  positions in  the securities  or options  on
securities  of Microtek and/or Isolyser for its  own account and for the account
of customers.
 
    Pursuant to a letter agreement dated  April 15, 1994 (the "First  Engagement
Letter"),  Microtek engaged  Goldman Sachs  to act  as its  financial advisor in
connection with the possible  sale of Microtek. Pursuant  to a letter  agreement
dated  March  14,  1996  (the "Second  Engagement  Letter"),  which  amended and
supplemented the First Engagement Letter, Microtek engaged Goldman Sachs to  act
as its financial advisor in connection with the Merger. Pursuant to the terms of
the  Second Engagement  Letter, Microtek  has agreed  to pay  Goldman Sachs upon
consummation of  the Merger  a transaction  fee of  $1.5 million.  Microtek  has
agreed  to reimburse  Goldman Sachs  for its  reasonable out-of-pocket expenses,
including attorney's  fees,  and  to indemnify  Goldman  Sachs  against  certain
liabilities, including certain liabilities under the federal securities laws.
 
INTEREST OF CERTAIN PERSONS IN THE MERGER
 
    MICROTEK  STOCK OPTIONS.  Each of Messrs.  Lester J. Berry, Kimber L. Vought
and Dan R. Lee (directors and/or executive  officers of Microtek) is a party  to
option  agreements with  Microtek pursuant  to which  he has  options to acquire
shares  of  Microtek  Common  Stock.   See  "Option  Proposal"  for   additional
information  regarding  options  held  by such  individuals.  If  the  Merger is
consummated, Isolyser will  assume all outstanding  options granted by  Microtek
(including  those described above) and such  optionees will then have options to
purchase Isolyser Common Stock. The result  of such assumption will be that  the
exercise price for each of the above-referenced options will likely be less than
the  market price of Isolyser Common Stock,  and that the options, if exercised,
would likely  be more  valuable  immediately after  the  Merger than  they  were
immediately  prior to  the announcement of  the Merger. In  addition, the option
agreements pursuant to which each of the officers, employees and consultants  of
Microtek  is a party  contain change of  control provisions and,  as a result of
those provisions,  all of  the options  held by  the officers  and employees  of
Microtek (including Messrs. Berry, Vought and Lee) will become fully exercisable
upon  consummation  of the  Merger. See  "--  Treatment of  Outstanding Microtek
Options."
 
    EMPLOYMENT OF MICROTEK  DIRECTORS AND  EXECUTIVE OFFICERS.   Messrs.  Berry,
Vought and Lee are expected to remain as employees of Microtek after the Merger.
None  of these individuals, however, has entered  into, and none are expected to
enter into, an  employment agreement with  Isolyser. After the  Merger, each  of
these  individuals will be eligible to participate in benefit plans provided for
the officers of Isolyser and its subsidiaries.
 
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<PAGE>
    INDEMNIFICATION. The  Merger  Agreement  provides  that  (i)  Isolyser  will
indemnify  the present and former officers  and directors of Microtek in certain
circumstances; (ii) Isolyser  will not  amend or  repeal any  provisions of  the
Certificate  of Incorporation  or Bylaws of  Microtek in any  manner which would
adversely  affect  the  indemnification  provisions  contained  in  the   Merger
Agreement; and (iii) for a period of two years from the Effective Date, Microtek
shall  maintain  directors'  and  officers'  liability  insurance  covering  the
directors and officers covered on the date of the Merger Agreement by Microtek's
directors'  and  officers'  liability  insurance  policy  or  cause   Isolyser's
directors'  and  officers' liability  insurance  policy to  cover  such persons,
except that neither Microtek nor Isolyser  shall be required, in the  aggregate,
to  expend in premiums for such insurance an amount greater than double the rate
paid by  Microtek  for the  policy  period  immediately preceding  the  date  of
execution  of  the  Merger Agreement  and  except  that Isolyser  shall  have no
liability or obligation to maintain such  insurance to the extent that any  such
policy  is  not  reasonably  available  on  the  terms  required  by  the Merger
Agreement. See "-- Certain Covenants."
 
    CHANGE OF  CONTROL  PROVISIONS.    Employment  agreements  entered  into  by
Microtek  with  Mr.  Berry, John  N.  Jordan,  the president  of  the Medi-Plast
division of Microtek, and  Joe Prince, the  executive vice president,  corporate
development of Microtek, contain certain change of control provisions which will
come  into  effect upon  consummation  of the  Merger.  In consideration  of Mr.
Berry's agreement  to  delete certain  provisions  in his  employment  agreement
providing  for  certain cash  payments  upon a  change  of control,  Mr. Berry's
employment agreement was amended in January 1994 to provide that Microtek  would
pay  to Mr. Berry a bonus to the extent  he did not receive a profit of $300,000
before taxes on his  stock option to purchase  40,000 shares of Microtek  Common
Stock  at an exercise price of $5.25 per  share in the event of the consummation
of certain  defined  change of  control  transactions which  would  include  the
Merger.  Accordingly, it  would be anticipated  that Mr. Berry  would realize in
excess of $300,000 of profit before taxes if he were able to liquidate his stock
options concurrently with the consummation of  the Merger. Mr. Berry has  agreed
that  the relevant  time to calculate  his profit  on his stock  options for the
purpose of said provisions of his employment agreement is the date of closing of
the Merger, regardless of when he liquidates his options. Each of Messrs. Jordan
and Prince  are parties  to  employment agreements  with Microtek  entered  into
concurrently  with Microtek's acquisition of substantially  all of the assets of
Medi-Plast on November  30, 1995, providing  for a base  salary of $140,000  per
year,  bonuses in  such amounts  as may  be established  by Microtek's  Board of
Directors from time  to time  in its discretion,  insurance (including,  without
limitation,  major  medical, life  and  disability insurance)  and  other fringe
benefits  in  accordance  with  Microtek's  standard  insurance  practices   for
executives  and as may be authorized and  adopted from time to time by Microtek.
In the event either of Messrs. Jordan or Prince elect to resign their employment
within six  months following  the Effective  Date, they  are entitled  to  their
respective  salary, bonus  and other benefits  over the remaining  term of their
respective employment agreements, which expire on November 29, 1998. Microtek is
currently completing separation  agreements with  Messrs. Jordan  and Prince  by
means  of which Microtek and Isolyser anticipate incurring compensation expenses
in  connection  with  the  Merger  approximating  amounts  payable  under   such
employment agreements.
 
EFFECTIVE DATE AND CONSEQUENCES OF THE MERGER
 
    If  approved  by the  requisite  vote of  the  stockholders of  Microtek and
Isolyser, and if  all other  conditions to the  consummation of  the Merger  are
satisfied  or  waived,  the  Merger will  become  effective,  unless  the Merger
Agreement is terminated as provided therein, upon the making of certain  filings
with  the Secretary of State  of the State of  Delaware pursuant to the Delaware
General Corporation  Law  (the "DGCL").  At  the Effective  Date,  the  Isolyser
Subsidiary  will be merged with  and into Microtek, which  will be the surviving
corporation in the Merger, and the separate corporate existence and identity  of
the  Isolyser Subsidiary  will cease.  The corporate  existence and  identity of
Microtek will  continue unaffected  by the  Merger, although  it will  become  a
wholly-owned subsidiary of Isolyser.
 
    It  is currently  contemplated that  the Effective  Date of  the Merger will
occur as  promptly  as practicable  after  the approval  of  the Merger  by  the
Isolyser and Microtek stockholders at the Isolyser
 
                                       33
<PAGE>
and  Microteck Special Meetings,  subject to the  conditions described under "--
Conditions to Merger." Upon completion of  the Merger, each Microtek Share  will
be  converted into the right to receive  the number of Isolyser Shares described
above under "-- General." The directors  of the Isolyser Subsidiary will be  the
directors of Microtek after the Effective Date. The current officers of Microtek
are expected to remain as the officers of Microtek.
 
    In  the  event that  either the  Microtek or  Isolyser stockholders  fail to
approve the  Merger Agreement,  Microtek will  continue to  pursue its  business
strategy,  including seeking suitable acquisition candidates to provide Microtek
with access to new markets and customers.
 
EXCHANGE OF CERTIFICATES REPRESENTING MICROTEK SHARES
 
    Instructions with regard  to the surrender  of Microtek stock  certificates,
together  with a  letter of  transmittal to  be used  for this  purpose, will be
mailed to Microtek stockholders as  promptly as practicable after the  Effective
Date.  In  order to  receive certificates  evidencing  the Isolyser  Shares, the
stockholders of Microtek will be required to surrender their stock  certificates
after  the Effective Date, together with a duly completed and executed letter of
transmittal, to SunTrust Bank, which will  act as Exchange Agent (the  "Exchange
Agent")  in  connection  with the  Merger.  Promptly after  the  Effective Date,
Isolyser will deposit in trust with the Exchange Agent certificates representing
the number of whole Isolyser Shares to which the holders of Microtek Shares  are
entitled  to receive  in the  Merger together  with cash  sufficient to  pay for
fractional shares.  Upon  receipt  of  such stock  certificates  and  letter  of
transmittal,  the Exchange Agent  will issue a  stock certificate evidencing the
Isolyser Shares to  the registered holder  or his transferee  for the number  of
Isolyser  Shares such person is  entitled to receive as  a result of the Merger,
together with cash in lieu of any fractional share. No interest will be paid  or
accrued   on  the  amounts   payable  upon  the   surrender  of  Microtek  stock
certificates.
 
    STOCKHOLDERS OF  MICROTEK SHOULD  NOT SUBMIT  THEIR STOCK  CERTIFICATES  FOR
EXCHANGE UNTIL THE INSTRUCTIONS AND LETTER OF TRANSMITTAL ARE RECEIVED.
 
    If  any certificate  for the  Isolyser Shares  is to  be issued  or any cash
payment for a fractional share is to be  made to a person other than the  person
in  whose name the  certificate for the Microtek  Shares surrendered in exchange
therefor is registered, it will be a condition of such issuance or payment  that
the  stock  certificate so  surrendered be  properly  endorsed and  otherwise in
proper form  for transfer,  and  that the  person  requesting such  issuance  or
payment (i) pay in advance any transfer or other taxes required by reason of the
issuance  of certificates for  the Isolyser Shares or  a check representing cash
for a fractional  share to  a person  other than  the registered  holder of  the
Microtek  stock certificate surrendered or (ii) establish to the satisfaction of
the Exchange Agent that such tax has been paid or is not applicable.
 
    After the Effective Date,  there will be no  further transfers on the  stock
transfer  books  of  Microtek  of  the  Microtek  Shares  that  were outstanding
immediately prior  to the  Effective Date.  If a  certificate representing  such
shares  is  presented for  transfer, subject  to  compliance with  the requisite
transmittal procedures, it will  be cancelled and  exchanged for the  applicable
number of Isolyser Shares and cash for any fractional share amount.
 
    Each  certificate  representing  Microtek Shares  immediately  prior  to the
Effective Date  will, at  the Effective  Date,  be deemed  for all  purposes  to
represent  only the right to receive the  number of whole shares of the Isolyser
Shares (and the right  to receive cash  in lieu of any  fraction of an  Isolyser
Share)  into  which the  Microtek Shares  represented  by such  certificate were
converted in the Merger.
 
    Until a certificate which formerly  represented Microtek Shares is  actually
surrendered  for exchange and received by the Exchange Agent, the holder thereof
will not be entitled to  vote in the holder's name  or receive any dividends  or
other  distributions with respect to Isolyser Common Stock payable to holders of
record after the Effective  Date. Subject to applicable  law, upon surrender  of
Microtek  stock  certificates  such  dividends or  other  distributions  will be
remitted (without  interest)  to  the  record holder  of  certificates  for  the
Isolyser Shares issued in exchange therefor.
 
                                       34
<PAGE>
    Any  certificates for  the Isolyser  Shares and  cash sufficient  to pay for
fractional shares delivered  or made  available to  the Exchange  Agent and  not
exchanged  for Microtek stock certificates within six months after the Effective
Date will be returned by the  Exchange Agent to Isolyser, which will  thereafter
act  as Exchange Agent. None of Isolyser, Microtek or the Exchange Agent will be
liable to a holder of Microtek Shares for any of the Isolyser Shares,  dividends
or other distributions thereon or cash in lieu of fractional shares delivered to
a  public official pursuant to applicable abandoned property, escheat or similar
laws.
 
NO FRACTIONAL SHARES
 
    No fractional shares of Isolyser Common  Stock will be issued in  connection
with  the Merger.  All fractional  shares of  Isolyser Common  Stock to  which a
holder of  Microtek  Shares  immediately  prior  to  the  Effective  Date  would
otherwise  be entitled at the Effective Date will be aggregated. If a fractional
share results from such aggregation,  the Microtek stockholder will be  entitled
to  receive from  Isolyser an  amount in cash  equal to  the Determination Price
multiplied by  the  fraction of  a  share of  Isolyser  Common Stock  which  the
Microtek  stockholder would otherwise have received. Except for such payment, no
Microtek stockholder will be entitled to any dividends or other distributions or
other rights of stockholders with respect to any fractional interest.
 
TREATMENT OF OUTSTANDING MICROTEK OPTIONS
 
    At March 15, 1996, a total of  711,429 shares of Microtek Common Stock  were
reserved  for issuance upon the exercise of options outstanding under the Option
Plan. Isolyser has  agreed to  assume all  of Microtek's  obligations under  the
Option  Plan in  accordance with its  terms and  conditions as in  effect at the
Effective Date, except that (i) all actions to be taken thereunder by the  Board
of  Directors of Microtek or a committee thereof  shall be taken by the Board of
Directors of Isolyser or a committee thereof, (ii) each option shall  thereafter
evidence  the right to purchase only the number of whole Isolyser Shares (to the
nearest whole  share)  which would  have  been  issued if  the  Microtek  Shares
represented  by the option had been outstanding at the Effective Date, (iii) the
exercise price for each share of Isolyser Common Stock issued upon the  exercise
of  options will be  equal to the  option price per  share in effect immediately
prior to the Effective  Date divided by the  Exchange Ratio. In accordance  with
the  terms  of options  outstanding under  the Option  Plan, such  options shall
become immediately exercisable upon the Effective Date.
 
CONDITIONS TO THE MERGER
 
    In addition to customary conditions,  the obligations of Isolyser,  Microtek
and  the  Isolyser  Subsidiary  to  consummate the  Merger  are  subject  to the
satisfaction, or where permitted, waiver of, certain other conditions, including
(a) the absence of any action, suit or proceeding to restrain, modify, enjoin or
prohibit the  carrying  out  of  the transactions  contemplated  by  the  Merger
Agreement; (b) receipt of certain governmental approvals; and (c) the receipt of
officer certificates.
 
    In  addition, Isolyser's obligation  to consummate the  Merger is subject to
various additional conditions, including (a) approval of the Merger Proposal  by
majority  vote of the shares of Isolyser Common Stock voting on such proposal at
the Isolyser  Meeting, (b)  the  absence of  any  material adverse  change  with
respect  to  Microtek,  (c) receipt  of  a satisfactory  letter  from Microtek's
independent  accountants  with  respect  to  certain  financial  information  of
Microtek,  and (d) the  receipt of a  letter from an  independent accountant for
Isolyser dated the Effective Date stating that such firm concurs that the Merger
will  qualify  as  a   pooling-of-interests  transaction,  subject  to   certain
assumptions.
 
    Microtek's  obligation  to  consummate  the  Merger  is  subject  to various
additional conditions,  including  (a)  approval  and  adoption  of  the  Merger
Agreement  by the affirmative vote of a majority of the Microtek Shares; (b) the
authorization for listing on Nasdaq of the  Isolyser Shares to be issued in  the
Merger  and upon the exercise of the Options;  (c) the absence of any stop order
suspending the effectiveness of the Registration Statement or preventing the use
thereof or of any related prospectus; (d) the receipt by Microtek of an  opinion
of  Arnall  Golden &  Gregory,  counsel for  Isolyser,  that subject  to certain
exceptions and assumptions, no gain or  loss will be recognized by the  Microtek
stockholders  as a  result of the  Merger; and  (e) the absence  of any material
adverse change with respect to Isolyser.
 
                                       35
<PAGE>
    Each of Microtek and Isolyser maintain credit facilities with Chemical  Bank
for certain revolving credit and term loans containing covenants prohibiting the
Merger  absent  obtaining the  prior written  consent  of Chemical  Bank. Unless
waived, the obligations of Microtek and Isolyser under the Merger Agreement  are
respectively  conditioned upon procuring such consent. Although each of Microtek
and  Isolyser  anticipate   obtaining  such  consent   based  upon   preliminary
conversations  with Chemical Bank,  there can be no  assurance that such consent
will be  obtained.  In addition,  the  credit facility  maintained  by  Microtek
includes  provisions for  a pre-payment penalty  in the amount  of $480,000 upon
termination of such credit facility at any time prior to November 30, 1996. Each
of Microtek and Isolyser will request that such pre-payment penalty be waived in
connection with this transaction, although there  can be no assurance that  such
pre-payment  penalty,  or other  amounts, will  not  be required  to be  paid in
connection with such credit facilities and the consummation of the Merger.
 
AMENDMENT OF THE MERGER AGREEMENT; WAIVER OF CONDITIONS
 
    The respective Boards of Directors of Isolyser, the Isolyser Subsidiary  and
Microtek  may, by written agreement, at any time before or after the approval of
the Merger Agreement by the Microtek  or Isolyser stockholders (or both),  amend
the Merger Agreement, provided that after such stockholder approval no amendment
or modification may be made that would adversely affect the Microtek or Isolyser
stockholders  or alter or change the number of Isolyser Shares to be received in
exchange  for  the  Microtek  Shares  without  the  further  approval  of   such
stockholders.  A  vote  in  favor  of  the  Merger  by  a  Microtek  or Isolyser
stockholder will  be deemed  to  be authorization  (but  not a  requirement)  of
Microtek's  and  Isolyser's  respective  executive  officers  and  directors  to
terminate or not terminate  the Merger Agreement if  the Determination Price  is
less than $10.00 per share. See "-- Termination of Merger Agreement." Each party
may, to the extent legally permitted, extend the time for the performance of any
of  the  obligations of  any  other party  to  the Merger  Agreement,  waive any
inaccuracies in the representations or  warranties of any other party  contained
in the Merger Agreement, waive compliance or performance by any other party with
any  covenants, agreements or  obligations contained in  the Merger Agreement or
waive the satisfaction  of any condition  that is precedent  to its  performance
under the Merger Agreement.
 
TERMINATION OF MERGER AGREEMENT
 
    The Merger Agreement may be terminated and the Merger abandoned, at any time
prior  to  the Effective  Date,  whether before  or  after the  approval  by the
Microtek or  Isolyser stockholders  (or  both), (i)  by  the mutual  consent  of
Isolyser   and  Microtek;  (ii)  by  Isolyser  if  there  has  been  a  material
misrepresentation or breach of warranty in the representations and warranties of
Microtek made in the Merger  Agreement or there has  been a material failure  by
Microtek  to comply with its obligations  under the Merger Agreement, subject to
certain  exceptions;  (iii)   by  Microtek   if  there  has   been  a   material
misrepresentation or breach of warranty in the representations and warranties of
Isolyser  made in the Merger  Agreement or there has  been a material failure by
Isolyser to comply with its obligations  under the Merger Agreement, subject  to
certain  exceptions; (iv)  by either Isolyser  or Microtek if  all conditions to
that party's obligation  to consummate  the Merger  have not  been satisfied  or
waived  by September 30, 1996, unless such failure of consummation is due to the
failure  of  the  terminating  party  to  perform  or  observe  the   covenants,
agreements,  and conditions  hereof to  be performed or  observed by  it; (v) by
either Isolyser or Microtek if the consummation of the Merger would violate  any
nonappealable  final order, decree or judgment of any court or governmental body
or agency having competent jurisdiction; (vi) by Microtek, if in the exercise of
the good faith judgment of its Board of Directors (which judgment is based  upon
the  advice of independent, outside legal counsel) as to its fiduciary duties to
its stockholders  such  termination is  required  by reason  of  an  Acquisition
Proposal;  (vii) by  Isolyser, if the  Microtek Board of  Directors withdraws or
materially modifies  or  changes  its  recommendation  to  the  stockholders  of
Microtek  to approve the  Merger Agreement and  the Merger; or  (viii) by either
Isolyser or Microtek, if the Average Closing Price is below $10.00 per share.
 
    If the  Average Closing  Price is  below  $10.00 per  share, the  Boards  of
Directors  of  Isolyser or  Microtek may  respectively  and separately  elect to
pursue one of the following alternatives: (i) terminate the Merger Agreement and
abandon  the   Merger,   (ii)   not   terminate   the   Merger   Agreement   and
 
                                       36
<PAGE>
consummate  the Merger at a  fixed Exchange Ratio of  1.6500 Isolyser Shares for
each share of Microtek Common Stock, or (iii) negotiate with the other party  to
increase  or decrease  the Exchange Ratio.  In determining  what alternatives to
follow under these circumstances, the  Isolyser and Microtek Board of  Directors
will  take into  account, consistent with  their fiduciary  duties, all relevant
facts and  circumstances existing  at the  time including,  without  limitation,
whether  Isolyser is prepared or willing to  issue the number of Isolyser Shares
resulting from the Exchange  Ratio, an analysis of  the reasons for the  trading
price  of the Isolyser Common  Stock, the relative value  of the Isolyser Common
Stock compared  to other  health  care common  stocks  in general,  the  factors
considered  by the Isolyser and Microtek  Boards in recommending adoption of the
Merger Agreement  initially  (see "The  Merger  -- Microtek's  Reasons  For  the
Merger"),  and  the  advice of  their  respective financial  advisors  and legal
counsel. By approving the  Merger Agreement, the  Microtek stockholders will  be
deemed  to be authorizing the Isolyser and  Microtek Boards to determine, in the
exercise of  their respective  fiduciary  duties, to  proceed  with any  of  the
alternatives  described above  in the event  the Average Closing  Price is below
$10.00 per share. If, however, the Isolyser and Microtek Boards elects to pursue
alternative (iii),  as described  above, this  Joint Proxy  Statement/Prospectus
will  be recirculated and the Isolyser and Microtek stockholders will be given a
further opportunity  to reconsider  their investment  decision and  the  revised
number  of  shares of  Isolyser  Common Stock  to be  issued  for each  share of
Microtek Common Stock.
 
    If Isolyser or Microtek terminates  the Merger Agreement as provided  above,
there  will be no liability on the part  of any party or its officers, directors
or stockholders, except as described in "-- Fees and Expenses" below.
 
FEES AND EXPENSES
 
    Whether or not the Merger is consummated, all costs and expenses incurred in
connection with the Merger Agreement  and the transactions contemplated  thereby
will  be paid by the party incurring such costs or expenses. Notwithstanding the
foregoing, if (a) Microtek terminates the Merger Agreement because its Board  of
Directors,  in the  exercise of  its good faith  judgment (based  upon advice of
independent,  outside  legal  counsel)  as  to  its  fiduciary  duties  to   its
stockholders determines such termination is required by reason of an Acquisition
Proposal;  (b)  the  Merger  Agreement is  terminated  by  Isolyser  because the
Microtek Board  of Directors  withdraws or  materially modifies  or changes  its
recommendation  to the stockholders of Microtek  to approve the Merger Agreement
and the Merger; or (c) on or  before September 30, 1996, Microtek enters into  a
definitive   agreement  with  respect  to  an  Acquisition  Proposal,  and  such
transaction (including  any  revised  transaction  based  upon  the  Acquisition
Proposal)  is  thereafter consummated  (whether  before or  after  September 30,
1996), then, upon the occurrence of (a), (b) or (c) above, Microtek shall pay to
Isolyser a fee equal to the sum of $2.5 million.
 
CERTAIN COVENANTS
 
    The Merger Agreement provides that Microtek will not directly or  indirectly
(i)  solicit or initiate discussions with or (ii) enter into any negotiations or
agreements with, or furnish any information  that is not publicly available  to,
any third party concerning an Acquisition Proposal involving Microtek; provided,
however,  that Microtek may  take the actions  prohibited by (ii)  above if such
action is taken by, or upon the authority of, the Microtek Board in the exercise
of its  good  faith  judgment  as  to  its  fiduciary  duties  to  the  Microtek
stockholders,  which judgment is  based upon the  written advice of independent,
outside legal  counsel.  Microtek has  agreed  to notify  Isolyser  promptly  in
writing  if  Microtek receives  any inquiries  or proposals  with respect  to an
Acquisition Proposal.
 
    Under the Merger  Agreement, Microtek  is generally obligated  prior to  the
Effective  Date to conduct  its operations in  the ordinary and  usual course of
business consistent  with past  and  current practices,  to notify  Isolyser  of
changes  in the normal course of its business and to refrain from taking certain
actions without the consent of Isolyser, including, among other matters, issuing
stock (subject to  certain exceptions),  declaring dividends,  or entering  into
transactions outside the ordinary course of business.
 
                                       37
<PAGE>
    Microtek and Isolyser have agreed in the Merger Agreement to indemnify after
the  Effective Date  Microtek's current  and former  officers and  directors for
claims made against such persons because they were a director, officer, employee
or agent of Microtek or its subsidiaries  or serving at the request of  Microtek
or  any subsidiary as a director, officer,  employee or agent of another entity;
provided, however, Microtek and  Isolyser will have  no obligation to  indemnify
such  a person (a) if  a court determines (and  such determination becomes final
and non-appealable) that  the indemnification  is prohibited  by law  or (b)  if
Isolyser  asserts that  Microtek breached  a representation  or warranty  in the
Merger Agreement with respect to the  same matters for which indemnification  is
being  sought,  except  if such  person  proves that  he  or she  had  no actual
knowledge of  such breach  at the  Effective Date.  Isolyser will  not amend  or
repeal  any provisions of the Certificate of Incorporation or Bylaws of Microtek
in any  manner  which  would adversely  affect  the  indemnification  provisions
contained  in the Merger Agreement. For a period of two years from the Effective
Date,  Microtek  shall  maintain  directors  and  officers  liability  insurance
covering  the directors and officers covered on the date of the Merger Agreement
by Microtek's  directors'  and officers'  liability  insurance policy  or  cause
Isolyser's  directors' and  officers' liability  insurance policy  to cover such
persons, except that neither Microtek nor Isolyser, shall be required to  expend
in  premiums for such insurance an amount greater than the rate paid by Microtek
for the policy period immediately preceding the date of execution of the  Merger
Agreement  and except  that Isolyser  shall have  no liability  or obligation to
maintain such insurance  to the extent  that any such  policy is not  reasonably
available on the terms required by the Merger Agreement.
 
CERTAIN REGULATORY MATTERS
 
    Consummation  of  the Merger  is conditioned  upon  receipt by  Isolyser and
Microtek of such regulatory and other approvals as are required under applicable
law, including certain approvals from the Commission. Other than these approvals
and the  matters  described  below,  Isolyser  and  Microtek  know  of  no  such
regulatory or other approvals required by law.
 
    Under  the Hart-Scott-Rodino  Antitrust Improvements  Act of  1976 (the "HSR
Act"), certain acquisition transactions, including the proposed Merger, may  not
be  consummated unless  certain information  has been  furnished to  the Federal
Trade  Commission  (the  "FTC")  and  the  Antitrust  Division  of  the  Justice
Department  (the "Antitrust  Division") and certain  waiting period requirements
have expired or been  terminated. In accordance with  the HSR Act, Isolyser  and
Microtek  have  filed Notification  and Report  Forms and  certain supplementary
materials with the Antitrust Division and the FTC for review in connection  with
the  proposed Merger, and all waiting period requirements under the HSR Act have
expired.
 
POTENTIAL RESALES OF ISOLYSER SHARES RECEIVED IN THE MERGER
 
    The Isolyser Shares to be issued to Microtek stockholders in connection with
the Merger will  be freely  transferable under  the Securities  Act, except  for
shares  issued  to any  person who,  at the  time of  the Isolyser  and Microtek
Special Meetings, may be  deemed to be an  "affiliate" of Microtek, Isolyser  or
the Isolyser Subsidiary within the meaning of Rule 145 under the Securities Act.
In  general, affiliates of Microtek, Isolyser or the Isolyser Subsidiary include
any person or entity who controls, is  controlled by or is under common  control
with  Microtek,  Isolyser  or the  Isolyser  Subsidiary. Rule  145,  among other
things, imposes certain restrictions upon  the resale of securities received  by
affiliates in connection with certain reclassifications, mergers, consolidations
or  asset transfers.  The Isolyser  Shares received  by affiliates  of Microtek,
Isolyser or  the  Isolyser Subsidiary  in  the Merger  will  be subject  to  the
applicable resale limitations of Rule 145.
 
    Additionally,  consistent  with the  requirements of  a pooling-of-interests
transaction, affiliates  of  Isolyser  and  Microtek  will  be  restricted  from
disposing of any Isolyser Common Stock for the period beginning 30 days prior to
the  Effective Date  until the publication  of financial  statements by Isolyser
which include at  least 30  days of  post-Merger operating  results. The  Merger
Agreement  provides that Isolyser  shall receive a  written undertaking from the
directors, executive officers and certain  stockholders of Microtek not to  sell
any  Microtek Shares (and Isolyser Shares acquired in the Merger) owned directly
or indirectly by them until after the publication of these post-Merger financial
statements.
 
                                       38
<PAGE>
NASDAQ LISTING OF THE ISOLYSER SHARES
 
    Isolyser will  apply for  listing on  Nasdaq of  the Isolyser  Shares to  be
issued  in connection with the Merger and  upon the exercise of Microtek options
assumed by Isolyser pursuant to the  Merger Agreement. It is expected that  such
shares  shall be approved for listing on  Nasdaq, subject to notice of issuance.
See "-- Conditions to Merger."
 
ACCOUNTING TREATMENT
 
    Isolyser intends to  account for  the business combination  of Isolyser  and
Microtek  in  its financial  statements  by the  pooling-of-interests  method of
accounting. Receipt  by Isolyser  of  a letter  from the  independent  certified
public   accountants  for  Isolyser  confirming   the  appropriateness  of  this
accounting treatment is a condition precedent  to the Merger. Under this  method
of  accounting, as of the Effective Date, the assets and liabilities of Microtek
would be  added to  those of  Isolyser at  their recorded  book values  and  the
stockholders'  equity accounts  of Isolyser  and Microtek  would be  combined in
Isolyser's consolidated balance  sheet. Additionally, all  prior period  balance
sheets  of Isolyser would be restated and combined with those of Microtek in the
same manner. Under  the pooling-of-interests basis  of accounting, revenues  and
expenses  of both Isolyser and  Microtek for all periods  prior to the Effective
Date and for all periods thereafter  are combined and reported as operations  of
the  combined enterprises as if the Merger  had taken place prior to the periods
covered by such consolidated financial statements and to reflect the  accounting
policies of Isolyser. See "-- Conditions to Merger."
 
    The   unaudited  pro  forma  condensed  consolidated  financial  information
contained in this Joint Proxy Statement/Prospectus has been prepared using:  (i)
the pooling-of-interests basis of accounting to account for the Merger, and (ii)
the  purchase accounting basis to  account for Isolyser's completed acquisitions
of White Knight and SafeWaste and Microtek's completed acquisition of Medi-Plast
and Venodyne. Under the  purchase basis of  accounting, an acquiring  enterprise
allocates  the cost  of an  acquired enterprise to  the assets  acquired and the
liabilities assumed based upon their fair values as of the effective date of the
acquisition. The excess, if any, of the cost of the acquired enterprise over the
sum of the amounts assigned to  identifiable assets less liabilities assumed  is
treated  as  goodwill.  Financial  statements issued  after  consummation  of an
acquisition accounted for  as a  purchase would  reflect such  values and  prior
period  financial statements would not be  restated retroactively to reflect the
historical financial position or results of operations of the acquired  company.
See "Summary" and "Pro Forma Condensed Consolidated Financial Information."
 
    The  terms of  the outstanding  Microtek options  provide that  such options
shall become fully exercisable without regard to any vesting criteria  specified
in  such options upon  the occurrence of  the Effective Date.  Such vesting will
result  in  the  elimination  of  certain  performance-based  vesting   criteria
contained  in stock  options issued to  each of  Messrs. Vought and  Lee for the
purchase of 25,000 shares of Microtek Common Stock at an exercise price of $5.75
per share. Applicable accounting standards require that the elimination of  such
vesting criteria be accounted for as compensation expense by Microtek to Messrs.
Vought  and Lee in an amount equal  to the difference between the aggregate fair
market value of  the shares underlying  such stock options  as of the  Effective
Date  and the  aggregate exercise  price set forth  in such  stock options. Such
charges in excess of amounts previously recognized by Microtek through  February
29,  1996 will be  reflected on Isolyser's  consolidated statement of operations
for the period in which the  Effective Date occurs. Other extraordinary  charges
are expected to be recognized and reflected on Isolyser's consolidated statement
of  operations for the period in which  the Effective Date occurs. See "Isolyser
and Microtek Pro Forma Combined Financial Information."
 
CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    It is a  condition to the  obligation of Microtek  to consummate the  Merger
that  Microtek receive an opinion from Arnall, Golden & Gregory, tax counsel for
Isolyser, to the effect that the Merger  will be treated for federal income  tax
purposes   as  a  reorganization  within  the   meaning  of  Section  368(a)  of
 
                                       39
<PAGE>
the Code and no gain or loss will  be recognized by a Microtek stockholder as  a
result  of the Merger with respect to  shares of Microtek Common Stock converted
solely into Isolyser Common Stock. The effects  of any cash received in lieu  of
fractional share interests are discussed below.
 
    Assuming  that certain representations  to be made  by Microtek and Isolyser
are true as  of the  Effective Date,  Arnall, Golden &  Gregory will  be of  the
opinion that the Merger will qualify as a reorganization under the Code with the
consequences  set forth above. The opinion  will be subject to the qualification
that there exists no plan or intention  by the Microtek stockholders to sell  or
otherwise  dispose of fifty percent  (50%) or more of  the Isolyser Common Stock
received by all former  Microtek stockholders in the  Merger. Assuming that  the
Merger  so qualifies, the tax basis of  the Isolyser Shares received by Microtek
stockholders in the Merger will be the same, in each instance, as the tax  basis
of  the Microtek  Shares surrendered in  exchange therefor,  excluding any basis
allocable to fractional share interests in Isolyser Common Stock for which  cash
is  received. In addition, the holding period of the Isolyser Shares received in
the Merger by  Microtek stockholders will  include the period  during which  the
shares  of Microtek  surrendered in exchange  therefor were  held, provided that
such shares  of  Microtek  Common Stock  were  held  as capital  assets  at  the
Effective Date.
 
    Holders  of Microtek Common Stock who receive cash in the Merger as a result
of the rounding off of fractional share interests in Isolyser Common Stock  will
be  treated, in each instance, as having received the fractional share interests
and then as having  sold such interests  for the cash  received. This sale  will
result  in the  recognition of  gain or  loss for  federal income  tax purposes,
measured by the difference between the  amount of cash received and the  portion
of  the basis of the share of Microtek Common Stock allocable to such fractional
share interests. Such gain or loss will  be capital gain or loss, provided  that
such share of Microtek Common Stock was held as a capital asset at the Effective
Date,  and will  be long-term  capital gain  or loss  if such  share of Microtek
Common Stock has been held for more than one year.
 
    THE FOREGOING DISCUSSION IS  INTENDED ONLY AS A  SUMMARY OF CERTAIN  FEDERAL
INCOME  TAX CONSEQUENCES  OF THE MERGER  AND DOES  NOT PURPORT TO  BE A COMPLETE
ANALYSIS OR LISTING OF ALL POTENTIAL TAX EFFECTS RELEVANT TO A DECISION  WHETHER
TO  VOTE  IN  FAVOR  OF  APPROVAL AND  ADOPTION  OF  THE  MERGER  AGREEMENT. THE
DISCUSSION DOES  NOT ADDRESS  THE TAX  CONSEQUENCES THAT  MAY BE  RELEVANT TO  A
PARTICULAR  MICROTEK  STOCKHOLDER  SUBJECT TO  SPECIAL  TREATMENT  UNDER CERTAIN
FEDERAL INCOME  TAX  LAWS,  SUCH  AS DEALERS  IN  SECURITIES,  BANKS,  INSURANCE
COMPANIES,  TAX-EXEMPT ORGANIZATIONS, NON-UNITED STATES PERSONS AND STOCKHOLDERS
WHO ACQUIRED THEIR SHARES  AS COMPENSATION, NOR  ANY CONSEQUENCES ARISING  UNDER
THE LAWS OF ANY STATE, LOCALITY OR FOREIGN JURISDICTION. THE DISCUSSION IS BASED
UPON  THE CODE, TREASURY  REGULATIONS THEREUNDER AND  ADMINISTRATIVE RULINGS AND
COURT DECISIONS AS  OF THE  DATE HEREOF.  ALL OF  THE FOREGOING  ARE SUBJECT  TO
CHANGE  AND  ANY  SUCH  CHANGE  COULD AFFECT  THE  CONTINUING  VALIDITY  OF THIS
DISCUSSION. MICROTEK STOCKHOLDERS ARE  URGED TO CONSULT  THEIR OWN TAX  ADVISORS
CONCERNING  THE FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES OF THE MERGER
TO THEM.
 
NO APPRAISAL RIGHTS
 
    Pursuant to Delaware  law, no holder  of record of  the Microtek Shares  who
objects  to the Merger shall have  appraisal or dissenters' rights in connection
with the Merger. Pursuant to Georgia law, no holder of record of Isolyser Common
Stock who objects  to the Merger  Proposal shall have  appraisal or  dissenters'
rights in connection with the Merger.
 
                                       40
<PAGE>
                             ISOLYSER AND MICROTEK
 
                    PRO FORMA COMBINED FINANCIAL INFORMATION
 
    The  following unaudited pro forma combined financial statements give effect
to the Merger of Isolyser and Microtek under the pooling of interests method  of
accounting.  The unaudited pro forma combined balance sheet as of March 31, 1996
gives effect to the Merger as though  it had been consummated on that date.  The
unaudited  pro forma  combined balance  sheet as  of March  31, 1996  also gives
effect to  Microtek's acquisition  of Venodyne  on  April 27,  1996 as  if  such
acquisition  had occurred on February 29, 1996. The unaudited pro forma combined
statements of operations for  the years ended December  31, 1993, 1994 and  1995
and for the three-months ended March 31, 1996 give effect to the Merger as if it
had occurred at the beginning of the earliest year presented. For the year ended
December  31, 1995, the  unaudited pro forma statement  of operations also gives
effect to Isolyser's acquisitions of SafeWaste on May 31, 1995 and White  Knight
effective  September  1,  1995  and  Microtek's  acquisitions  of  Medi-Plast on
November 30, 1995 and  Venodyne on April  27, 1996 as  if such acquisitions  had
occurred  at the beginning of Isolyser's and Microtek's fiscal years, January 1,
1995 and December 1,  1994, respectively. For the  three-months ended March  31,
1996,  the  unaudited pro  forma statement  of operations  also gives  effect to
Microtek's acquisition  of  Venodyne as  if  such acquisition  had  occurred  at
December  1, 1994. For purposes of  these unaudited pro forma combined financial
statements,  the  balance  sheet  and  statements  of  operations  data  combine
Microtek's  balance  sheet  as  of  February  29,  1996  and  its  statements of
operations for the years ended November  30, 1993, 1994 and 1995,  respectively,
as Microtek's fiscal year ends on November 30.
 
    The  unaudited combined pro forma financial statements have been prepared by
both Isolyser and  Microtek based upon  their respective consolidated  financial
statements  and certain assumptions. Pro forma per share amounts are based on an
assumed Exchange Ratio of one share of  Isolyser Common Stock for each share  of
Microtek Common Stock. The unaudited pro forma combined statements of operations
do not reflect estimated Merger expenses (estimated at approximately $2,750,000)
or  any operating synergies or cost savings which may result from the Merger. In
addition to the  assumptions relating  to the  Merger, the  unaudited pro  forma
combined  statement of operations for  the year ended December  31, 1995 and for
the three-months ended March 31, 1996  also includes assumptions related to  the
amortization of intangibles, depreciation, financing costs, income taxes and the
issuance of common stock resulting from Isolyser's acquisitions of SafeWaste and
White  Knight and Microtek's  acquisitions of Medi-Plast  and Venodyne accounted
for using the purchase method of accounting. See "Isolyser -- Pro Forma Combined
Financial  Information"   and  "Microtek   --  Pro   Forma  Combined   Financial
Information."
 
    The unaudited pro forma combined financial statements also should be read in
conjunction  with  the historical  consolidated  financial statements  and notes
thereto in Isolyser's and  Microtek's separate Annual Reports  on Form 10-K  for
the  year  ended December  31,  1995 and  November  30, 1995,  respectively, and
Quarterly Reports on  Form 10-Q for  the three-months ended  March 31, 1996  and
February   29,  1996,  respectively,  incorporated   by  reference  herein,  the
historical financial  statements  of  SafeWaste and  White  Knight  included  in
Isolyser's  current reports on  Form 8-K filed  with the Commission  on June 15,
1995 and October 3,  1995, respectively, incorporated  by reference herein,  and
the  historical  financial statements  of  Medi-Plast and  Venodyne  included in
Microtek's Annual Report  on Form  10-K for the  year ended  November 30,  1995,
incorporated by reference herein.
 
    The  pro forma  information is not  necessarily indicative  of the operating
results and financial position that would have been reported had the Merger  and
the  SafeWaste, White Knight,  Medi-Plast and Venodyne  acquisitions occurred at
the pro  forma dates  specified,  nor is  it  necessarily indicative  of  future
results.
 
                                       41
<PAGE>
                             ISOLYSER AND MICROTEK
                   UNAUDITED COMBINED PRO FORMA BALANCE SHEET
                                 MARCH 31, 1996
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                            PRO FORMA
                                                                            MICROTEK
                                                                              WITH           PRO FORMA          PRO FORMA
                                                           ISOLYSER         VENODYNE        ADJUSTMENTS          COMBINED
                                                         ------------      -----------      -----------        ------------
                                                                                   (IN THOUSANDS)
<S>                                                      <C>               <C>              <C>                <C>
Current assets:
  Cash and cash equivalents............................  $     45,755      $      667       $        3 (2)     $    46,425
  Accounts receivable, net.............................        18,619           7,222              (89 )(2)         25,691
                                                                                                   (61 )(3)
  Inventories, net.....................................        38,551          11,905               12 (2)          50,468
  Prepaid inventories..................................           973                                                  973
  Deferred income taxes................................         2,393             208                                2,601
  Prepaid expenses and other assets....................         2,194             544                                2,738
                                                         ------------      -----------      -----------        ------------
    Total current assets...............................       108,485          20,546             (135 )           128,896
                                                         ------------      -----------      -----------        ------------
Property and equipment, net............................        58,035           5,581              134 (2)          63,750
Deposits on machinery and equipment....................         3,532                                                3,532
Intangible assets, net.................................        37,102          26,382              240 (2)          63,724
Investments in joint ventures..........................           404             100             (300 )(2)            204
Other assets, net......................................           597                                                  597
                                                         ------------      -----------      -----------        ------------
    Total assets.......................................  $    208,155      $   52,609       $      (61 )       $   260,703
                                                         ------------      -----------      -----------        ------------
                                                         ------------      -----------      -----------        ------------
 
                                           LIABILITIES AND SHAREHOLDERS' EQUITY
 
Current liabilities:
  Bank overdraft.......................................  $      1,889                                          $     1,889
  Accounts payable.....................................        12,455      $    2,887       $      (61 )(3)         15,281
  Accrued compensation.................................         2,463             280                                2,743
  Other accrued liabilities............................         1,531             890            2,750 (5)           5,418
                                                                                                   247 (4)
  Current portion of long term debt....................         1,513           2,500                                4,013
                                                         ------------      -----------      -----------        ------------
    Total current liabilities..........................        19,851           6,557            2,936              29,344
                                                         ------------      -----------      -----------        ------------
Long term debt.........................................         9,899          23,959                               33,858
Deferred income taxes..................................         3,728             231                                3,959
Other liabilities......................................           270                                                  270
                                                         ------------      -----------      -----------        ------------
    Total liabilities..................................        33,748          30,747            2,936              67,431
                                                         ------------      -----------      -----------        ------------
Shareholders' equity:
  Common stock.........................................            31              48              (42 )(6)             37
  Additional paid in capital...........................       181,202          20,214           (1,271 )(6)        200,599
                                                                                                  (454 )(4)
  Retained earnings (deficit)..........................        (4,429)          3,333           (2,750 )(5)         (4,547 )
                                                                                                  (701 )(4)
  Unearned shares -- ESOP..............................                          (420 )                               (420 )
                                                         ------------      -----------      -----------        ------------
                                                              176,804          23,175           (4,310 )           195,669
  Less: shares held in treasury........................        (2,397)         (1,313 )          1,313 (6)          (2,397 )
                                                         ------------      -----------      -----------        ------------
    Total shareholders' equity.........................       174,407          21,862           (2,997 )           193,272
                                                         ------------      -----------      -----------        ------------
Total Liabilities and Shareholders' Equity.............  $    208,155      $   52,609       $      (61 )       $   260,703
                                                         ------------      -----------      -----------        ------------
                                                         ------------      -----------      -----------        ------------
</TABLE>
 
                                       42
<PAGE>
                             ISOLYSER AND MICROTEK
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1993
 
<TABLE>
<CAPTION>
                                                                                            PRO FORMA          PRO FORMA
                                                          ISOLYSER         MICROTEK        ADJUSTMENTS         COMBINED
                                                         -----------      -----------      -----------        -----------
                                                                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                      <C>              <C>              <C>                <C>
Net sales..............................................  $    11,831      $    26,938                         $   38,769
Cost of goods sold.....................................        6,971           13,866                             20,837
                                                         -----------      -----------      -----------        -----------
  Gross profit.........................................        4,860           13,072                             17,932
                                                         -----------      -----------      -----------        -----------
Operating expenses:
  Selling and marketing expenses.......................        2,494            6,988                              9,482
  General and administrative expenses..................        1,227            2,576                              3,803
  Research and development.............................          587              333                                920
  Amortization of intangibles..........................          291            1,067                              1,358
                                                         -----------      -----------      -----------        -----------
    Total operating expenses...........................        4,599           10,964                             15,563
                                                         -----------      -----------      -----------        -----------
Income from operations.................................          261            2,108                              2,369
Interest income........................................          799                                                 799
Interest expense.......................................                          (348)                              (348 )
Other income...........................................                            22                                 22
                                                         -----------      -----------      -----------        -----------
Income before income tax provision and extraordinary
 item..................................................        1,060            1,782                              2,842
Income tax provision...................................          424              775                              1,199
                                                         -----------      -----------      -----------        -----------
Income before extraordinary item.......................  $       636      $     1,007                         $    1,643
                                                         -----------      -----------      -----------        -----------
                                                         -----------      -----------      -----------        -----------
Income before extraordinary item per common and common
 equivalent share......................................  $      0.04      $      0.20                         $     0.07
                                                         -----------      -----------                         -----------
                                                         -----------      -----------                         -----------
Weighted average number of common and common equivalent
 shares outstanding....................................       16,053            5,059           1,619             22,731
                                                         -----------      -----------      -----------        -----------
                                                         -----------      -----------      -----------        -----------
</TABLE>
 
                                       43
<PAGE>
                             ISOLYSER AND MICROTEK
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1994
 
<TABLE>
<CAPTION>
                                                                                            PRO FORMA          PRO FORMA
                                                          ISOLYSER         MICROTEK        ADJUSTMENTS         COMBINED
                                                         -----------      -----------      -----------        -----------
                                                                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                      <C>              <C>              <C>                <C>
Net sales..............................................  $    46,625      $    26,894      $     (136 )(3)    $   73,383
Cost of goods sold.....................................       35,117           14,947      $     (136 )(3)        49,928
                                                         -----------      -----------      -----------        -----------
  Gross profit.........................................       11,508           11,947                             23,455
                                                         -----------      -----------      -----------        -----------
Operating expenses:
  Selling and marketing expenses.......................        7,528            6,572                             14,100
  General and administrative expenses..................        4,161            3,230                              7,391
  Research and development.............................        1,045              201                              1,246
  Amortization of intangibles..........................        1,103              402                              1,505
  Restructuring charge.................................                           140                                140
                                                         -----------      -----------      -----------        -----------
    Total operating expenses...........................       13,837           10,545                             24,382
                                                         -----------      -----------      -----------        -----------
Income (loss) from operations..........................       (2,329)           1,402                               (927 )
Interest income........................................        1,356                                               1,356
Interest expense.......................................         (321)            (373)                              (694 )
                                                         -----------      -----------      -----------        -----------
Income (loss) before income tax provision and
 cumulative effect of change in accounting principle...       (1,294)           1,029                               (265 )
Income tax provision...................................           11              444                                455
                                                         -----------      -----------      -----------        -----------
Income (loss) before cumulative effect of change in
 accounting principle..................................  $    (1,305)     $       585      $                  $     (720 )
                                                         -----------      -----------      -----------        -----------
                                                         -----------      -----------      -----------        -----------
Income (loss) before cumulative effect of change in
 accounting principle per common and common equivalent
 share.................................................  $     (0.11)     $      0.11                         $    (0.03 )
                                                         -----------      -----------                         -----------
                                                         -----------      -----------                         -----------
Weighted average number of common and common equivalent
 shares outstanding....................................       18,684            5,058           1,619             25,361
                                                         -----------      -----------      -----------        -----------
                                                         -----------      -----------      -----------        -----------
</TABLE>
 
                                       44
<PAGE>
                             ISOLYSER AND MICROTEK
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
                                                                              PRO FORMA
                                                                               MICROTEK
                                                    PRO FORMA ISOLYSER           WITH
                                                    WITH SAFEWASTE AND        MEDI-PLAST         PRO FORMA           PRO FORMA
                                                       WHITE KNIGHT          AND VENODYNE       ADJUSTMENTS           COMBINED
                                                    ------------------       ------------       -----------         ------------
                                                                       (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                 <C>                      <C>                <C>                 <C>
Net sales.........................................     $    113,179          $    39,164         $    (599)(3)      $    151,744
Cost of goods sold................................           86,678               20,267              (599)(3)           106,346
                                                         ----------          ------------       -----------         ------------
  Gross profit....................................           26,501               18,897                                  45,398
                                                         ----------          ------------       -----------         ------------
Operating expenses:
  Selling and marketing expenses..................           18,299                7,662                                  25,961
  General and administrative expenses.............            7,993                4,644               139(2)             12,776
  Research and development........................              959                  314                                   1,273
  Amortization of intangibles.....................            3,304                1,065                77(2)              4,446
                                                         ----------          ------------       -----------         ------------
    Total operating expenses......................           30,555               13,685               216                44,456
                                                         ----------          ------------       -----------         ------------
Income (loss) from operations.....................           (4,054)               5,212              (216)                  942
Interest income...................................            2,050                   10                                   2,060
Interest expense..................................           (1,531)              (1,604)                                 (3,135)
Losses of joint ventures..........................             (214)                 (91)              216(2)                (89)
Other income......................................                                     8                                       8
                                                         ----------          ------------       -----------         ------------
Income (loss) before income tax provision
 (benefit)........................................           (3,749)               3,535                                    (214)
Income tax provision (benefit)....................             (400)               1,365                                     965
                                                         ----------          ------------       -----------         ------------
Net income (loss).................................     $     (3,349)         $     2,170         $                  $     (1,179)
                                                         ----------          ------------       -----------         ------------
                                                         ----------          ------------       -----------         ------------
Net income (loss) per common and common equivalent
 share............................................     $      (0.13)         $      0.44                            $      (0.04)
                                                         ----------          ------------                           ------------
                                                         ----------          ------------                           ------------
Weighted average number of common and common
 equivalent shares outstanding....................           25,884                4,927             1,577                32,388
                                                         ----------          ------------       -----------         ------------
                                                         ----------          ------------       -----------         ------------
</TABLE>
 
                                       45
<PAGE>
                             ISOLYSER AND MICROTEK
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
                   FOR THE THREE-MONTHS ENDED MARCH 31, 1996
 
<TABLE>
<CAPTION>
                                                                              PRO FORMA
                                                                               MICROTEK
                                                                                 WITH            PRO FORMA           PRO FORMA
                                                         ISOLYSER              VENODYNE         ADJUSTMENTS           COMBINED
                                                    ------------------       ------------       -----------         ------------
                                                                       (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                 <C>                      <C>                <C>                 <C>
Net sales.........................................     $        31,008       $    10,199         $    (154)(3)      $     41,053
Cost of goods sold................................              23,880             5,171              (154)(3)            28,897
                                                            ----------       ------------       -----------         ------------
  Gross profit....................................               7,128             5,028                                  12,156
                                                            ----------       ------------       -----------         ------------
Operating expenses:
  Selling and marketing expenses..................               4,963             1,874                                   6,837
  General and administrative expenses.............               2,049             1,164                64(2)              3,277
  Research and development........................                 297                34                                     331
  Amortization of intangibles.....................                 807               308                29(2)              1,144
                                                            ----------       ------------       -----------         ------------
    Total operating expenses......................               8,116             3,380                93                11,589
                                                            ----------       ------------       -----------         ------------
Income (loss) from operations.....................                (988)            1,648               (93)                  567
Interest income...................................                 641                                                       641
Interest expense..................................                (229)             (376)                                   (605)
Losses of joint ventures..........................                 (67)              (46)               93(2)                (20)
                                                            ----------       ------------       -----------         ------------
Income (loss) before income tax provision
 (benefit)........................................                (643)            1,226                                     583
Income tax provision (benefit)....................                (266)              496                                     230
                                                            ----------       ------------       -----------         ------------
Net income (loss).................................     $          (377)      $       730         $                  $        353
                                                            ----------       ------------       -----------         ------------
                                                            ----------       ------------       -----------         ------------
Net income (loss) per common and common equivalent
 share............................................     $         (0.01)      $      0.15                            $       0.01
                                                            ----------       ------------                           ------------
                                                            ----------       ------------                           ------------
Weighted average number of common and common
 equivalent shares outstanding....................              30,500             4,991             1,597                37,088
                                                            ----------       ------------       -----------         ------------
                                                            ----------       ------------       -----------         ------------
</TABLE>
 
                                       46
<PAGE>
                             ISOLYSER AND MICROTEK
 
               NOTES TO PRO FORMA COMBINED FINANCIAL INFORMATION
 
(1)  The unaudited  pro forma combined  financial statements give  effect to the
    Merger of Isolyser  and Microtek under  the pooling of  interests method  of
    accounting. The unaudited pro forma combined statement of operations for the
    year ended December 31, 1995 also gives effect to Isolyser's acquisitions of
    SafeWaste  on May 31, 1995 and White  Knight effective September 1, 1995 and
    Microtek's acquisitions of Medi-Plast on  November 30, 1995 and Venodyne  on
    April  27, 1996, as  if such acquisitions  had occurred at  the beginning of
    Isolyser's and  Microtek's fiscal  years, January  1, 1995  and December  1,
    1994, respectively. The unaudited pro forma combined statement of operations
    for  the three months ended  March 31, 1996 also  gives effect to Microtek's
    acquisition of Venodyne as if such  acquisition had occurred at December  1,
    1994.  The unaudited pro  forma combined balance sheet  also gives effect to
    Microtek's acquisition of Venodyne on April 27, 1996 as if such  acquisition
    occurred  on February  29, 1996. For  purposes of these  unaudited pro forma
    combined financial statements, the balance sheet and statement of operations
    data combine  Microtek's balance  sheet  as of  February  29, 1996  and  its
    statements  of operations  for the years  ended November 30,  1993, 1994 and
    1995, and for  the three months  ended February 29,  1996, respectively,  as
    Microtek's fiscal year ends on November 30.
 
(2)  To  consolidate the  accounts  of the  joint  venture between  Isolyser and
    Microtek.
 
(3) To eliminate inter-company trade transactions and balances between  Isolyser
    and Microtek.
 
(4)  Reflects  additional compensation  expense of  $454,000, before  income tax
    benefit of  $173,000,  resulting from  the  accelerated vesting  of  certain
    performance  based stock options  held by certain  officers of Microtek. The
    related stock option agreements provide  for complete vesting upon a  change
    in  control  of  Microtek.  Also  reflects  currently  anticipated severance
    expense of $677,000, before income  tax benefit of $257,000, resulting  from
    the Merger.
 
(5)  Reflects estimated  Merger expenses  of $2,750,000.  These expenses include
    investment banking, legal, accounting and miscellaneous transaction costs of
    the Merger, and are  excluded from the pro  forma statements of  operations.
    Plans for the integration and consolidation of the companies' operations are
    currently being developed, but associated costs are not presently estimable.
    The  accounting  policies utilized  by Isolyser  and Microtek  are currently
    being studied  from a  conformity perspective;  however, the  impact of  any
    potential adjustment is not presently expected to be material.
 
(6) Reflects the assumed issuance of shares of Isolyser's $.001 par value common
    stock  in exchange for all outstanding common shares of Microtek as of March
    31, 1996,  utilizing an  assumed  Exchange Ratio  of 1.32-for-one,  and  the
    assumed  cancellation  of  Microtek  common shares  held  in  treasury. Upon
    consummation of the Merger,  all rights to shares  of Microtek common  stock
    pursuant  to  Microtek issued  stock  options shall  immediately  convert to
    equivalent rights  with  respect  to Isolyser  common  stock  utilizing  the
    assumed Exchange Ratio.
 
                                       47
<PAGE>
                                    ISOLYSER
 
                    PRO FORMA COMBINED FINANCIAL INFORMATION
 
    The  following unaudited pro forma combined  statement of operations for the
year ended December 31, 1995 gives effect to Isolyser's acquisition of SafeWaste
on May 31,  1995 and  of White  Knight effective September  1, 1995  as if  such
acquisitions  had occurred on  January 1, 1995. Both  of these acquisitions have
been accounted for using the purchase method of accounting.
 
    The pro forma  combined financial  statement should be  read in  conjunction
with  the historical consolidated  financial statements of  Isolyser included in
its  Annual  Report  on  Form  10-K  for  the  year  ended  December  31,  1995,
incorporated  by reference  herein, and  the historical  financial statements of
SafeWaste and White Knight  included in Isolyser's current  reports on Form  8-K
filed  with  the Commission  June 15,  1995, as  amended on  July 17,  1995, and
October 3, 1995, respectively, incorporated by reference herein.
 
    The pro forma information is not necessarily indicative of the results  that
would  have been reported had such transactions occurred on January 1, 1995, nor
is it necessarily indicative of future results.
 
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
 
                      FOR THE YEAR ENDED DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
                                                                      INTER-COMPANY        PRO FORMA      PRO FORMA
                      ISOLYSER   SAFEWASTE (1)   WHITE KNIGHT (1)   ELIMINATIONS (2)    ADJUSTMENTS (3)   COMBINED
                      --------   -------------   ----------------   -----------------   ---------------   ---------
                                                  (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                   <C>        <C>             <C>                <C>                 <C>               <C>
Net sales...........  $ 75,414       $ 260           $38,590             $(1,085)                         $113,179
Cost of goods
 sold...............    59,276         224            28,218              (1,085)           $    45(4)      86,678
                      --------      ------          --------             -------            -------       ---------
  Gross profit......    16,138          36            10,372                                    (45)        26,501
                      --------      ------          --------             -------            -------       ---------
Operating expenses:
  Selling and
   marketing
   expenses.........    12,763          67             5,469                                                18,299
  General and
   administrative
   expenses.........     6,038         187             2,019                                   (251)(5)      7,993
  Research and
   development......       959                                                                                 959
  Amortization of
   intangibles......     1,901          10                85                                  1,308(6)       3,304
                      --------      ------          --------             -------            -------       ---------
    Total operating
     expenses.......    21,661         264             7,573                                  1,057         30,555
                      --------      ------          --------             -------            -------       ---------
Income (loss) from
 operations.........    (5,523)       (228)            2,799                                 (1,102)        (4,054)
Interest income.....     3,205           3                                                   (1,158)(7)      2,050
Interest expense....      (830)         (3)           (1,153)                                   455(8)      (1,531)
Equity in losses of
 joint ventures.....      (169)        (28)                                                     (17)(9)       (214)
                      --------      ------          --------             -------            -------       ---------
Income (loss) before
 income tax
 provision
 (benefit)..........    (3,317)       (256)            1,646                                 (1,822)        (3,749)
Income tax provision
 (benefit)..........      (465)                          632                                   (567)(10)      (400)
                      --------      ------          --------             -------            -------       ---------
Net income (loss)...  $ (2,852)      $(256)          $ 1,014             $                  $(1,255)      $ (3,349)
                      --------      ------          --------             -------            -------       ---------
                      --------      ------          --------             -------            -------       ---------
Net loss per common
 and common
 equivalent share...  $   (.11)                                                                           $   (.13)
                      --------                                                                            ---------
                      --------                                                                            ---------
Weighted average
 number of common
 and common
 equivalent shares
 outstanding........    25,575                                                                              25,884(11)
                      --------                                                                            ---------
                      --------                                                                            ---------
</TABLE>
 
                                       48
<PAGE>
                                    ISOLYSER
          NOTES TO UNAUDITED PRO FORMA COMBINED FINANCIAL INFORMATION
 
 (1) Reflects for  the year ended  December 31, 1995,  the historical  operating
    results  of SafeWaste through May 31,  1995, and White Knight through August
    31, 1995.
 
 (2) Eliminates inter-company sales by SafeWaste and White Knight to Isolyser.
 
 (3) Effective September 1, 1995,  Isolyser acquired White Knight. The  purchase
    price  of White Knight included  the payment of $22,500,000  in cash and the
    issuance of $7,000,000 in Isolyser Common Stock to the shareholders of White
    Knight, and the payment  of approximately $1,388,000  in expenses. The  cash
    portion  of  the purchase  price  is also  subject  to certain  closing date
    adjustments, which Isolyser expects to resolve in 1996.
 
    Based on a  purchase price  allocation, White  Knight's historical  accounts
    were  adjusted to reflect  (i) a $1,468,000 increase  in inventories, (ii) a
    $2,943,000 increase in property and equipment, (iii) a $21,512,000  increase
    in  intangible assets, (iv) a net $2,592,000 increase in deferred income tax
    liabilities, resulting from the fact that the tax basis of the acquired  net
    assets  of White Knight will not be adjusted as a result of the acquisition,
    and (iv)  a net  $874,000  increase in  other liabilities.  The  $21,512,000
    adjustment  to  intangible  assets  consisted  of  $4,124,000  allocated  to
    customer lists and  $17,388,000 allocated  to goodwill.  Customer lists  and
    goodwill  are being amortized  using the straight-line method  over 7 and 20
    years, respectively.
 
    Through  borrowings  under  its  credit  facility  and  from  existing  cash
    balances,   Isolyser   repaid  $13,455,000   of  White   Knight's  long-term
    indebtedness, including  $9,276,000 of  revolving credit  borrowings from  a
    bank and $4,179,000 of subordinated notes payable.
 
 (4)  Reflects an increase in  depreciation expense as a  result of the purchase
    price adjustment to property and equipment.
 
 (5) Reflects the  elimination of  salaries and  benefits paid  to employees  of
    White Knight who were terminated and not replaced.
 
 (6) Reflects an increase in amortization expense as a result of the acquisition
    of  SafeWaste and  White Knight. Amortization  of goodwill  arising from the
    SafeWaste  and  White  Knight  acquisitions   is  over  10  and  20   years,
    respectively. Amortization of customer lists is over 5 to 7 years.
 
 (7)  Reflects a net  reduction in interest income  on cash equivalents assuming
    the acquisitions  had  occurred  on  January  1,  1995  and  that  the  cash
    equivalents had been used to fund the acquisitions.
 
 (8)  Reflects a reduction  in interest expense  for approximately $9,276,000 of
    White Knight indebtedness refinanced  under Isolyser's credit facilities  at
    lower effective interest rates.
 
 (9)  Reflects  an additional  expense for  the  amortization of  the difference
    between the value assigned to SafeWaste's investment in a joint venture over
    its share of the underlying equity. This difference is being amortized  over
    5 years.
 
(10)  Adjusts income tax benefit  to reflect the pro  forma effect on income tax
    benefit resulting from the  acquisition of SafeWaste  and White Knight.  The
    pro  forma effective tax  rate differs from the  federal and state statutory
    tax rates due to non-deductible  goodwill amortization expense arising  from
    Isolyser's acquisitions.
 
(11)  Weighted  average common  shares  outstanding is  calculated  assuming the
    acquisitions of SafeWaste and White Knight occurred on January 1, 1995.
 
                                       49
<PAGE>
                                    MICROTEK
                    PRO FORMA COMBINED FINANCIAL INFORMATION
 
    The following unaudited pro forma combined balance sheet as of February  29,
1996  gives effect to  Microtek's April 27,  1996 acquisition of  Venodyne as if
such acquisition had occurred on February 29, 1996. The following unaudited  pro
forma combined statements of operations for the year ended November 30, 1995 and
for  the  three-months  ended  February  29,  1996  gives  effect  to Microtek's
acquisitions of Venodyne on April 27,  1996 and Medi-Plast on November 30,  1995
as  if such  acquisitions had occurred  on December 1,  1994. These acquisitions
have been accounted for using the purchase method of accounting.
 
    The pro forma combined  financial statements should  be read in  conjunction
with  the  historical  consolidated  financial statements  of  Microtek  and the
historical  financial  statements  of   Medi-Plast  and  Venodyne  included   in
Microtek's  Annual Report  on Form  10-K for the  year ended  November 30, 1995,
incorporated by reference herein.
 
    The pro  forma combined  information is  not necessarily  indicative of  the
results  that would have been reported had  such transaction occurred on the pro
forma dates specified, nor is it necessarily indicative of future results.
 
                                       50
<PAGE>
                                    MICROTEK
                   UNAUDITED COMBINED PRO FORMA BALANCE SHEET
                               FEBRUARY 29, 1996
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                         PRO FORMA      PRO FORMA
                                                            MICROTEK   VENODYNE (1)   ADJUSTMENTS (2)   COMBINED
                                                            ---------  -------------  ---------------  -----------
                                                                                (IN THOUSANDS)
<S>                                                         <C>        <C>            <C>              <C>
Current assets:
  Cash....................................................  $     667                                   $     667
  Accounts receivable, net................................      6,269    $     953                          7,222
  Inventories, net........................................     11,595          310                         11,905
  Deferred income taxes...................................        208                                         208
  Prepaid expenses and other assets.......................        522           22                            544
                                                            ---------  -------------                   -----------
    Total current assets..................................     19,261        1,285                         20,546
                                                            ---------  -------------                   -----------
Property and equipment, net...............................      5,394          187                          5,581
Intangible assets, net....................................     21,904          180       $   4,298         26,382
Investment in joint venture...............................        100                                         100
                                                            ---------  -------------       -------     -----------
    Total assets..........................................  $  46,659    $   1,652       $   4,298      $  52,609
                                                            ---------  -------------       -------     -----------
                                                            ---------  -------------       -------     -----------
</TABLE>
 
                      LIABILITIES AND SHAREHOLDERS' EQUITY
 
<TABLE>
<CAPTION>
<S>                                                         <C>        <C>            <C>              <C>
Current liabilities:
  Accounts payable........................................  $   2,747    $     140                      $   2,887
  Accrued compensation....................................        280                                         280
  Other accrued liabilities...............................        830           60                            890
  Current portion of long term debt.......................      2,500                                       2,500
                                                            ---------  -------------                   -----------
    Total current liabilities.............................      6,357          200                          6,557
Long term debt............................................     18,209                    $   5,750         23,959
Deferred income taxes.....................................        231                                         231
                                                            ---------  -------------       -------     -----------
    Total liabilities.....................................     24,797          200           5,750         30,747
Shareholders' equity:
  Common stock............................................         48                                          48
  Additional paid in capital..............................     20,214                                      20,214
  Retained earnings.......................................      3,333                                       3,333
  Unearned shares -- ESOP.................................       (420)                                       (420)
  Parent's equity in division.............................                   1,452          (1,452)             0
                                                            ---------  -------------       -------     -----------
                                                               23,175        1,452          (1,452)        23,175
  Less: shares held in treasury...........................     (1,313)                                     (1,313)
                                                            ---------  -------------       -------     -----------
    Total shareholders' equity............................     21,862        1,452          (1,452)        21,862
                                                            ---------  -------------       -------     -----------
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY................  $  46,659    $   1,652       $   4,298      $  52,609
                                                            ---------  -------------       -------     -----------
                                                            ---------  -------------       -------     -----------
</TABLE>
 
                                       51
<PAGE>
                                    MICROTEK
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
 
                      FOR THE YEAR ENDED NOVEMBER 30, 1995
 
<TABLE>
<CAPTION>
                                                                                                     PRO FORMA    PRO FORMA
                                                         MICROTEK   MEDI-PLAST (1)   VENODYNE (1)   ADJUSTMENTS   COMBINED
                                                         --------   --------------   ------------   -----------   ---------
                                                                       (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                      <C>        <C>              <C>            <C>           <C>
Net sales..............................................  $ 30,059       $5,144          $3,961                     $39,164
Cost of goods sold.....................................    16,276        2,780           1,594         $(383)(3)    20,267
                                                         --------      -------       ------------   -----------   ---------
  Gross profit.........................................    13,783        2,364           2,367           383        18,897
                                                         --------      -------       ------------   -----------   ---------
Operating expenses:
  Selling and marketing expenses.......................     5,471        1,377           1,611          (547)(4)     7,662
                                                                                                        (250)(5)
  General and administrative expenses..................     3,326          807             629          (118)(3)     4,644
  Research and development.............................       168                          146                         314
  Amortization of intangibles..........................       433                                        632(6)      1,065
                                                         --------      -------       ------------   -----------   ---------
    Total operating expenses...........................     9,398        2,184           2,386          (283)       13,685
                                                         --------      -------       ------------   -----------   ---------
Income (loss) from operations..........................     4,385          180             (19)          666         5,212
Interest income........................................                                     10                          10
Interest expense.......................................      (549)         (57)                         (998)(7)    (1,604)
Losses of joint venture................................       (91)                                                     (91)
Other income...........................................         8                                                        8
                                                         --------      -------       ------------   -----------   ---------
Income (loss) before income tax provision (benefit)....     3,753          123              (9)         (332)        3,535
Income tax provision (benefit).........................     1,445                           (3)          (77)(8)     1,365
                                                         --------      -------       ------------   -----------   ---------
Net income (loss)......................................  $  2,308       $  123          $   (6)        $(255)      $ 2,170
                                                         --------      -------       ------------   -----------   ---------
                                                         --------      -------       ------------   -----------   ---------
Net income per common and common equivalent share......  $   0.47                                                  $  0.44
                                                         --------                                                 ---------
                                                         --------                                                 ---------
Weighted average number of common and common equivalent
 shares outstanding....................................     4,927                                                    4,927
                                                         --------                                                 ---------
                                                         --------                                                 ---------
</TABLE>
 
                                       52
<PAGE>
                                    MICROTEK
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
 
                  FOR THE THREE MONTHS ENDED FEBRUARY 29, 1996
 
<TABLE>
<CAPTION>
                                                                                               PRO FORMA           PRO FORMA
                                                          MICROTEK         VENODYNE (1)        ADJUSTMENTS         COMBINED
                                                         -----------      --------------       ----------         -----------
                                                                        (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                      <C>              <C>                  <C>                <C>
Net sales..............................................  $    9,067         $    1,132                            $   10,199
Cost of goods sold.....................................       4,715                456                                 5,171
                                                         -----------           -------                            -----------
  Gross profit.........................................       4,352                676                                 5,028
                                                         -----------           -------                            -----------
Operating expenses:
  Selling and marketing expenses.......................       1,460                469          $    (55)(5)           1,874
  General and administrative expenses..................       1,040                124                                 1,164
  Research and development.............................                             34                                    34
  Amortization of intangibles..........................         265                                   43(6)              308
                                                         -----------           -------               ---          -----------
    Total operating expenses...........................       2,765                627               (12)              3,380
                                                         -----------           -------               ---          -----------
Income from operations.................................       1,587                 49                12               1,648
Interest expense.......................................        (316 )                                (60)(7)            (376 )
Losses of joint venture................................         (46 )                                                    (46 )
                                                         -----------           -------               ---          -----------
Income (loss) before income tax provision..............       1,225                 49               (48)              1,226
Income tax provision (benefit).........................         495                 19               (18)(8)             496
                                                         -----------           -------               ---          -----------
Net income (loss)......................................  $      730         $       30          $    (30)         $      730
                                                         -----------           -------               ---          -----------
                                                         -----------           -------               ---          -----------
Net income per common and common equivalent share......  $     0.15                                               $     0.15
                                                         -----------                                              -----------
                                                         -----------                                              -----------
Weighted average number of common and common equivalent
 shares outstanding....................................       4,991                                                    4,991
                                                         -----------                                              -----------
                                                         -----------                                              -----------
</TABLE>
 
                                       53
<PAGE>
                                    MICROTEK
          NOTES TO UNAUDITED PRO FORMA COMBINED FINANCIAL INFORMATION
 
(1) Reflects  the historical  operating  results of  Medi-Plast for  the  twelve
    months  ended October 30, 1995, the  historical balance sheet of Venodyne as
    of February 24, 1996  and the historical operating  results of Venodyne  for
    the  year ended November  30, 1995 and  the three months  ended February 24,
    1996.
 
(2) On April  27, 1996, Microtek  purchased Venodyne through  the issuance of  a
    $5.75  million  note  payable. The  purchase  price  may be  increased  by a
    contingent payment (not to exceed $1.0 million) based upon the future  gross
    margin  from  the  Company's sale  of  Venodyne products.  Goodwill  of $4.3
    million recorded  in conjunction  with the  acquisition is  being  amortized
    using the straight-line method over 25 years.
 
(3)  Reflects  a  reduction in  rent  expense  as a  result  of  new contractual
    arrangements for facilities leased from the previous owners of Medi-Plast.
 
(4) Reflects a reduction in compensation  expense as a result of new  employment
    contracts  entered into  with certain  Medi-Plast employees  on November 30,
    1995.
 
(5) Reflects  the  elimination of  sales  commissions associated  with  a  sales
    commission  agreement which was terminated  in conjunction with the Venodyne
    acquisition.
 
(6)  Reflects  an  increase  in  amortization   expense  as  a  result  of   the
    acquisitions.  Amortization  of  goodwill arising  from  the  Medi-Plast and
    Venodyne acquisitions is being amortized over 25 years.
 
(7) Reflects an  increase in  interest expense  associated with  debt issued  in
    conjunction with the acquisitions.
 
(8)  Adjusts income tax  expense to reflect  the pro forma  effect on income tax
    expense resulting from the acquisitions, and to record income tax expense on
    the pre-tax earnings  of Medi-Plast. Prior  to the acquisitions,  Medi-Plast
    was  an S Corporation and  accordingly was not subject  to federal and state
    income tax.
 
                                       54
<PAGE>
                  COMPARATIVE RIGHTS OF ISOLYSER SHAREHOLDERS
                           AND MICROTEK STOCKHOLDERS
 
GENERAL
 
    If  the Merger is consummated, holders  of Microtek Common Stock will become
holders of  Isolyser  Common Stock,  and  the  rights of  such  former  Microtek
shareholders  will be governed  by the laws of  the State of  Georgia and by the
Isolyser Articles  of  Incorporation,  as amended  (the  "Isolyser  Articles  of
Incorporation"),  and the Amended and Restated Bylaws of Isolyser (the "Isolyser
Bylaws"). The  rights  of  Isolyser  shareholders  under  the  Georgia  Business
Corporation  Code  ("GBCC"),  the  Isolyser Articles  of  Incorporation  and the
Isolyser  Bylaws  differ  in  certain  respects  from  the  rights  of  Microtek
stockholders  under  the DGCL,  the Microtek  Certificate of  Incorporation (the
"Microtek Certificate of Incorporation") and the Amended and Restated Bylaws  of
Microtek  (the "Microtek Bylaws").  Certain of these  differences are summarized
below. This summary is qualified in its  entirety by reference to the full  text
of  such documents. In addition, the following  summary does not purport to be a
complete statement  of  the rights  of  Isolyser shareholders  under  applicable
Georgia  law  as  compared  with  the  rights  of  Microtek  stockholders  under
applicable Delaware Law. This summary is qualified in its entirety by  reference
to the DGCL and the GBCC.
 
AUTHORIZED CAPITAL STOCK
 
    Isolyser  is authorized to issue up to 100,000,000 shares of Isolyser Common
Stock and  up  to  10,000,000  shares of  Isolyser  Preferred  Stock,  of  which
         shares  of Isolyser  Common Stock and  no shares  of Isolyser Preferred
Stock were issued and outstanding on        , 1996. As of       , 1996,  319,544
shares  of Isolyser Common Stock were held  in treasury. The holders of Isolyser
Common Stock are entitled to  one vote per share on  all matters submitted to  a
vote  of stockholders. Subject to the rights  of any holders of Preferred Stock,
the holders of  shares of  Isolyser Common Stock  are entitled  to receive  such
dividends  as may be declared from time to time by Isolyser's Board of Directors
and are  entitled to  share ratably  in  all assets  of Isolyser  available  for
distribution   to  shareholders  upon  liquidation.  The  Isolyser  Articles  of
Incorporation  authorizes  Isolyser's  Board   of  Directors,  without   further
stockholder approval, to issue Isolyser Preferred Stock and to fix, with respect
to  any  series of  Isolyser  Preferred Stock,  the  dividend rights  and terms,
conversion rights,  voting  rights,  redemption rights  and  terms,  liquidation
preferences,  sinking  funds  and  other  rights,  preferences,  privileges  and
restrictions applicable to each series of Isolyser Preferred Stock issued.
 
    Notwithstanding the foregoing, pursuant to Isolyser's acquisition of MedSurg
Industries, Inc. in December, 1993, certain shareholders of Isolyser holding  in
the aggregate approximately 20% of the outstanding Isolyser Common Stock entered
into  a voting  agreement with MedInvest  Enterprises, Inc.  providing that they
would vote their shares  in favor of Michael  Sahady's election to the  Isolyser
Board  of Directors for  so long as  Mr. Sahady remains  an executive officer of
Isolyser. Mr. Sahady resigned as an  executive officer and director of  Isolyser
on May 24, 1996, and such voting agreement has accordingly expired.
 
    Microtek  is authorized to issue up  to 15,000,000 shares of Microtek Common
Stock and up to 1,705,290 shares of Microtek Preferred Stock, of which
shares  of Microtek Common Stock and no  shares of Microtek Preferred Stock were
issued and outstanding on         , 1996. Of the authorized shares of  Preferred
Stock,  705,290 shares are classified  as Redeemable Convertible Preferred Stock
with no par  value. The  remaining 1,000,000 shares  of Preferred  Stock may  be
issued from time to time in one or more series. Each such series has such rights
as  shall be stated in the resolutions providing for the issuance of such series
of Preferred Stock  by the Board  of Directors. The  holders of Microtek  Common
Stock  are entitled  to one  vote per  share on  all matters  to be  voted on by
Microtek shareholders generally. The holders of Microtek Preferred stock are not
entitled to  receive  dividends  unless  otherwise  provided  by  the  Board  of
Directors.  The holders  of Microtek Common  Stock are entitled  to receive such
dividends as may be declared from time to time by Microtek's Board of  Directors
and  are  entitled to  share ratably  in  all assets  of Microtek  available for
distribution to  stockholders upon  liquidation, subject  to the  rights of  any
holders of Microtek Preferred Stock. Except
 
                                       55
<PAGE>
as  otherwise  required  by  the  DGCL or  resolutions  of  Microtek's  Board of
Directors authorizing the issuance of any class or series of Microtek  Preferred
Stock,  all rights and all voting power  is vested exclusively in the holders of
Microtek Common Stock.
 
ANTI-TAKEOVER PROTECTION
 
    The GBCC generally requires the affirmative vote of a majority of all  votes
entitled  to be cast on the matter, voting as a single group, to approve mergers
and share exchanges. Shareholders of the surviving corporation need not  approve
a  merger if (i) the articles of incorporation of the surviving corporation will
not differ from  its articles before  the merger, (ii)  each shareholder of  the
surviving  corporation  whose  shares were  outstanding  immediately  before the
effective date  of the  merger will  hold the  same number  and type  of  shares
immediately  after  the  merger,  and  (iii)  the  number  and  kind  of  shares
outstanding immediately after  the merger, plus  the number and  kind of  shares
issuable  as a result of the merger, do  not exceed the total number and kind of
shares of the surviving corporation authorized by its articles of  incorporation
immediately  before the merger.  Neither the Isolyser  Articles of Incorporation
nor the  Isolyser  Bylaws contain  a  provision  which alters  the  GBCC  voting
requirements with respect to mergers.
 
    Under  the DGCL, a merger or consolidation generally must be approved by the
affirmative vote of the holders of a  majority of all of the outstanding  shares
of  each constituent corporation. Stockholders of the surviving corporation need
not authorize a merger  if: (i) the  agreement of merger does  not amend in  any
respect the certificate of incorporation of the surviving corporation, (ii) each
share of stock of the surviving corporation outstanding immediately prior to the
effective date of the merger is to be an identical outstanding or treasury share
of  the surviving corporation after the effective  date of the merger, and (iii)
either no shares  of common stock  of the surviving  corporation and no  shares,
securities  or  obligations convertible  into  such stock  are  to be  issued or
delivered under the  plan of merger,  or the authorized  unissued shares or  the
treasury  shares of common  stock of the  surviving corporation to  be issued or
delivered under the plan of merger plus those initially issuable upon conversion
of any other shares, securities or  obligations to be issued or delivered  under
this  plan do  not exceed  20% of the  shares of  common stock  of the surviving
corporation outstanding immediately prior to  the effective date of the  merger.
Neither the Microtek Certificate Incorporation nor the Microtek Bylaws contain a
provision which alters the DGCL voting requirements with respect to mergers.
 
    The  provision of the GBCC concerning "Business Combinations with Interested
Shareholders"  (the  "Business  Combinations  Provision")  generally   prohibits
certain  "resident domestic  (Georgia) corporations" from  entering into certain
business combination transactions with  any "interested shareholder"  (generally
defined   as  any  person  other  than   the  corporation  or  its  subsidiaries
beneficially owning at least 10% of the voting stock of the corporation), unless
(a) the corporation's board  of directors approves  the business combination  or
the  transaction  that  resulted  in  the  interested  shareholder  becoming  an
interested shareholder prior to  the date the  interested shareholder became  an
interested  shareholder; (b) the interested shareholder  acquired 90% or more of
the outstanding  voting stock  of  the corporation  (excluding shares  owned  by
Isolyser's  officers, directors,  affiliates, subsidiaries  and certain employee
stock plans)  as  part of  the  transaction in  which  it became  an  interested
shareholder;  or  (c)  after  the  date  the  interested  shareholder  became an
interested shareholder, it acquired 90% or more of the outstanding voting  stock
of  the corporation (excluding  shares owned by  Isolyser's officers, directors,
affiliates, subsidiaries and certain employee stock plans) and a majority of the
remaining  outstanding  voting  stock  (excluding  shares  owned  by  Isolyser's
officers,  directors, affiliates, subsidiaries and certain employee stock plans)
approved the business combination. A  Georgia corporation's bylaws must  specify
that  all  requirements  of the  Business  Combinations Provision  apply  to the
corporation in  order for  the  Business Combinations  Provision to  apply.  The
Isolyser  Bylaws do contain a provision electing  to be governed by the Business
Combinations Provision.
 
                                       56
<PAGE>
    The GBCC also contains a provision concerning "Fair Price Requirements" (the
"Fair  Price  Provision")  which  imposes  certain  requirements  on   "business
combinations"  of a  Georgia corporation with  any person who  is an "interested
shareholder" of  that  corporation. Under  the  Fair Price  Provision,  business
combinations  with  interested  shareholders  must meet  one  of  three criteria
designed to  protect the  minority  shareholders: (i)  the transaction  must  be
unanimously approved by the "continuing directors" of the corporation (generally
directors  who served prior to the  time the interested shareholder acquired 10%
ownership and who are unaffiliated with the interested shareholder); or (ii) the
transaction must be  approved by two-thirds  of the continuing  directors and  a
majority  of shares held by shareholders  other than the interested shareholder;
or (iii) the terms of the transactions must meet specified fair pricing criteria
and certain other tests.  A Georgia corporation's bylaws  must specify that  all
requirements  of the Fair Price Provision apply  to the corporation in order for
the Fair Price Provision  to apply. The Isolyser  Bylaws do contain a  provision
electing to be governed by the Fair Price Provision.
 
    In  addition to  the DGCL's general  requirements, Section 203  of the DGCL,
"Business Combinations with  Interested Stockholders,"  prohibits a  corporation
that  does not  opt out  of its provisions  from entering  into certain business
combination transactions with  "interested stockholders"  (generally defined  to
include persons beneficially owning 15% or more of the corporation's outstanding
capital stock) unless certain supermajority votes are obtained. Microtek has not
opted out of Section 203 in its Certificate of Incorporation and consequently is
subject  to the restrictions contained in  Section 203. Microtek has represented
to Isolyser that the  provisions of Section 203  are inapplicable to the  Merger
and the transactions contemplated by the Merger Agreement.
 
APPRAISAL RIGHTS
 
    The GBCC grants shareholders the right to dissent and receive payment of the
fair  value of their shares in the event of certain amendments or changes to the
articles of incorporation adversely affecting their shares, or certain  business
transactions,  including certain mergers.  This right is  not available when the
affected shares are listed on a  national securities exchange or held of  record
by  more than 2,000 shareholders  unless (a) the articles  of incorporation or a
resolution  of  the  board  of  directors  approving  the  transaction   provide
otherwise,  or (b) in  a plan of merger  or share exchange,  the holders of such
shares are  required to  accept  anything other  than  shares of  the  surviving
corporation or another publicly held corporation, except for payments in lieu of
fractional  shares. The  Isolyser Articles of  Incorporation do  not modify this
limitation on dissenters' appraisal rights.
 
    Under the DGCL, stockholders have  dissenters' rights similar to the  rights
of  shareholders of Georgia corporations described above. In addition, under the
DGCL, stockholders of corporations being acquired pursuant to a merger have  the
right  to serve  upon the  corporation a written  demand for  appraisal of their
shares when the stockholders receive any form of consideration for their  shares
other  than (a)  shares of  the surviving corporation,  (b) shares  of any other
corporation listed on a national securities  exchange or held of record by  more
than  2,000  shareholders, or  (c)  cash in  lieu  of fractional  shares  or any
combination  thereof.  Stockholders  who  perfect  their  appraisal  rights  are
entitled to receive cash from the corporation equal to the value of their shares
as  established by judicial appraisal.  Corporations may enlarge these statutory
rights by including in their  certificate of incorporation a provision  allowing
appraisal  rights  in  any merger  in  which  the corporation  is  a constituent
corporation. The  Microtek Certificate  of Incorporation  contains no  provision
enlarging such appraisal rights.
 
AMENDMENTS TO CERTIFICATE OR ARTICLES OF INCORPORATION
 
    Under  the GBCC, the board of directors  may adopt certain amendments to the
articles of incorporation, including, among others, amendments to (a) delete the
names and  addresses  of the  initial  directors, initial  registered  agent  or
registered  office, (b) change  each issued and unissued  authorized share of an
outstanding class  of  stock  into a  greater  number  of whole  shares  if  the
corporation  has only shares of that class outstanding, (c) change the corporate
name, (d) extend the corporation's duration if it was incorporated at a time the
law required limited duration, or (e) change
 
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<PAGE>
or eliminate the par value of each  issued and unissued share of an  outstanding
class  if the corporation has  only shares of that  class outstanding. All other
amendments must be approved by the board of directors and by the shareholders by
a majority of  the votes entitled  to be cast  on the amendment  by each  voting
group  entitled to vote on the amendment, with each class voting separately. The
Isolyser Articles of Incorporation do not modify this voting requirement.
 
    The DGCL permits a corporation to amend its certificate of incorporation  so
long  as the amended certificate of incorporation contains only provisions which
would be lawful and proper to insert in an original certificate of incorporation
filed at the time the amendment is filed. Without limiting the general power  of
amendment,  the DGCL specifically allows a  corporation to amend its certificate
of incorporation so as to (a) change  its corporate name, (b) change the  nature
of  its business or its corporate powers and purposes, (c) increase, decrease or
reclassify its  authorized capital  stock, (d)  cancel or  otherwise affect  the
right  of the holders of the shares  of any class to receive accrued, undeclared
dividends, (e) create a new  class of stock, or (f)  change the duration of  the
corporate charter. All amendments must be approved by the board of directors and
the  stockholders by the affirmative vote of a majority of the outstanding stock
entitled to vote thereon, and a majority of the outstanding stock of each  class
entitled  to vote  thereon as a  class. Microtek's  Certificate of Incorporation
does not provide for any super  majority voting requirement with respect to  any
amendment to Microtek's Certificate of Incorporation.
 
AMENDMENTS TO BYLAWS
 
    The  GBCC permits  a corporation's  board of  directors to  amend, repeal or
adopt bylaws,  unless  (a) the  articles  of incorporation  reserve  this  power
exclusively  to the shareholders  or (b) the  shareholders expressly reserve the
power to amend or repeal a  particular bylaw. The shareholders alone may  amend,
repeal  or adopt  bylaws limiting  the authority  of the  board of  directors or
establishing staggered terms for directors. In addition, the board of  directors
may  not amend, repeal or  adopt a bylaw fixing  a greater shareholder quorum or
voting requirement. The Isolyser Bylaws provide that the Board of Directors  has
the  power to alter, amend or repeal the  Bylaws or adopt new Bylaws, but any of
such Bylaws may be altered,  amended or repealed, or  new Bylaws adopted by  the
Shareholders.  The Shareholders  may prescribe that  any Bylaws  adopted by them
shall not be changed by the Board of Directors. Action taken by the Shareholders
with respect to the Bylaws shall be  taken by affirmative vote of a majority  of
such  Shareholders entitled  to elect Directors  and present at  a duly convened
Shareholders' meeting. Action taken  by the Board of  Directors with respect  to
the  Bylaws must  be by  affirmative vote  of a  majority of  all Directors then
holding office.
 
    Under the DGCL, the power to adopt, amend or repeal bylaws rests with  those
stockholders  entitled to vote,  provided that any  corporation's certificate of
incorporation may additionally confer such power upon the directors.  Conferring
the  power to adopt, amend  or repeal bylaws upon  the directors may not divest,
nor limit,  the  stockholders' power  to  adopt,  amend or  repeal  bylaws.  The
Microtek  Certificate of  Incorporation does  not authorize  Microtek's Board of
Directors to adopt, alter,  amend, or repeal the  Microtek Bylaws. The  Microtek
Bylaws  may be amended or repealed at any meeting of stockholders where a quorum
is present; however, notice  of such meeting of  stockholders must disclose  the
substance of the proposed amendment or repeal.
 
PREEMPTIVE RIGHTS
 
    Under  the GBCC, the shareholders of all corporations do not have preemptive
rights except  to the  extent  the articles  of  incorporation so  provide.  The
shareholders   of  corporations  in  existence  on   July  1,  1989  whose:  (i)
shareholders had such rights as of that date; or (ii) articles of  incorporation
have  been restated  or amended  on or after  July 1,  1989, with  notice to the
shareholders that such restatement or amendment would cause the shareholders  of
the  corporation to have preemptive rights,  shall have preemptive rights unless
the  articles  of  incorporation  expressly  provide  otherwise.  Isolyser   was
incorporated   in  1987;  however,  its   articles  of  incorporation  expressly
eliminated preemptive rights. Consequently, holders of shares of Isolyser Common
Stock do not have preemptive rights.
 
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<PAGE>
    The DGCL does not automatically  confer preemptive rights on  stockholders',
therefore,  stockholders  have no  preemptive rights  unless  and except  to the
extent the  corporation's certificate  of  incorporation expressly  grants  such
rights.  The Microtek Certificate of Incorporation  does not contain a provision
expressly  granting  preemptive  rights.  Consequently,  holders  of  shares  of
Microtek capital stock do not have preemptive rights.
 
STOCKHOLDER ACTION WITHOUT MEETING
 
    Under  the GBCC, any action required or permitted to be taken by vote may be
taken without a meeting  by written consent, setting  forth the action so  taken
and  signed by the holders of all of  the shares entitled to vote on the action,
provided that the articles of incorporation may permit action by written consent
of the holders  of less than  all outstanding shares.  The Isolyser Articles  of
Incorporation  do  not contain  a  provision that  permits  action by  less than
unanimous written consent.
 
    Unless a corporation's certificate of incorporation otherwise provides,  the
DGCL  permits any action required to be taken at an annual or special meeting of
stockholders to be taken without a  meeting, without prior notice and without  a
vote,  if a written consent or consents setting forth the action taken is signed
by the holders of outstanding stock having  not less than the minimum number  of
votes  necessary to authorize or take such  action at a meeting where all shares
entitled to vote thereon were present and  voted, and shall be delivered to  the
corporation   in  accordance  with   the  DGCL.  Microtek's   Bylaws  allow  the
stockholders to take action without a meeting if all the stockholders who  would
have been entitled to vote, or less than all such stockholders but not less than
the  holders of a majority of the stock entitled to vote thereon if such meeting
were held,  consent in  writing  to such  corporate  action; provided  that  the
written consent shall be signed by the holders of stock having not less than the
minimum number of votes that would be necessary to take such action at a meeting
at  which all  shares entitled  to vote thereon  were present  and provided that
prompt notice  must be  given to  all stockholders  of the  taking of  corporate
action without a meeting and by less than unanimous consent.
 
STOCKHOLDER ACTION -- QUORUM REQUIREMENT
 
    According  to the GBCC, shares entitled to vote as a separate group may take
action on a  matter at a  meeting only if  a quorum of  those shares exist  with
respect  to that matter. Unless a corporation's articles of incorporation or the
GBCC provides otherwise,  a majority of  the votes  entitled to be  cast on  the
matter  by the voting group constitutes a quorum of that voting group for action
on that matter. The GBCC further provides  that if a quorum exists, action on  a
matter  (other than the election of directors)  by a voting group is approved if
the votes cast within the voting group favoring the action exceed the votes cast
opposing the  action  unless the  GBCC,  the  articles of  incorporation,  or  a
provision  of the bylaws adopted by the shareholders in accordance with the GBCC
or any  successor  statute, requires  a  greater number  of  affirmative  votes.
According   to  the  GBCC,   unless  otherwise  provided   in  the  articles  of
incorporation, directors are elected by a plurality of votes cast by the  shares
entitled  to vote in the election at a meeting at which a quorum is present. The
articles of incorporation or a bylaw  adopted according to the GBCC may  provide
for  a  greater or  lesser  quorum (but  not less  than  one-third of  the votes
entitled to be cast) or a greater voting requirement for shareholders (or voting
groups of shareholders) than is provided for in the GBCC; however, an  amendment
to  the articles of  incorporation or bylaws  that changes or  deletes a greater
quorum or  voting requirement  must  meet the  same  quorum requirement  and  be
adopted  by the same  vote and voting  groups required to  take action under the
quorum and  voting  requirements  prescribed in  the  provision  being  amended.
Neither  the Isolyser Articles  of Incorporation nor  the Isolyser Bylaws modify
the GBCC's  quorum  or  voting  requirements for  shareholder  action.  See  "--
Amendments  to Certificate or  Articles of Incorporation"  and "-- Amendments to
Bylaws."
 
    The DGCL allows a  corporation's certificate of  incorporation or bylaws  to
specify the number of shares and/or the amount of other securities having voting
power  whose holders shall be present or  represented by proxy at any meeting in
order to constitute a quorum for, and the votes that shall be necessary for, the
transaction of any  business, but  requires the quorum  to consist  of at  least
one-third
 
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<PAGE>
of  the shares entitled to  a vote at the  meeting. Absent specifications in the
certificate of incorporation  or bylaws of  the corporation, a  majority of  the
shares  entitled to vote, present in person or represented by proxy, constitutes
a quorum at a stockholders' meeting, and in all matters other than the  election
of  directors, the affirmative vote of a majority of shares present in person or
represented by proxy at the meeting and  entitled to vote will be the action  of
the  stockholders. Directors  are elected  by a  plurality of  the votes  of the
shares present in person or represented by proxy at the meeting and entitled  to
vote  on the election. Where a separate vote  by class or classes is required, a
majority of the outstanding shares of  such class or classes, present in  person
or  represented  by proxy,  constitutes a  quorum entitled  to take  action with
respect to the vote on that matter, and the affirmative vote of the majority  of
shares  of the class or classes present in person or represented by proxy at the
meeting and entitled to vote is the  act of the class. The Microtek  Certificate
of  Incorporation contains  no provisions modifying  the DGCL  quorum and voting
requirements for  stockholder  action.  See "--  Amendments  to  Certificate  of
Articles of Incorporation" and "-- Amendments to Bylaws".
 
ANNUAL MEETING OF STOCKHOLDERS
 
    The  GBCC provides that the corporation shall hold a meeting of shareholders
at a time stated in or fixed in accordance with the bylaws. The Isolyser  Bylaws
state  that the annual meeting of shareholders  will be held following the close
of each fiscal year on the date and  at the time designated, from time to  time,
by Isolyser's Board of Directors.
 
    The DGCL requires a corporation to hold an annual meeting of stockholders to
elect  directors and transact any other proper business as the bylaws designate.
The Microtek Bylaws state that the  annual meeting of stockholders will be  held
on the first Monday in August in each year if not a legal holiday and if a legal
holiday,  then on the next full business days at 11:00 a.m., unless the Board of
Directors provides otherwise.
 
SPECIAL MEETINGS OF STOCKHOLDERS
 
    The GBCC  permits the  board of  directors or  any person  specified in  the
corporation's  articles of incorporation  or bylaws to  call special meetings of
shareholders. A special meeting may  also be called by  the holders of at  least
25%,  or such greater or lesser percentages  as the articles of incorporation or
bylaws provide, of all of the votes entitled to be cast on any issue proposed to
be considered at a special meeting.  The Isolyser Bylaws provide that a  special
meeting may be called only by (a) the Board of Directors; (b) the President; (c)
the  Secretary; (d) two or more Directors; or (e) the holders of at least 25% of
all the votes entitled to be cast on any issue proposed to be considered at  the
special  meeting. The Isolyser  Bylaws require that written  notice of the time,
place and  specific purpose  or purposes  for  which the  meeting is  called  be
delivered  not less  than ten nor  more than sixty  days before the  date of the
meeting, either personally or by first class mail to each shareholder of  record
entitled to vote at such meeting.
 
    Under  the DGCL, special meetings of stockholders may be called by the board
of directors or  those persons  authorized by the  corporation's certificate  of
incorporation  or the bylaws. The Microtek  Bylaws authorize Microtek's Board of
Directors to call a special meeting and provide that a special meeting may  also
be  called by the President,  or by stockholders owning  a majority in amount of
the entire capital  stock of  Microtek. Such  request shall  state the  specific
purpose  or purposes of the  special meeting. Written notice  of the time, place
and specific purposes of such meeting must be given by mail to each  stockholder
entitled to vote at the meeting not less than ten nor more than sixty days prior
to the scheduled date of the special meeting.
 
CUMULATIVE VOTING
 
    Neither the GBCC nor the DGCL grant shareholders the right to cumulate their
votes  for  directors unless  the certificate  or  articles of  incorporation so
provide. Neither  the Microtek  Certificate of  Incorporation nor  the  Isolyser
Articles of Incorporation authorize cumulative voting.
 
NUMBER AND ELECTION OF DIRECTORS
 
    Under  the  GBCC,  a  board  of  directors  must  consist  of  one  or  more
individuals, with the  number specified  in or  affixed in  accordance with  the
articles of incorporation or bylaws. The articles of
 
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<PAGE>
incorporation or bylaws may authorize the shareholders or the board of directors
to  fix or change the number of directors  or may establish a variable range for
the size of the  board of directors  by fixing a minimum  and maximum number  of
directors.  The GBCC  further permits the  articles of incorporation  or a bylaw
adopted by the shareholders to divide  the directors into two or three  classes,
with each class as nearly equal in number as possible. The term of office of one
class  of directors shall expire each year,  and no two classes' terms of office
shall expire in the same year. The  Isolyser Bylaws set the number of  directors
between  three  and  twenty,  with  the  specific  number  to  be  determined by
Isolyser's Board of Directors.
 
    Under the DGCL, the number of directors shall be fixed or determined in  the
manner the bylaws provide, unless the corporation's certificate of incorporation
fixes the number of directors, in which case the number of directors may only be
changed  by  amending the  certificate of  incorporation.  The DGCL  permits the
certificate of incorporation or bylaws to divide the directors into one, two  or
three  classes, with the term of office of one class of directors to expire each
year and the terms of office of no two classes to expire during the same year.
 
    The Microtek Bylaws currently set the  number of directors at no fewer  than
five  and no more than nine, with Microtek's Board of Directors or shareholders,
at any annual or special meeting, to fix the exact number. Moreover, any holders
of Microtek  Preferred  Stock  issued  in the  future  will  have  those  rights
regarding  the  election  of  directors  as are  fixed  by  Microtek's  Board of
Directors at that time. Currently, the Board consists of seven members.
 
REMOVAL OF DIRECTORS
 
    Under the GBCC, except as the articles of incorporation otherwise provide, a
corporation's shareholders may remove  any director, with  or without cause,  by
the  vote  of  the  holders of  a  majority  of the  outstanding  shares  of the
corporation entitled to vote. The GBCC permits the articles of incorporation  or
a  bylaw  adopted  by  the  shareholders to  govern  the  removal  of directors.
Directors elected to staggered terms may  be removed only for cause, unless  the
articles  of  incorporation  or  a bylaw  adopted  by  the  shareholders provide
otherwise. Neither  the  Isolyser Articles  of  Incorporation nor  the  Isolyser
Bylaws alter the provisions of the GBCC with respect to removal of directors.
 
    The  DGCL  permits any  director  or the  entire  board of  directors  to be
removed, with  or without  cause, by  the holders  of a  majority of  the  stock
entitled  to  vote  for directors,  except  (a)  if the  corporation's  board of
directors is classified, stockholders of the corporation may only effect removal
for cause unless the certificate of incorporation otherwise provides; or (b)  if
the corporation's board of directors is voted for cumulatively, if less than the
entire  board is to be removed, no director  may be removed without cause if the
votes cast  against  his  removal would  be  sufficient  to elect  him  if  then
cumulatively voted at an election of the entire board of directors, or, if there
be classes of directors, at an election of the class of directors of which he is
a  part. The Microtek Bylaws allow for the removal of any director or the entire
board of directors, with  or without cause,  at any time by  the holders of  the
majority of the shares then entitled to vote an election of directors.
 
INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
    Under  the GBCC, a corporation may indemnify  any director or officer made a
party to a proceeding if such director or officer acted in a manner he  believed
in  good faith to be in or not  opposed to the best interests of the corporation
and, in the case of any criminal proceeding, had no reasonable cause to  believe
his  conduct  was unlawful.  A corporation  may  not indemnify  a director  in a
derivative proceeding, or in a proceeding by or in the right of the corporation,
in which the director  is adjudged liable to  the corporation, or in  connection
with  any  other proceeding  in  which he  is adjudged  liable  on the  basis he
improperly received  a personal  benefit. The  corporation may  not indemnify  a
director  unless a determination is made that he has met the applicable standard
of conduct. The corporation  is required to indemnify  a director to the  extent
that  the  director has  been successful,  on  the merits  or otherwise,  in the
defense of any proceeding  to which he was  a party because of  his status as  a
director of the corporation. The GBCC also provides that a company's Articles of
Incorporation  or a  Bylaw or agreement  approved by shareholders  may provide a
director with additional indemnification without
 
                                       61
<PAGE>
regard to certain  of the  aforementioned limitations. The  Isolyser Bylaws,  as
approved  by  Isolyer's  shareholders,  provide  that  Isolyser's  directors and
officers will be indemnified to the  fullest extent permitted and in the  manner
required under the GBCC.
 
    The  DGCL  allows corporations  to  indemnify their  directors  and officers
against civil and criminal  liabilities incurred if  the directors and  officers
acted  in  good faith  and in  a  manner the  directors and  officers reasonably
believed to be in or not opposed to the best interests of the corporation,  and,
with  respect to any criminal action, if they had no reasonable cause to believe
their conduct was unlawful.  The Microtek Certificate  of Incorporation and  the
Microtek   Bylaws  provide  that  Microtek's  directors  and  officers  will  be
indemnified to the fullest  extent permitted and in  the manner required by  the
DGCL.
 
LIMITATION OF PERSONAL LIABILITY OF DIRECTORS
 
    Under  the  GBCC,  the  articles of  incorporation  may  limit  a director's
personal liability to the corporation  or its shareholders for monetary  damages
for  breach of the duty of care or other  duty as a director, except (a) for any
appropriation, in violation of  his duties, of any  business opportunity of  the
corporation,  (b)  for acts  or omissions  involving the  director's intentional
misconduct or a knowing violation of law, (c) for unlawful distributions of  the
corporation's  assets,  or  (d)  for any  transaction  from  which  the director
received an  improper personal  benefit. No  such provision  shall eliminate  or
limit a director's liability for any act or omission occurring prior to the date
the provision becomes effective.
 
    The Isolyser Articles of Incorporation limit a director's personal liability
to Isolyser or its shareholders for monetary damages for breaches of the duty of
care or the director's other duties to the extent permissible under the GBCC.
 
    The DGCL allows a corporation's certificate of incorporation to eliminate or
limit a director's personal liability to the corporation or its stockholders for
monetary  damages for the director's breach of his fiduciary duty as a director.
However, the corporation may not eliminate  or limit a director's liability  (a)
for  any breach  of the  director's duty  of loyalty  to the  corporation or its
stockholders, (b)  for acts  or omissions  not in  good faith  or which  involve
intentional  misconduct  or a  knowing  violation of  law,  (c) for  an unlawful
payment of dividends or an unlawful stock purchase or redemption or (d) for  any
transaction  from which the  director derived any  improper personal benefit. No
provision may retroactively eliminate or limit a director's liability.
 
    The Microtek  Certificate  of  Incorporation limits  a  director's  personal
liability  to  Microtek or  its stockholders  for monetary  damages to  the full
extent permitted by the DGCL, and states that any repeal or modification of  the
DGCL  provision  will be  prospective only,  and will  not adversely  affect any
limitation on the  personal liability  existing at or  before the  time of  such
repeal or modification applicable to any Microtek director.
 
                                OPTION PROPOSAL
 
    In  1990, Microtek established the Option Plan to encourage the ownership of
Microtek Common  Stock by  Microtek  employees. All  employees are  eligible  to
participate  in  the Option  Plan, subject  to length  of service  criteria. The
intention of Microtek in administering the  Option Plan is to provide  employees
with  an ongoing incentive to increase earnings and productivity, to acknowledge
superior service  contributions  by employees  and  to recognize  promotions  of
employees.  Each option granted pursuant to  the Option Plan intended to qualify
as an incentive stock option under Section 422 of the Code must have an exercise
price equal to the fair market value of the Microtek Common Stock on the date of
grant. All other options  may be granted  at such exercise  prices as the  Board
shall  determine.  Pursuant to  the November  1995 recommendation  of Microtek's
Compensation Committee, the Microtek Board  amended the Option Plan, subject  to
the  approval of the Microtek stockholders, to  increase the number of shares of
Microtek Common  Stock subject  to the  plan from  883,302 shares  to  1,083,302
shares  (the  "Option  Proposal").  Approval  of  this  amendment  requires  the
affirmative vote of  the holders of  a majority  of the shares  of Common  Stock
represented at the Special Meeting. THE
 
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<PAGE>
BOARD  OF DIRECTORS RECOMMENDS A VOTE "FOR"  APPROVAL OF THE OPTION PROPOSAL. As
of the date of the Microtek Board resolution to recommend the Option Proposal to
the Microtek Stockholders, the members of the Microtek Board beneficially  owned
in  excess of 50% of the shares of Common Stock to be represented at the Special
Meeting and have advised  Microtek that they  will vote in  favor of the  Option
Proposal.
 
    As of March 15, 1996 (and provided the Option Proposal is approved), options
to  purchase an  aggregate of  930,597 shares of  Microtek Common  Stock (net of
options cancelled) had  been granted  pursuant to  the Option  Plan, options  to
purchase  219,168  shares had  been exercised  and  options to  purchase 711,429
shares remained  outstanding.  As  a  result, no  shares  remain  available  for
additional  option grants under the Option Plan; however, options to purchase an
additional 47,295 shares of Common Stock have been granted, subject to obtaining
stockholder approval of the Option Proposal. If the Merger Agreement is approved
by the  Microtek  stockholders and  the  Merger is  consummated,  no  additional
options will be granted under the Option Plan. In addition, the Merger Agreement
prohibits the further grant of options by Microtek prior to the Merger.
 
    As  of March  15, 1996,  the following  executive officers  had been granted
options under the Option Plan in the amounts indicated: Kimber L. Vought,  Chief
Executive  Officer, 204,005 shares (including  options to purchase 22,045 shares
granted subject  to  stockholder approval);  Dan  R. Lee,  Vice  President-Chief
Operating  and Financial Officer, 208,300 shares  and Lester J. Berry, Executive
Vice President, 50,000 shares.
 
    The following discussion  addresses certain anticipated  federal income  tax
consequences  to recipients of awards made under the Option Plan. It is based on
the Code and  interpretations thereof as  in effect  on the date  of this  Proxy
Statement/Prospectus.
 
    An  optionee  to  whom  a  nonqualified stock  option  is  granted  will not
recognize income as a result of the grant of the option. However, upon  exercise
of the nonqualified stock option, the optionee will generally recognize ordinary
compensation income equal to the excess, if any, of the fair market value of the
shares  received pursuant to  exercise of the option  (the "Option Shares") over
the exercise price. Taxation will  be deferred until the  date of exercise of  a
nonqualified  stock option,  subject to  certain exceptions,  if either  (i) the
Option Shares are subject to restrictions  imposed by the Committee which  could
result in a substantial risk of their forfeiture or (ii) the optionee is subject
to  the forfeiture provisions of  Section 16(b) of the  Exchange Act, unless, in
either event, the optionee  makes an election pursuant  to Section 83(b) of  the
Code  (an "83(b) Election"), within 30 days  of receipt of the Option Shares, to
be taxed on the date  of receipt of the Option  Shares. If no 83(b) Election  is
made,  the optionee will recognize ordinary  compensation income at the time the
Option Shares are no longer subject to  such restrictions or the optionee is  no
longer  subject to Section  16(b) liability as  a result of  the transfer of the
Option Shares, in  an amount  equal to  the excess of  the value  of the  Option
Shares  at such time over the amount paid for them. The optionee's tax basis for
the Option Shares will be equal to the exercise price paid by the optionee  plus
the  amount includable in  the optionee's gross income  as compensation, and the
optionee's holding period  for the Option  Shares will commence  on the date  on
which the Option Shares are acquired.
 
    An  optionee to whom an incentive stock option which qualifies under Section
422 of the Code is  granted generally will not recognize  income at the time  of
grant of the Incentive Stock Option or at the time of its exercise. However, the
excess  of  the fair  market  value of  the Shares  subject  to the  option (the
"Incentive Shares") over the  exercise price of  the option at  the time of  its
exercise  is  an  adjustment  to taxable  income  in  determining  an optionee's
alternative minimum taxable  income and ultimately  his alternative minimum  tax
(AMT).  As a result, this  adjustment could cause the  optionee to be subject to
AMT or increase the optionee's AMT liability.
 
    If an optionee who has exercised an incentive stock option does not sell the
Incentive Shares until more than one year after exercise and more than two years
after the date of grant, such optionee will normally recognize long term capital
gain or loss equal to the difference,  if any, between the selling price of  the
Incentive  Shares and  the exercise price.  If the optionee  sells the Incentive
Shares before
 
                                       63
<PAGE>
the time periods expire (a "disqualifying disposition") he or she will recognize
ordinary compensation income equal to the lesser of (i) the difference, if  any,
between  the fair market value  of the Incentive Shares  on the date of exercise
and the exercise price of the option,  and (ii) the difference, if any,  between
the selling price for the Incentive Shares and the exercise price of the option.
Any  other gain or loss on such sale  will normally be capital gain or loss. The
tax basis of  the Incentive Shares  to the optionee,  for purposes of  computing
such  other gain or loss,  should be equal to the  exercise price paid (plus, in
the case of an early disposition, the amount includable in the optionee's  gross
income as compensation, if any).
 
    With  respect  to  either nonqualified  or  incentive stock  options,  if an
optionee delivers shares of the issuing  company's common stock in part or  full
payment  of the option price,  the optionee generally will  be treated as having
exchanged such  shares for  an equivalent  number of  the shares  received  upon
exercise  of the  option (the "Exchange  Shares"), and  no gain or  loss will be
recognized with respect to the shares  surrendered to the company in payment  of
the  option price. In  such a case,  the optionee will  have a tax  basis in the
Exchange Shares which is the same as  the optionee's tax basis in the shares  of
stock  delivered in payment  of the option price.  The remaining Shares received
upon exercise of the option (other than  the Exchange Shares) will, in the  case
of  nonqualified stock options, have a tax  basis equal to the income recognized
on the exercise of the option plus  any cash consideration paid by the  optionee
pursuant  to the  exercise of  the option,  and in  the case  of incentive stock
options, will have  a tax  basis equal  to any  cash consideration  paid by  the
optionee pursuant to the exercise of the option.
 
    The  discussion set forth above  is intended only as  a summary and does not
purport to be a  complete enumeration or analysis  of all potential tax  effects
relevant  to  recipients  of  awards  under  the  Option  Plan.  It  is strongly
recommended that all award recipients consult their own tax advisors  concerning
the  federal, state  and local income  and other tax  considerations relating to
such awards and rights  thereunder. In particular, it  is recommended that  each
award recipient consult his or her own tax advisor as to the AMT consequences of
an  award, the special tax considerations for  an award recipient who is subject
to Section  16(b),  whether it  would  be beneficial  to  make a  Section  83(b)
Election,  whether to exchange shares in order  to exercise an option, and as to
any state tax consequences relating to awards under the Option Plan.
 
    The Option Plan  may establish  for officers  and directors  of Microtek  an
exemption  from the  provisions of  Section 16(b)  of the  Exchange Act  for the
grants of options. Section  16(b) provides for recovery  by Microtek of  profits
made  by officers and directors on short-term  trading in shares of common stock
of Microtek. Grants of options to purchase common stock under the Option Plan by
officers and employee-directors of Microtek may be entitled to an exemption from
the operation of Section  16(b), provided certain conditions  are met under  the
rules and regulations of the Commission.
 
    The  following table sets forth certain  information with respect to options
which have been granted subject to  stockholder approval pursuant to the  Option
Plan to the following:
 
                             AMENDED PLAN BENEFITS
 
<TABLE>
<CAPTION>
NAME AND POSITION                                                                               NUMBER OF OPTIONS
- ----------------------------------------------------------------------------------------------  ------------------
<S>                                                                                             <C>
Kimber L. Vought                                                                                        22,045
Dan R. Lee                                                                                                   0
Lester J. Berry                                                                                              0
Executive Group                                                                                         22,045
Non-Executive Director Group                                                                                 0
Non-Executive Officer Employee Group                                                                    25,250
</TABLE>
 
    The  exercise price  of all  options referenced  above was  set at  the fair
market value of the Microtek Common Stock on the date of grant.
 
                                       64
<PAGE>
                                 LEGAL MATTERS
 
    The validity  of  the  shares of  Isolyser  Common  Stock to  be  issued  in
connection  with the Merger is being passed upon for Isolyser by Arnall Golden &
Gregory, Atlanta, Georgia.
 
                                    EXPERTS
 
    The consolidated financial  statements and the  related financial  statement
schedule  of Isolyser as of December 31, 1994 and 1995 and for each of the three
years in the  period ended December  31, 1995 incorporated  in this joint  proxy
statement/prospectus by reference from Isolyser's Annual Report on Form 10-K for
the  year ended December  31, 1995 have  been audited by  Deloitte & Touche LLP,
independent auditors,  as  stated  in  their report  which  is  incorporated  by
reference  herein and have been  so incorporated in reliance  upon the report of
such firm given upon their authority as experts in accounting and auditing.
 
    The consolidated financial statements  of Microtek as  of November 30,  1994
and  1995, and for each of the years in the three-year period ended November 30,
1995 have been incorporated by reference  herein in reliance upon the report  of
KPMG Peat Marwick LLP, independent certified public accountants, incorporated by
reference  herein, and upon the authority of  such firm as experts in accounting
and auditing.
 
    The financial statements of Medi-Plast as of December 31, 1993 and 1994  and
for  each of the years in the two-year  period ended December 31, 1994 have been
incorporated in this joint proxy  statement/prospectus by reference in  reliance
upon   the  report  of  Olin  J.  Harrell,  CPA,  independent  certified  public
accountant, incorporated by reference herein, in reliance upon the authority  of
such accountant as an expert in accounting and auditing.
 
    The  statement  of divisional  assets,  liabilities and  parent's  equity of
Venodyne as  of February  24, 1996,  and the  related statements  of  divisional
income and cash flows for the 11 month period then ended, have been incorporated
in  this  joint proxy  statement/prospectus by  reference  in reliance  upon the
report of Wolf & Company, P.C., independent auditors, incorporated by  reference
herein, in reliance upon the authority of such firm as experts in accounting and
auditing.
 
    The  consolidated financial  statements of White  Knight as  of December 31,
1993 and 1994 and for each of the years in the three-year period ended  December
31,  1994, and  the statements  of operations  and accumulated  deficit and cash
flows of CliniTech (a  former division of Sterile  Concepts) for the year  ended
September  30, 1992 and for the period from October 1, 1992 to February 8, 1993,
incorporated in this joint proxy statement/prospectus by reference to Isolyser's
Current Report on Form 8-K  filed with the Commission  on October 3, 1995,  have
been  so incorporated  in reliance  upon the reports  of KPMG  Peat Marwick LLP,
independent certified public accountants, and upon the authority of said firm as
experts in accounting and auditing.
 
    The financial statements of  SafeWaste as of December  31, 1994 and for  the
year  then  ended  incorporated  in  this  joint  proxy  statement/prospectus by
reference from Isolyser's Current Report on  Form 8-K filed with the  Commission
on  June 15, 1995 have been audited  by Ernst & Young LLP, independent auditors,
as stated in their report, which  is incorporated by reference herein, and  have
been  so incorporated in reliance upon the  report of such firm given upon their
authority as experts in accounting and auditing.
 
                            STOCKHOLDERS' PROPOSALS
 
    If the  Merger does  not occur,  Microtek  will have  an annual  meeting  of
stockholders  in late 1996. If an annual  meeting of Microtek stockholders is to
occur in 1996, any proposals from stockholders to be presented for consideration
for inclusion in the proxy material in connection with such annual meeting  must
be  submitted in accordance with the rules of the Commission and received by the
Secretary of Microtek at  Microtek's principal executive  offices no later  than
the close of business on September 30, 1996.
 
                                       65
<PAGE>
                                                                         ANNEX A
 
                          AGREEMENT AND PLAN OF MERGER
 
                                     AMONG
 
                             ISOLYSER COMPANY, INC.
                            (A GEORGIA CORPORATION)
 
                                MMI MERGER CORP.
                            (A DELAWARE CORPORATION)
 
                                      AND
 
                             MICROTEK MEDICAL, INC.
                            (A DELAWARE CORPORATION)
 
                             Dated: March 15, 1996
                           As Amended: June 23, 1996
<PAGE>
    This  Agreement and Plan of Merger (the "Agreement") is made and dated as of
the 15th day of March, 1996,  and is amended as of  the 23rd day of June,  1996,
among Isolyser Company, Inc., a Georgia corporation ("ICI"); MMI Merger Corp., a
Delaware  corporation (the "Merger  Corp."), which is  wholly owned, directly or
indirectly, by ICI; and Microtek Medical, Inc., a Delaware corporation ("MMI").
 
    In consideration of  the mutual covenants  and agreements contained  herein,
the parties hereto covenant and agree as follows:
 
                                   ARTICLE 1.
                                   THE MERGER
 
    1.1.  MERGER.  In accordance with the provisions of the business corporation
laws  of the State of Delaware, at  the Effective Date (as hereinafter defined),
Merger Corp. shall  be merged  (the "Merger")  into MMI,  and MMI  shall be  the
surviving  corporation (the "Surviving Corporation")  and as such shall continue
to be governed by the laws of the State of Delaware.
 
    1.2.  CONTINUING  OF CORPORATE EXISTENCE.   Except as  may otherwise be  set
forth  herein,  the  corporate  existence  and identity  of  MMI,  with  all its
purposes, powers, franchises, privileges, rights and immunities, shall  continue
unaffected  and  unimpaired  by  the Merger,  and  the  corporate  existence and
identity of Merger Corp., with all its purposes, powers, franchises, privileges,
rights and immunities, at the Effective Date shall be merged with and into  that
of  MMI, and the Surviving  Corporation shall be vested  fully therewith and the
separate corporate existence and identity of Merger Corp. shall thereafter cease
except to the extent continued by statute.
 
    1.3.  EFFECTIVE DATE.  The Merger shall become effective upon the occurrence
of the  filing of  the certificate  of merger  (the "Effective  Date") with  the
Secretary  of State  of the State  of Delaware  on the Closing  Date (as defined
herein) pursuant  to the  provisions  of the  Delaware General  Corporation  Law
("DGCL").
 
    1.4.  CORPORATE GOVERNMENT.
 
        (a) The Certificate of Incorporation of Merger Corp, as in effect on the
    Effective  Date, shall continue  in full force  and effect and  shall be the
    Certificate of Incorporation of the Surviving Corporation.
 
        (b) The Bylaws of Merger Corp., as  in effect as of the Effective  Date,
    shall  continue in  full force  and effect  and shall  be the  Bylaws of the
    Surviving Corporation.
 
        (c) The members of the Board  of Directors of the Surviving  Corporation
    shall  be  the  persons holding  such  offices  in Merger  Corp.  as  of the
    Effective Date, and the officers of  the Surviving Corporation shall be  the
    persons holding such offices in MMI as of the Effective Date.
 
    1.5.   RIGHTS AND  LIABILITIES OF THE SURVIVING  CORPORATION.  The Surviving
Corporation shall have the following rights and obligations:
 
        (a) The  Surviving Corporation  shall have  all the  rights,  privileges
    immunities and powers and shall be subject to all the duties and liabilities
    of a corporation organized under the laws of the State of Delaware.
 
        (b)   The  Surviving  Corporation  shall  possess  all  of  the  rights,
    privileges immunities and franchises, of either a public or private  nature,
    of  MMI and Merger Corp. and all property, real, personal and mixed, and all
    debts due on  whatever account,  including subscription to  shares, and  all
    other  choses in action, and every other  interest of or belonging or due to
    MMI and Merger Corp. shall be taken and deemed to be transferred or invested
    in the Surviving Corporation without further act or deed.
 
                                      A-1
<PAGE>
        (c) At the Effective Date,  the Surviving Corporation shall  thenceforth
    be  responsible and  liable for all  liabilities and obligations  of MMI and
    Merger Corp. and any  claim existing or action  or proceeding pending by  or
    against  Merger Corp.  or MMI  may be  prosecuted as  if the  Merger had not
    occurred, or  the Surviving  Corporation may  be substituted  in its  place.
    Neither  the rights of creditors  nor any liens upon  the property of Merger
    Corp. or MMI shall be impaired by the Merger.
 
    1.6.   CLOSING.   Consummation  of  the transactions  contemplated  by  this
Agreement  (the "Closing") shall  take place at  the offices of  Arnall Golden &
Gregory in Atlanta, Georgia, commencing at  10:00 a.m., local time, on the  date
(i)  on which the Special Meetings of  MMI's and ICI's stockholders described in
Section 5.8 occur or (ii) as soon as possible thereafter when each of the  other
conditions  set forth  in Articles 6  and 7  have been satisfied  or waived, and
shall proceed promptly to conclusion, or at  such other place, time and date  as
shall  be fixed by  mutual agreement between ICI  and MMI. The  day on which the
Closing shall occur is referred to herein as the "Closing Date." Each party will
cause to be  prepared, executed and  delivered the Certificate  of Merger to  be
filed  with the  Secretary of  State of Delaware  and all  other appropriate and
customary documents as any party or  its counsel may reasonably request for  the
purpose  of consummating  the transactions  contemplated by  this Agreement. All
actions taken at the Closing shall  be deemed to have been taken  simultaneously
at the time the last of any such actions is taken or completed.
 
    1.7.   TAX CONSEQUENCES.  It is  intended that the Merger shall constitute a
reorganization within the meaning of Section 368(a)(1)(A), by virtue of  Section
368(a)(2)(E), of the Internal Revenue Code of 1986, as amended (the "Code"), and
that this Agreement shall constitute a "plan of reorganization" for the purposes
of Section 368 of the Code.
 
    1.8.   POOLING OF INTERESTS.  It is the intention of the parties hereto that
the Merger will  be treated  for financial reporting  purposes as  a pooling  of
interests.
 
                                   ARTICLE 2.
                   CONVERSION OF SHARES; TREATMENT OF OPTIONS
 
    2.1.   CONVERSION OF SHARES.   The manner and  basis of converting shares of
the common stock, $.01 par  value, of MMI (the  "MMI Common Stock") into  Common
Stock, $.001 par value, of ICI ("ICI Common Stock"), shall be as follows:
 
        (a)  Except as provided in  Section 2.3, each share  of MMI Common Stock
    which shall be outstanding immediately prior to the Effective Date shall  at
    the  Effective Date, by virtue  of the Merger and  without any action on the
    part of the  holder thereof,  be converted into  the right  to receive  such
    number  of shares of ICI Common Stock (such number, computed to four decimal
    places, being referred to herein as the "Exchange Ratio") as is equal to the
    quotient obtained by dividing (i)  $16.50 by (ii) the "Determination  Price"
    (as  such term is defined  hereinafter) of a share  of ICI Common Stock. For
    the purposes of this  Agreement, the term  "Determination Price" shall  mean
    the  average per  share closing price  (the "Average Closing  Price") of ICI
    Common Stock as reported on The Nasdaq Stock Market ("NMS") over the  twenty
    (20)  trading days immediately preceding the  fifth trading day prior to the
    Effective Date; provided, however, that in  the event that at the  Effective
    Date  the Average Price of  a share of ICI Common  Stock is less than $10.00
    per share, then the Determination Price shall be deemed to have been $10.00;
    and provided, further,  that in  the event that  at the  Effective Date  the
    Average  Price of a share of ICI Common Stock is more than $15.00 per share,
    then the Determination Price shall be deemed to be $15.00.
 
        (b) Each share of MMI Common Stock held in the treasury of MMI and  each
    share  of  MMI  Common  Stock  owned  by  ICI  or  any  direct  or  indirect
    wholly-owned subsidiary of ICI or of MMI shall automatically be canceled and
    extinguished without any conversion thereof and no payment will be made with
    respect thereto.
 
                                      A-2
<PAGE>
        (c) Each share of Common Stock,  $.001 par value, of Merger Corp.  which
    shall  be outstanding immediately  prior to the Effective  Date shall at the
    Effective Date, by virtue of the Merger  and without any action on the  part
    of  the holder  thereof, be  converted into  one share  of newly  issued MMI
    Common Stock.
 
    2.2.  FRACTIONAL SHARES.  No scrip or fractional shares of ICI Common  Stock
shall  be  issued  in the  Merger,  nor  will any  outstanding  fractional share
interest entitle the owner thereof to vote, to receive dividends or to  exercise
any  other right of  a stockholder of the  Surviving Corporation. All fractional
shares of ICI Common  Stock to which  a holder of  MMI Common Stock  immediately
prior  to the Effective Date  would otherwise be entitled  at the Effective Date
shall be aggregated. If a fractional  share results from such aggregation,  such
stockholder  shall be entitled, after the later of (a) the Effective Date or (b)
the surrender of such stockholder's "Certificate" (as defined in Section 2.5) or
Certificates that represent such shares of MMI Common Stock, to receive from ICI
an amount in  cash in  lieu of  such fractional  share, equal  to such  fraction
multiplied  by the Determination Price. ICI will make available to the "Exchange
Agent" (as defined in Section 2.5) the cash necessary for the purpose of  paying
cash for fractional shares.
 
    2.3.   DISSENTING SHARES.  To the extent that appraisal rights are available
under the  DGCL, shares  of MMI  Common Stock  that are  issued and  outstanding
immediately  prior  to the  Effective  Date and  that  have not  been  voted for
adoption of the  Merger and  with respect of  which appraisal  rights have  been
properly  demanded  in accordance  with the  applicable  provisions of  the DGCL
("Dissenting Shares")  shall not  be converted  into the  right to  receive  the
consideration  provided for in  Sections 2.1 and  2.2 at or  after the Effective
Date unless and until the  holder of such shares  withdraws his demand for  such
appraisal  (in accordance with the applicable provisions of the DGCL) or becomes
ineligible for such appraisal.  If a holder of  Dissenting Shares withdraws  his
demand  for such appraisal (in accordance  with the applicable provisions of the
DGCL) or becomes ineligible for such  appraisal, then, as of the Effective  Date
or  the  occurrence  of  such  event,  whichever  later  occurs,  such  holder's
Dissenting Shares shall  cease to be  Dissenting Shares and  shall be  converted
into  and  represent the  right  to receive  the  consideration provided  for in
Sections 2.1 and 2.2. If any holder  of MMI Common Stock shall assert the  right
to be paid the fair value of such MMI Common Stock as described above, MMI shall
give  ICI  prompt  written  notice  thereof and  ICI  shall  have  the  right to
participate in and direct all negotiations  and proceedings with respect to  any
such  demands. MMI  shall not,  except with  the prior  written consent  of ICI,
voluntarily make any payment with respect to, or settle or offer to settle,  any
such  demand for payment. After the Effective Date, ICI will cause the Surviving
Corporation to pay its statutory obligations to holders of Dissenting Shares.
 
    2.4.  STOCK OPTIONS.
 
        (a) At the Effective Date, all options (the "Options") then  outstanding
    under  MMI's 1990 Incentive Stock Option  Plan (the "MMI Stock Option Plan")
    shall remain  outstanding following  the Effective  Date. At  the  Effective
    Date,  such Options shall, by  virtue of the Merger  and without any further
    action on the part of  MMI or the holder of  any such Option, be assumed  by
    ICI  in  accordance with  their terms  and  conditions as  in effect  at the
    Effective Date (and the terms and conditions of the MMI Stock Option  Plan),
    except  that (i) each such Option shall be exercisable for that whole number
    of shares of ICI Common  Stock (to the nearest  whole share) into which  the
    number  of shares  of MMI  Common Stock  subject to  such Option immediately
    prior to the Effective Date would  be converted under Section 2.1; (ii)  the
    option  price per share of the MMI Common  Stock shall be an amount equal to
    the option price per  share of MMI  Common Stock subject  to such Option  in
    effect immediately prior to the Effective Date divided by the Exchange Ratio
    (the  price per share, as so determined, being rounded upward to the nearest
    full cent); and (iii)  all actions to  be taken thereunder  by the Board  of
    Directors  of MMI  or a  committee thereof  shall be  taken by  the Board of
    Directors of  ICI or  a committee  thereof.  No payment  shall be  made  for
    fractional  interests.  From  and  after  the  date  of  this  Agreement, no
    additional options shall be granted by  MMI under the MMI Stock Option  Plan
    or otherwise.
 
                                      A-3
<PAGE>
        (b)  It is intended that the assumed Options, as set forth herein, shall
    not give to any holder thereof any benefits in addition to those which  such
    holder  had  prior to  the  assumption of  the  Option. ICI  shall  take all
    necessary corporate action  necessary to reserve  for issuance a  sufficient
    number  of shares  of ICI  Common Stock  for delivery  upon exercise  of the
    Options. Prior to or  as soon as practicable  after the Effective Date,  ICI
    shall  file  a  registration  statement,  or  an  amendment  to  an existing
    registration statement, under the  Securities Act of  1933, as amended  (the
    "Securities Act"), on Form S-8 (or other successor form) with respect to the
    shares  of ICI Common Stock  subject to such Options  and shall use its best
    efforts to maintain the effectiveness of such registration statement for  so
    long as ICI shall be obligated to file reports under the Securities Exchange
    Act  of 1934, as amended  (the "Exchange Act"). In  addition, ICI will cause
    such shares to be listed on the NMS.
 
        (c) Approval  by  the  stockholders  of  MMI  of  this  Agreement  shall
    constitute  authorization  and  approval  of  any  and  all  of  the actions
    described in this Section 2.4.
 
    2.5.  EXCHANGE AGENT.
 
        (a) ICI shall  authorize SunTrust  Bank, Atlanta, Georgia,  to serve  as
    exchange   agent  hereunder  (the  "Exchange  Agent").  Promptly  after  the
    Effective Date, ICI shall  deposit or shall cause  to be deposited in  trust
    with the Exchange Agent certificates representing the number of whole shares
    of  ICI Common Stock  to which the  holders of MMI  Common Stock (other than
    holders of  Dissenting Shares)  are  entitled pursuant  to this  Article  2,
    together with cash sufficient to pay for fractional shares then known to ICI
    (such  cash amounts  and certificates being  hereinafter referred  to as the
    "Exchange  Fund").  The  Exchange  Agent  shall,  pursuant  to   irrevocable
    instructions  received from ICI, deliver the  number of shares of ICI Common
    Stock and pay the amounts of cash provided for in this Article 2 out of  the
    Exchange  Fund. Additional amounts of cash, if any, needed from time to time
    by the  Exchange Agent  to  make payments  for  fractional shares  shall  be
    provided  by ICI and  shall become part  of the Exchange  Fund. The Exchange
    Fund shall not be  used for any  other purpose, except  as provided in  this
    Agreement,  or as otherwise agreed to by  ICI, Merger Corp. and MMI prior to
    the Effective Date.
 
        (b) As soon as practicable after the Effective Date, the Exchange  Agent
    shall  mail and otherwise  make available to each  record holder (other than
    holders of Dissenting Shares) who, as of the Effective Date, was a holder of
    an outstanding certificate  or certificates which  immediately prior to  the
    Effective  Date represented shares of MMI Common Stock (the "Certificates"),
    a form of letter  of transmittal and instructions  for use in effecting  the
    surrender  of the Certificates for  payment therefor and conversion thereof,
    which letter of transmittal  shall comply with all  applicable rules of  the
    NMS.  Delivery  shall  be  effected,  and risk  of  loss  and  title  to the
    Certificates shall pass, only  upon proper delivery  of the Certificates  to
    the  Exchange Agent and the form of  letter of transmittal shall so reflect.
    Upon surrender to the  Exchange Agent of a  Certificate, together with  such
    letter of transmittal duly executed, the holder of such Certificate shall be
    entitled  to receive  in exchange therefor  (i) one or  more certificates as
    requested by the  holder (properly  issued, executed  and countersigned,  as
    appropriate) representing that number of whole shares of ICI Common Stock to
    which such holder of MMI Common Stock shall have become entitled pursuant to
    the  provisions of this  Article 2, and  (ii) as to  any fractional share, a
    check representing the cash  consideration to which  such holder shall  have
    become  entitled pursuant to Section 2.2, and the Certificate so surrendered
    shall forthwith be  cancelled. No interest  will be paid  or accrued on  the
    cash  payable upon surrender of the Certificates. ICI shall pay any transfer
    or other  taxes  required  by  reason  of  the  issuance  of  a  certificate
    representing  shares  of  ICI  Common Stock;  provided,  however,  that such
    certificate is  issued  in  the  name  of  the  person  in  whose  name  the
    Certificate   surrendered  in  exchange  therefor  is  registered;  provided
    further, however, that ICI shall  not pay any transfer  or other tax if  the
    obligation  to  pay such  tax under  applicable  law is  solely that  of the
    stockholder or if payment of any such  tax by ICI otherwise would cause  the
    Merger  to fail to qualify  as a tax free  reorganization under the Code. If
    any
 
                                      A-4
<PAGE>
    portion of the consideration to be received pursuant to this Article 2  upon
    exchange  of a Certificate (whether a certificate representing shares of ICI
    Common Stock or a check representing cash  for a fractional share) is to  be
    issued  or  paid  to  a person  other  than  the person  in  whose  name the
    Certificate surrendered in exchange  therefor is registered,  it shall be  a
    condition  of such issuance and payment  that the Certificate so surrendered
    shall be properly endorsed or otherwise  in proper form for transfer as  the
    Exchange  Agent may  require and  that the  person requesting  such exchange
    shall pay in advance any transfer or  other taxes required by reason of  the
    issuance of a certificate representing shares of ICI Common Stock or a check
    representing  cash for a fractional share to such other person, or establish
    to the satisfaction of  the Exchange Agent  that such tax  has been paid  or
    that  no such tax is applicable. From  the Effective Date until surrender in
    accordance with the provisions of this Section 2.5, each Certificate  (other
    than  Certificates  representing  treasury shares  of  MMI  and Certificates
    representing Dissenting Shares)  shall represent for  all purposes only  the
    right  to receive  the consideration  provided in  Sections 2.1  and 2.2. No
    dividends that are  otherwise payable on  ICI Common Stock  will be paid  to
    persons  entitled to receive  ICI Common Stock  until such persons surrender
    their Certificates. After such surrender, there shall be paid to the  person
    in  whose name ICI  Common Stock shall  be issued any  dividends on such ICI
    Common Stock that shall have  a record date on  or after the Effective  Date
    and  prior to such surrender.  If the payment date  for any such dividend is
    after the date of such surrender, such payment shall be made on such payment
    date. In no event  shall the persons entitled  to receive such dividends  be
    entitled  to receive interest on such  dividends. All payments in respect of
    shares of MMI Common Stock that are made in accordance with the terms hereof
    shall be  deemed  to have  been  made in  full  satisfaction of  all  rights
    pertaining to such securities.
 
        (c)  In the case of any lost, mislaid, stolen or destroyed Certificates,
    the holder thereof may be required, as a condition precedent to the delivery
    to such holder of the consideration described in this Article 2, to  deliver
    to  ICI a bond in such reasonable sum as ICI may direct as indemnity against
    any claim that may be made against the Exchange Agent, ICI or the  Surviving
    Corporation  with  respect to  the Certificate  alleged  to have  been lost,
    mislaid, stolen or destroyed.
 
        (d) After the Effective Date, there  shall be no transfers on the  stock
    transfer  books of  the Surviving  Corporation of  the shares  of MMI Common
    Stock that were  outstanding immediately  prior to the  Effective Date.  If,
    after  the  Effective  Date,  Certificates are  presented  to  the Surviving
    Corporation for  transfer, they  shall be  cancelled and  exchanged for  the
    consideration described in this Article 2.
 
        (e)  Any  portion of  the Exchange  Fund that  remains unclaimed  by the
    stockholders of  MMI  for six  months  after  the Effective  Date  shall  be
    returned to ICI, upon demand, and any holder of MMI Common Stock who has not
    theretofore  complied with Section 2.5(b) shall  thereafter look only to ICI
    for issuance  of  the  number  of  shares of  ICI  Common  Stock  and  other
    consideration  to which  such holder  has become  entitled pursuant  to this
    Article 2; provided, however, that neither the Exchange Agent nor any  party
    hereto  shall be liable  to a holder of  shares of MMI  Common Stock for any
    amount required to be paid to  a public official pursuant to any  applicable
    abandoned property, escheat or similar law.
 
    2.6.   ADJUSTMENT.  If,  between the date of  this Agreement and the Closing
Date or the Effective Date,  as the case may be,  (i) the outstanding shares  of
MMI  Common Stock or ICI  Common Stock shall have  been changed into a different
number of  shares  or  a  different  class  by  reason  of  any  classification,
recapitalization,  split-up, combination, exchange of shares, or readjustment or
a stock dividend thereon shall be declared with a record date within such period
or (ii) MMI shall have issued additional shares of MMI Common Stock (other  than
upon the exercise of employee stock options granted prior to the date hereof) or
options  or warrants  to purchase the  same, or securities  convertible into the
same, the number of  shares of ICI  Common Stock issued  pursuant to the  Merger
shall  be adjusted to accurately reflect such change (it being acknowledged that
MMI elsewhere herein covenants not to take  any of the actions described in  (i)
or (ii) above).
 
                                      A-5
<PAGE>
                                   ARTICLE 3.
                     REPRESENTATIONS AND WARRANTIES OF MMI
 
    Except  as set forth  on "MMI's Disclosure Schedule"  (which term shall mean
the written information delivered by MMI to  ICI prior to the execution of  this
Agreement;  provided,  that  information  shall be  deemed  to  be  disclosed in
accordance with a  given provision  of this Agreement  only to  the extent  that
specific  written  reference to  such  provision of  this  Agreement is  made in
connection with  the  disclosure  of  such  information  at  the  time  of  such
delivery),  MMI  hereby  represents and  warrants  to  ICI and  Merger  Corp. as
follows:
 
    3.1.  ORGANIZATION  AND GOOD  STANDING OF  MMI.  Each  of MMI  and the  "MMI
Subsidiaries"  (as  defined in  Section 3.2)  is  a corporation  duly organized,
validly existing and in good standing under the laws of the jurisdiction of  its
incorporation.   Accurate   and  complete   copies   of  MMI's   certificate  of
incorporation and bylaws, in  each case as  in effect on  the date hereof,  have
heretofore been delivered to ICI.
 
    3.2.      CAPITAL   STOCK   OF   MMI   SUBSIDIARIES   AND   OTHER  OWNERSHIP
INTERESTS.  MMI's Disclosure Schedule sets forth a true and complete list of all
corporations, partnerships  and other  entities  in which  MMI owns  any  equity
interest (the "MMI Subsidiaries"), the jurisdiction in which each MMI Subsidiary
is incorporated or organized, and all shares of capital stock or other ownership
interests  authorized, issued and outstanding of each MMI Subsidiary. The shares
of capital stock or other equity interests of each MMI Subsidiary have been duly
authorized and are validly issued, fully paid and nonassessable and free of  any
preemptive  right. All shares of capital stock or other equity interests of each
MMI Subsidiary owned by MMI  or any of its subsidiaries  are set forth on  MMI's
Disclosure  Schedule and are owned by MMI,  either directly or indirectly as set
forth in MMI's Disclosure Schedule, free  and clear of all liens,  encumbrances,
equities or claims.
 
    3.3.   FOREIGN QUALIFICATION.  MMI and each of the MMI Subsidiaries are duly
qualified or licensed  to do  business and  are in  good standing  as a  foreign
corporation  in every jurisdiction where the failure  so to qualify could have a
material adverse effect on  (a) the business,  operations, prospects, assets  or
financial  condition of MMI and the MMI Subsidiaries taken as a whole or (b) the
validity or enforceability of, or the ability of MMI to perform its  obligations
under,  this  Agreement and  the other  documents  contemplated hereby  (an "MMI
Material Adverse Effect").
 
    3.4.  CORPORATE POWER AND AUTHORITY.   Each of MMI and the MMI  Subsidiaries
has  the corporate power and authority and  all licenses and permits required by
governmental authorities to own, lease and operate its properties and assets and
to carry on  its business as  currently being conducted.  MMI has the  corporate
power  and authority to  execute and deliver this  Agreement and the agreements,
documents and instruments contemplated  hereby and, subject  to the approval  of
this  Agreement and the  Merger by its stockholders,  to perform its obligations
under this Agreement and the other documents  executed or to be executed by  MMI
in  connection with this Agreement and  to consummate the Merger. The execution,
delivery, and  performance by  MMI of  this Agreement  and the  other  documents
executed  or to be executed  by MMI in connection  with this Agreement have been
duly authorized by all necessary corporate action.
 
    3.5.  BINDING EFFECT.  This Agreement and the other documents executed or to
be executed by MMI in connection with this Agreement have been or will have been
duly executed  and delivered  by  MMI and  are or  will  be, when  executed  and
delivered,  the  legal,  valid and  binding  obligations of  MMI  enforceable in
accordance with their terms except that:
 
        (a) enforceability may  be limited  by bankruptcy,  insolvency or  other
    similar laws affecting creditors' rights;
 
        (b)  the availability of equitable remedies  may be limited by equitable
    principles of general applicability; and
 
        (c) rights to indemnification may be limited by considerations of public
    policy.
 
                                      A-6
<PAGE>
    3.6.  ABSENCE OF RESTRICTIONS AND  CONFLICTS.  Subject only to the  approval
of  the  adoption of  this Agreement  and  the Merger  by MMI's  stockholders as
described in  Section  5.8 and  the  following  sentence of  this  Section,  the
execution,  delivery and performance  of this Agreement  and the other documents
executed or to  be executed by  MMI in  connection with this  Agreement and  the
consummation  of  the Merger  and the  other  transactions contemplated  by this
Agreement and the fulfillment of and compliance with the terms and conditions of
this Agreement do not and  will not, with the passing  of time or the giving  of
notice  or both,  violate or  conflict with, constitute  a breach  of or default
under, result in the loss of any material benefit under, permit or result in the
acceleration or termination of any obligation  under, or result in the  creation
of any lien, security interest, charge or encumbrance upon any of the properties
or assets of MMI or any of the MMI Subsidiaries under, (i) any term or provision
of  the Articles  or Certificate of  Incorporation or  Bylaws of MMI  or any MMI
Subsidiary, (ii) any "MMI Material Contract" (as defined in Section 3.13), (iii)
any judgment, decree,  permit, concession,  license, or  order of  any court  or
governmental  authority or agency to which MMI  or any MMI Subsidiary is a party
or by which MMI,  any MMI Subsidiary  or any of  their respective properties  is
bound  or (iv) any statute, law, regulation or rule applicable to MMI or any MMI
Subsidiary. Except  for  compliance  with the  applicable  requirements  of  the
Hart-Scott-Rodino  Antitrust  Improvements  Act  of 1976  (the  "HSR  Act"), the
Securities Act,  the Exchange  Act,  and applicable  state securities  laws,  no
consent,  approval, order or  authorization of, or  registration, declaration or
filing with, any governmental agency or public or regulatory unit, agency,  body
or  authority  is  required  in  connection  with  the  execution,  delivery  or
performance  of  this  Agreement  by  MMI,  the  consummation  by  MMI  of   the
transactions  contemplated hereby or  the ownership and operation  by MMI of its
business and  properties after  the  Effective Date  in substantially  the  same
manner as now owned and operated.
 
    3.7.  CAPITALIZATION OF MMI.
 
        (a) The authorized capital stock of MMI consists of 15,000,000 shares of
    common  stock, $.01 par  value, and 1,000,000 shares  of preferred stock, no
    par value. As of  the date hereof,  there were (i)  4,596,886 shares of  MMI
    Common  Stock issued and  outstanding (not including  236,064 shares held in
    the treasury), (ii) no shares of  preferred stock, and (iii) 711,429  shares
    of  MMI Common Stock reserved for  issuance upon the exercise of outstanding
    Options granted under the MMI Option Plan, the terms of which are summarized
    in MMI's Disclosure Schedule. No subsidiary  of MMI holds any shares of  the
    capital  stock of MMI. Since  February 29, 1996, MMI  has not (i) issued any
    shares of capital stock except pursuant to the exercise of then  outstanding
    Options  in accordance with their terms  or (ii) repurchased or redeemed any
    shares of MMI capital stock.
 
        (b) All of the  issued and outstanding shares  of MMI Common Stock  have
    been  duly authorized and  validly issued and  are fully paid, nonassessable
    and free of preemptive rights.
 
        (c)  To  MMI's  knowledge,  there  are  no  voting  trusts,  stockholder
    agreements or other voting arrangements by the stockholders of MMI.
 
        (d) Except as set forth in subsection (a) above, there is no outstanding
    subscription,   contract,  convertible  or  exchangeable  security,  option,
    warrant, call or other  right obligating MMI or  any of MMI Subsidiaries  to
    issue,  sell, exchange  or otherwise dispose  of, or to  purchase, redeem or
    otherwise acquire, shares of, or securities convertible into or exchangeable
    for, capital stock of MMI or MMI Subsidiaries.
 
    3.8  MMI SEC REPORTS.   MMI has made available  to ICI and Merger Corp.  (i)
MMI's  Annual Reports  on Form  10-K, including  all exhibits  filed thereto and
items incorporated therein by  reference, (ii) MMI's  Quarterly Reports on  Form
10-Q,   including  all  exhibits  thereto  and  items  incorporated  therein  by
reference, (iii) proxy statements relating to MMI's meetings of stockholders and
(iv) all other reports  or registration statements  (as amended or  supplemented
prior  to  the date  hereof),  filed by  MMI  with the  Securities  and Exchange
Commission (the "SEC") since December  31, 1993, including all exhibits  thereto
and  items  incorporated  therein by  reference  (items (i)  through  (iv) being
referred to as the "MMI SEC Reports"). As of their respective dates, the MMI SEC
Reports did not contain any untrue statement of a material fact or omit to state
a material fact required to be
 
                                      A-7
<PAGE>
stated therein or  necessary to  make the statements  therein, in  light of  the
circumstances  under which  they were made,  not misleading.  Since December 31,
1993, MMI has filed all forms, reports and documents with the SEC required to be
filed by  it pursuant  to the  federal securities  laws and  the SEC  rules  and
regulations  thereunder, each  of which  complied as to  form, at  the time such
form, report or document was filed, in all material respects with the applicable
requirements of the Securities Act and the Exchange Act and the applicable rules
and regulations thereunder.
 
    3.9.  FINANCIAL STATEMENTS AND  RECORDS OF MMI.   MMI has made available  to
ICI  and Merger Corp. true, correct and  complete copies of (i) the consolidated
balance sheets of MMI and the MMI Subsidiaries as of November 30, 1994 and  1995
and  the consolidated statements of income,  stockholders' equity and cash flows
for the  fiscal years  then ended,  including the  notes thereto,  in each  case
examined  by and accompanied by the report  of KPMG Peat Marwick L.L.P. and (ii)
the unaudited balance sheet of MMI and  the MMI Subsidiaries as of February  29,
1996,  and the related unaudited statements  of income, stockholders' equity and
cash flows for the  fiscal quarter then ended  (collectively the "MMI  Financial
Statements").  The MMI Financial Statements have  been prepared from, and are in
accordance with,  the books  and records  of MMI  and the  MMI Subsidiaries  and
present  fairly, in all material respects, the assets, liabilities and financial
position of  MMI as  of the  dates thereof  and the  results of  operations  and
changes  in financial position thereof for the  periods then ended, in each case
in  conformity  with  generally  accepted  accounting  principles,  consistently
applied,  except as noted  therein. Since November  30, 1995, there  has been no
change in accounting principles applicable to, or methods of accounting utilized
by, MMI, except  as noted  in the MMI  Financial Statements.  The statements  of
income  and cash flow contained  in the MMI Financial  Statements do not contain
any material items  of special  or nonrecurring income,  except as  specifically
identified  therein. On or before the 20th  day of each calendar month following
the date  of  this Agreement,  MMI  shall  deliver to  ICI  unaudited  financial
statements (including a balance sheet and statements of income and cash flow) as
of the end of the previous month and for the year to date. The books and records
of  MMI have  been and  are being  maintained in  accordance with  good business
practice, reflect  only valid  transactions,  are complete  and correct  in  all
material respects, and present fairly in all material respects the basis for the
financial  position  and results  of  operations of  MMI  set forth  in  the MMI
Financial Statements.
 
    3.10.  ABSENCE OF CERTAIN CHANGES.  Since February 29, 1996, MMI and the MMI
Subsidiaries have not, except as  may result from the transactions  contemplated
by this Agreement:
 
        (a)  suffered any change in the business, results of operations, working
    capital, assets, liabilities  or condition (financial  or otherwise) or  the
    manner  of conducting the  business of MMI  and MMI Subsidiaries  taken as a
    whole, except as reflected  on the MMI Financial  Statements and except  for
    such changes that would not have an MMI Material Adverse Effect;
 
        (b)  suffered any damage or destruction to  or loss of the assets of MMI
    or any MMI Subsidiary, whether or  not covered by insurance, which  property
    or  assets  are  material to  the  operations  or business  of  MMI  and MMI
    Subsidiaries taken as a whole;
 
        (c) forgiven, compromised,  canceled, released, waived  or permitted  to
    lapse any material rights or claims;
 
        (d)  entered into  or terminated  any material  agreement, commitment or
    transaction, or agreed or made any changes in material leases or agreements,
    or suffered any of the foregoing to occur, other than renewals or extensions
    thereof and leases, agreements, transactions and commitments entered into in
    the ordinary course  of business (excluding  the pending asset  acquisitions
    described in the MMI Disclosure Schedule);
 
        (e)  written  up, written  down or  written  off the  book value  of any
    material amount of assets;
 
        (f) declared, paid or set aside for payment any dividend or distribution
    with respect to MMI's capital stock;
 
                                      A-8
<PAGE>
        (g) redeemed,  purchased  or otherwise  acquired,  or sold,  granted  or
    otherwise disposed of, directly or indirectly, any of MMI's capital stock or
    securities  (other than shares  issued upon exercise of  the Options) or any
    rights to acquire such capital stock or securities, or agreed to changes  in
    the  terms and conditions of  any such rights outstanding  as of the date of
    this Agreement;
 
        (h) increased the compensation of or  paid any bonuses to any  employees
    or  contributed to any employee benefit  plan, other than in accordance with
    established policies, practices or requirements  and as provided in  Section
    5.1 hereof;
 
        (i)  entered into any employment, consulting, compensation or collective
    bargaining  agreement  with  any  person   or  group,  or  experienced   any
    resignations   of,  or  had  any  terminations  or  disputes  involving  the
    employment or  contract relationship  with  any of  its employees  or  sales
    representatives  which  could  have a  MMI  Material Adverse  Effect  on the
    Surviving Corporation;
 
        (j)  entered into, adopted or amended any employee benefit plan;
 
        (k) entered into any  transaction other than in  the ordinary course  of
    business; or
 
        (l) entered into any agreement to do any of the foregoing.
 
    3.11.   NO  MATERIAL UNDISCLOSED LIABILITIES.   There are  no liabilities or
obligations of MMI  or the  MMI Subsidiaries  of any  nature, whether  absolute,
accrued,  contingent or  otherwise, other  than the  liabilities and obligations
that are  fully reflected,  accrued or  reserved against  in the  MMI  Financial
Statements,  for which the reserves are  appropriate and reasonable, or incurred
in the ordinary  course of  business and  consistent with  past practices  since
February 29, 1996.
 
    3.12.   TAX RETURNS; TAXES.  Each of  MMI and the MMI Subsidiaries have duly
and timely filed all federal, state,  county, local and foreign tax returns  and
reports  required to  be filed  by it, including  those with  respect to income,
payroll, property, withholding, social security, unemployment, franchise, excise
and sales taxes and  all such returns  and reports are true  and correct in  all
material  respects; have either paid  in full all taxes  that have become due as
reflected on any return  or report and any  interest and penalties with  respect
thereto or have fully accrued on its books or have established adequate reserves
for  all  taxes  payable but  not  yet due;  and  have made  cash  deposits with
appropriate governmental authorities representing  estimated payments of  taxes,
including income taxes and employee withholding tax obligations. No extension or
waiver of any statute of limitations or time within which to file any return has
been  granted to or requested by MMI or the MMI Subsidiaries with respect to any
tax. No unsatisfied deficiency, delinquency  or default for any tax,  assessment
or governmental charge has been claimed, proposed or assessed against MMI or the
MMI  Subsidiaries, nor has  MMI or the  MMI Subsidiaries received  notice of any
such deficiency,  delinquency  or  default.  There  is  no  audit,  examination,
deficiency  or refund  litigation or matter  in controversy with  respect to any
taxes. MMI and the MMI Subsidiaries have no material tax liabilities other  than
those  reflected  on  the MMI  Financial  Statements  and those  arising  in the
ordinary course of business since February 29, 1996. MMI will make available  to
ICI  true, complete and correct copies of MMI's consolidated federal tax returns
for the last five years and make  available such other tax returns requested  by
ICI.
 
    3.13.   MATERIAL CONTRACTS.  MMI will furnish or make available accurate and
complete copies of the MMI Material Contracts (as defined herein) applicable  to
MMI or any of the MMI Subsidiaries to ICI. All of the MMI Material Contracts are
valid,  binding and  enforceable. There  is not  under any  of the  MMI Material
Contracts any existing breach, default or event of default by MMI or any of  the
MMI  Subsidiaries nor  event that  with notice  or lapse  of time  or both would
constitute a  breach, default  or event  of default  by MMI  or any  of the  MMI
Subsidiaries nor does MMI know of, and MMI has not received notice of, or made a
claim  with respect to, any  breach or default by  any other party thereto which
would, severally or in  the aggregate, have an  MMI Material Adverse Effect.  As
used  herein, the  term "MMI  Material Contracts"  shall mean  all contracts and
agreements filed, or required to be filed, as exhibits to MMI's Annual Report on
Form 10-K for  the year ended  November 30, 1995,  any contracts and  agreements
entered  into since November 30, 1995 which would  be required to be filed as an
exhibit to MMI's Annual  Report on Form  10-K for the  year ending November  30,
1996, any note,
 
                                      A-9
<PAGE>
bond,  mortgage, indenture,  license agreement,  lease, employment  agreement or
other instrument or obligation to which any of MMI or the MMI Subsidiaries is  a
party  or by  which any  of them  or any  of their  properties or  assets may be
subject. Except as set forth in the MMI Disclosure Schedule, neither MMI nor any
MMI Subsidiary is a party  to any legally binding  contract to sell or  purchase
goods  or services which is  not terminable on less  than six months notice; any
power of attorney; any  agreement containing covenants by  it not to compete  or
restricting  the customers  from whom  or the  area in  which it  may solicit or
conduct its business; any contract arrangement or commitment for the acquisition
of any other business or assets not made in the ordinary course of business; any
contracts, arrangements or  commitments for  capital expenditures  in excess  of
$50,000  in  the  aggregate; and  any  contract, arrangement  or  commitment for
payment of  severance  or  other  fees  to  any  existing  or  former  employee,
consultant or sales representative.
 
    3.14.  LITIGATION AND GOVERNMENT CLAIMS.  Except as disclosed in the MMI SEC
Reports,  there is no pending suit,  claim, action or litigation, whether civil,
criminal or  administrative, arbitration  or  other proceeding  or  governmental
investigation  or inquiry, or any pending change in any environmental, zoning or
building laws, regulations or ordinances against MMI or the MMI Subsidiaries  to
which  their businesses or assets  are subject which would,  severally or in the
aggregate, have an MMI Material Adverse  Effect. To the knowledge of MMI,  there
are  no such  proceedings threatened or  contemplated, or  any unasserted claims
(whether or not the potential claimant may be aware of the claim) of any  nature
that  might  be  asserted  against  MMI or  the  MMI  Subsidiaries  which would,
severally or in the aggregate, have an MMI Material Adverse Effect. Neither  MMI
nor  any MMI Subsidiary is subject to  any judgment, decree, injunction, rule or
order of any court, or any governmental restriction applicable to MMI or any MMI
Subsidiary which is reasonably likely (i) to have an MMI Material Adverse Effect
or (ii) to cause a material limitation on ICI's ability to operate the  business
of MMI after the Closing.
 
    3.15.   COMPLIANCE WITH  LAWS.  MMI  and the MMI  Subsidiaries each have all
material authorizations,  approvals,  licenses  and orders  to  carry  on  their
respective  businesses as  they are  now being conducted,  to own  or hold under
lease the properties and assets they own or hold under lease and to perform  all
of  their obligations under the agreements to which they are a party, except for
instances which would not have an MMI  Material Adverse Effect. MMI and the  MMI
Subsidiaries  have  been  and  are  in  compliance  with  all  applicable  laws,
regulations and administrative orders of  any country, state or municipality  or
of any subdivision of any thereof to which their respective businesses and their
employment  of labor or their use or  occupancy of properties or any part hereof
are subject, the failure to obtain or  the violation of which would have an  MMI
Material Adverse Effect.
 
    3.16.   EMPLOYEE BENEFIT PLANS.  Each employee benefit plan, as such term is
defined in Section 3(3) of the Employee Retirement Income Security Act of  1974,
as  amended ("ERISA"),  of MMI  or the  MMI Subsidiaries  (collectively the "MMI
Employee  Plans")  complies  in  all  material  respects  with  all   applicable
requirements  of ERISA and the Code, and  other applicable laws. None of the MMI
Employee Plans is an employee pension benefit plan subject to Title IV or Part 3
of Subtitle B of  Title I of ERISA  or a multiemployer plan,  as such terms  are
defined  in  ERISA.  Neither  MMI  nor any  MMI  Subsidiary,  nor  any  of their
respective directors, officers, employees or agents has, with respect to any MMI
Employee Plan, engaged in any "prohibited transaction," as such term is  defined
in  the Code or ERISA, nor has any  MMI Employee Plan engaged in such prohibited
transaction which could  result in any  taxes or penalties  or other  prohibited
transactions, which in the aggregate could have an MMI Material Adverse Effect.
 
    3.17.    LABOR  RELATIONS.   Each  of MMI  and  the MMI  Subsidiaries  is in
compliance in all respects with all  laws (including Federal and state laws  and
the   laws  of  another  country  or  governmental  entity  thereof)  respecting
employment and employment practices, terms  and conditions of employment,  wages
and  hours,  and is  not  engaged in  any  unfair labor  or  unlawful employment
practice, except  in any  case which  would  not have  an MMI  Material  Adverse
Effect.  There is no unlawful  employment practice discrimination charge pending
before the EEOC or EEOC recognized  state "referral agency." There is no  unfair
labor  practice charge or complaint  against MMI or any  of the MMI Subsidiaries
 
                                      A-10
<PAGE>
pending before  the National  Labor  Review Board.  There  is no  labor  strike,
dispute,  slowdown or  stoppage actually  pending or,  to the  knowledge of MMI,
threatened against or involving or affecting MMI or any of the MMI  Subsidiaries
and  no National  Labor Review  Board representation  question exists respecting
their respective employees. No grievances  or arbitration proceeding is  pending
and  no  written  claim  therefor  exists.  There  is  no  collective bargaining
agreement that is binding on MMI or any of the MMI Subsidiaries.
 
    3.18.  INTELLECTUAL  PROPERTY.   MMI and the  MMI Subsidiaries  own or  have
valid,  binding and  enforceable rights  to use  all patents,  trademarks, trade
names, service  marks,  service  names, copyrights,  applications  therefor  and
licenses  or other rights in respect  thereof ("MMI Intellectual Property") used
or held for use in connection with the business of MMI or the MMI  Subsidiaries,
without  any conflict with the rights of others, except for such conflicts as do
not have  an  MMI Material  Adverse  Effect. Neither  MMI  nor any  of  the  MMI
Subsidiaries  has received  any notice  from any  other person  pertaining to or
challenging the right  of MMI  or any  of the MMI  Subsidiaries to  use any  MMI
Intellectual Property or any trade secrets, proprietary information, inventions,
know-how,  processes and procedures owned or used  or licensed to MMI or the MMI
Subsidiaries.
 
    3.19.  PROPERTIES.   MMI and the MMI  Subsidiaries have good and  marketable
title,  free and clear of all liens,  claims or encumbrances (other than for the
MMI Material Contracts) to all of  their material properties and assets  whether
tangible  or intangible, real, personal or mixed, reflected on the MMI Financial
Statements as being owned by MMI or the MMI Subsidiaries. All buildings and  all
fixtures,  equipment and  other property  and assets  which are  material to its
business held under leases or  subleases by any of  MMI or the MMI  Subsidiaries
are held under valid instruments enforceable in accordance with their respective
terms. Substantially all of MMI's and MMI Subsidiaries' equipment and properties
have  been well maintained and are in good and serviceable condition, reasonable
wear and tear excepted.
 
    3.20.   INSURANCE.   MMI  and  each of  the  MMI Subsidiaries  is  presently
insured,  and during each of  the past five (5)  calendar years has been insured
for reasonable  amounts  against such  risks  as companies  engaged  in  similar
business  would,  in  accordance  with good  business  practice,  customarily be
insured. At all times since  the date of this  Agreement, MMI has maintained  in
effect its directors' and officers' liability insurance policy.
 
    3.21.    ENVIRONMENTAL  MATTERS.    MMI  and  the  MMI  Subsidiaries  are in
compliance with all applicable federal,  state, local and foreign laws  relating
to   emissions,  discharges  and  releases   of  hazardous  materials  into  the
environment and the generation, treatment, storage, transportation and  disposal
of  hazardous waste, including, without limitation, any applicable provisions of
the Resource  Conservation  and  Recovery  Act  of  1976  or  the  Comprehensive
Environmental  Response, Compensation and Liability Act of 1980, except as would
not cause a MMI Material Adverse Effect.  There are no conditions at, on,  under
or related to any real property owned or operated by MMI or the MMI Subsidiaries
which presently or potentially poses a significant hazard to human health or the
environment,  and  there  has  been  no  production,  use,  treatment,  storage,
transportation or  disposal  by  MMI or  any  of  the MMI  Subsidiaries  of  any
Hazardous  Substance  (as hereinbelow  defined)  nor any  release  or threatened
release by MMI or  any MMI subsidiary of  any Hazardous Substance. No  Hazardous
Substance  is now  or ever  has been stored  by MMI  or the  MMI Subsidiaries in
underground tanks, pits or surface impoundments. For purposes of the  foregoing,
the  term "Hazardous Substance" means any hazardous or toxic substance, material
or waste  (including, without  limitation, petroleum  products and  by-products)
which is regulated by any applicable federal, state, local or foreign authority.
 
    3.22.     REGISTRATION  OBLIGATIONS.    Neither  MMI  nor  any  of  the  MMI
Subsidiaries is  under  any  obligation, contingent  or  otherwise,  which  will
survive the Merger to register any of its securities under the Securities Act.
 
    3.23.   STATE TAKEOVER  LAWS.  MMI  and the MMI  Subsidiaries have taken all
steps to  exempt  the transactions  contemplated  by this  Agreement,  and  this
Agreement  is  not  subject to,  any  applicable state  takeover  law including,
without limitation, DGCL Section 203.
 
                                      A-11
<PAGE>
    3.24.  ACCOUNTING, TAX AND REGULATORY MATTERS.   Neither MMI nor any of  the
MMI  Subsidiaries has taken or agreed to take any action or has any knowledge of
any fact  or  circumstances that  would  prevent the  transactions  contemplated
hereby  from qualifying  for pooling  of interest  accounting treatment  or as a
reorganization within the meaning of Section 368 of the Code.
 
    3.25.  ACCURACY OF DISCLOSURES.  None of the information supplied by MMI  or
any  MMI  Subsidiary  for  inclusion  in  the  Registration  Statement  or Proxy
Statement (as such terms are  defined in Section 5.7) will,  in the case of  the
Proxy Statement or any amendments or supplements thereto, at the time of mailing
of  the Proxy Statement  and any amendments  or supplements thereto,  and at the
time of the meeting of stockholders of  MMI in accordance therewith, or, in  the
case  of the Registration Statement at the  time it becomes effective and at the
Effective Date, contain any untrue statement of a material fact or omit to state
any material fact required to  be stated therein or  necessary in order to  make
the statements therein, in light of the circumstances under which they are made,
not  misleading.  The  Registration Statement  will  comply  as to  form  in all
material respects with the provisions of  the Securities Act, and the rules  and
regulations  promulgated thereunder. The Proxy Statement  will comply as to form
in all material respects with the provisions  of the Exchange Act and the  rules
and regulations thereunder.
 
    3.26.   BROKERS AND FINDERS.  None of MMI, the MMI Subsidiaries or, to MMI's
knowledge, any  of  their  respective  officers,  directors  and  employees  has
employed any broker, finder or investment bank or incurred any liability for any
investment  banking fees,  financial advisory  fees, brokerage  fees or finders'
fees in connection with  the transactions contemplated  hereby, except that  MMI
has  engaged Goldman,  Sachs &  Co. as financial  advisor pursuant  to a written
agreement, a true and complete  copy of which has  been delivered to ICI.  Other
than  the foregoing arrangements and other than certain fees that may be paid to
ICI's financial advisor as contemplated by Section 4.24 hereof, MMI is not aware
of any claim for payment of any finder's fees, brokerage or agent's  commissions
or  other  like payments  in connection  with the  negotiations leading  to this
Agreement or the consummation of  the transactions contemplated hereby. MMI  has
delivered to ICI all contracts, agreements and documents, including summaries of
oral agreements, that relate to the engagement of and the payment of fees to its
financial advisors.
 
    3.27.   OPINION OF  FINANCIAL ADVISOR.   MMI has received  (and upon receipt
thereof will promptly  deliver to ICI  a photocopy thereof)  the opinion of  its
financial  advisor (addressed solely to the MMI Board of Directors and not to be
relied upon by any other person) to the effect that, as of the date of amendment
of this Agreement,  the Exchange  Ratio is  fair to  the holders  of MMI  Common
Stock.
 
                                   ARTICLE 4.
             REPRESENTATIONS AND WARRANTIES OF ICI AND MERGER CORP.
 
    Except  as set forth  on "ICI's Disclosure Schedule"  (which term shall mean
the written information delivered by ICI to  MMI prior to the execution of  this
Agreement;  provided,  that  information  shall be  deemed  to  be  disclosed in
accordance with a  given provision  of this Agreement  only to  the extent  that
specific  written  reference to  such  provision of  this  Agreement is  made in
connection with  the  disclosure  of  such  information  at  the  time  of  such
delivery), ICI and Merger Corp. hereby represent and warrant to MMI as follows:
 
    4.1.   ORGANIZATION AND GOOD STANDING OF ICI.  Each of ICI, Merger Corp. and
the ICI  Subsidiaries  (as  defined  in  Section  4.2)  is  a  corporation  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction of  its  incorporation.  Accurate  and  complete  copies  of  ICI's
articles  of incorporation  and bylaws, in  each case  as in effect  on the date
hereof, have heretofore been delivered to MMI.
 
    4.2.     CAPITAL   STOCK   OF   ICI   SUBSIDIARIES   AND   OTHER   OWNERSHIP
INTERESTS.  ICI's Disclosure Schedule sets forth a true and complete list of all
corporations,  partnerships  and other  entities in  which  ICI owns  any equity
interest (the "ICI Subsidiaries"), the jurisdiction in which each ICI Subsidiary
is
 
                                      A-12
<PAGE>
incorporated or organized, and  all shares of capital  stock or other  ownership
interests authorized,
issued  and outstanding of each  ICI Subsidiary. The shares  of capital stock or
other equity interests of each ICI Subsidiary have been duly authorized and  are
validly issued, fully paid and nonassessable.
 
    4.3.   FOREIGN QUALIFICATION.  ICI and each of the ICI Subsidiaries are duly
qualified or licensed  to do  business and  are in  good standing  as a  foreign
corporation  in every jurisdiction where the failure  so to qualify could have a
material adverse effect on  (a) the business,  operations, prospects, assets  or
financial  condition of ICI and the ICI Subsidiaries taken as a whole or (b) the
validity or enforceability of, or the ability of ICI to perform its  obligations
under,  this  Agreement and  the other  documents  contemplated hereby  (an "ICI
Material Adverse Effect").
 
    4.4.  CORPORATE POWER AND AUTHORITY.   Each of ICI and the ICI  Subsidiaries
has  the corporate power and authority and  all licenses and permits required by
governmental authorities to own, lease and operate its properties and assets and
to carry on its business  as currently being conducted.  Each of ICI and  Merger
Corp.  has  the  corporate  power  and authority  to  execute  and  deliver this
Agreement and, except as set forth  in ICI's Disclosure Schedule and subject  to
obtaining any requisite ICI shareholder approval required for listing ICI Common
Stock  on NMS,  to perform  its obligations under  this Agreement  and the other
documents executed or to  be executed by ICI  in connection with this  Agreement
and to consummate the Merger. Except as set forth in the preceding sentence, the
execution,  delivery, and performance by ICI  and Merger Corp. of this Agreement
and the other documents executed  or to be executed by  ICI or Merger Corp.,  as
applicable,  in connection with this Agreement  have been duly authorized by all
necessary corporate action.
 
    4.5.  BINDING EFFECT.  This Agreement and the other documents executed or to
be executed by ICI and Merger Corp. in connection with this Agreement have  been
or will have been duly executed and delivered by ICI and Merger Corp. and are or
will  be, when executed and delivered,  the legal, valid and binding obligations
of ICI and Merger Corp., enforceable in accordance with their terms except that:
 
        (a) enforceability may  be limited  by bankruptcy,  insolvency or  other
    similar laws affecting creditors' rights;
 
        (b)  the availability of equitable remedies  may be limited by equitable
    principles of general applicability; and
 
        (c) rights to indemnification may be limited by considerations of public
    policy.
 
    4.6.  ABSENCE OF RESTRICTIONS AND CONFLICTS.  The consummation of the Merger
and the other transactions contemplated by this Agreement and the fulfillment of
and compliance with the terms and conditions  of this Agreement do not and  will
not,  with the  passing of  time or  the giving  of notice  or both,  violate or
conflict with, constitute a breach  of or default under,  result in the loss  of
any  material benefit under, permit or result in the acceleration or termination
of any  obligation  under, or  result  in the  creation  of any  lien,  security
interest,  charge or encumbrance upon any of  the properties or assets of ICI or
any of the ICI Subsidiaries under, (i) any term or provision of the Articles  or
Certificate  of Incorporation or Bylaws  of ICI or any  ICI Subsidiary, (ii) any
"ICI Material  Contract"  (as defined  in  Section 4.13),  (iii)  any  judgment,
decree,  permit,  concession,  license or  order  of any  court  or governmental
authority or agency to which  ICI or any ICI Subsidiary  is a party or by  which
ICI,  any ICI Subsidiary or any of their respective properties is bound, or (iv)
any statute, law, regulation  or rule applicable to  ICI or any ICI  Subsidiary.
Except  for  compliance with  the applicable  requirements of  the HSR  Act, the
Securities Act, the Exchange Act, the NMS and applicable state securities  laws,
no consent, approval, order or authorization of, or registration, declaration or
filing  with, any governmental agency or public or regulatory unit, agency, body
or  authority  is  required  in  connection  with  the  execution,  delivery  or
performance   of  this  Agreement  by  ICI,  the  consummation  by  ICI  of  the
transactions contemplated hereby or  the ownership and operation  of MMI by  ICI
after  the Effective  Date in  substantially the  same manner  as now  owned and
operated.
 
                                      A-13
<PAGE>
    4.7.  CAPITALIZATION OF ICI.
 
        (a)  The authorized capital stock of  ICI consists of 100,000,000 shares
    of ICI Common  Stock, $.001 par  value; and 10,000,000  shares of  preferred
    stock,  no par value. As of the date hereof, there are (i) 30,546,186 shares
    of  Common  Stock  outstanding,  (ii)  no  shares  of  the  Preferred  Stock
    outstanding,  and  (iii) 2,756,886  shares  reserved for  issuance  upon the
    exercise of  outstanding options  (the "ICI  Options") granted  under  ICI's
    stock option plans.
 
        (b)  All of the issued  and outstanding shares of  ICI Common Stock have
    been duly authorized and  validly issued and  are fully paid,  nonassessable
    and free of preemptive rights.
 
        (c)  To  ICI's  knowledge,  there  are  no  voting  trusts,  stockholder
    agreements or other voting arrangements by the stockholders of ICI.
 
        (d) Except as set forth in subsection (a) above, there is no outstanding
    subscription,  contract,  convertible  or  exchangeable  security,   option,
    warrant,  call or other right obligating ICI  or any of the ICI Subsidiaries
    to issue, sell, exchange or otherwise dispose of, or to purchase, redeem  or
    otherwise acquire, shares of, or securities convertible into or exchangeable
    for, capital stock of ICI or the ICI Subsidiaries.
 
    4.8.   ICI  SEC REPORTS.   ICI has  made available  to MMI  (i) ICI's Annual
Reports  on  Form  10-K,  including   all  exhibits  filed  thereto  and   items
incorporated  therein by reference,  (ii) ICI's Quarterly  Reports on Form 10-Q,
including all  exhibits thereto  and items  incorporated therein  by  reference,
(iii)  proxy statements relating to ICI's  meetings of stockholders and (iv) all
other reports or registration  statements (as amended  or supplemented prior  to
the  date hereof), filed by ICI with  the SEC since December 31, 1993, including
all exhibits  thereto and  items incorporated  therein by  reference (items  (i)
through (iv) being referred to as the "ICI SEC Reports"). As of their respective
dates,  the ICI SEC Reports  did not contain any  untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein, in  light of the circumstances under which  they
were  made, not misleading. Since December 31,  1993, ICI has filed all material
forms, reports and documents with the SEC required to be filed by it pursuant to
the federal securities laws and the  SEC rules and regulations thereunder,  each
of  which complied  as to form,  at the time  such form, report  or document was
filed, in  all  material  respects  with  the  applicable  requirements  of  the
Securities  Act and  the Exchange Act  and the applicable  rules and regulations
thereunder.
 
    4.9.  FINANCIAL STATEMENTS AND  RECORDS OF ICI.   ICI has made available  to
MMI  true, correct and complete copies of (i) the consolidated balance sheets of
ICI and  the  ICI  Subsidiaries as  of  December  31, 1994  and  1995,  and  the
consolidated  statements of income, stockholders' equity  and cash flows for the
fiscal years then ended, including the  notes thereto, in each case examined  by
and  accompanied by the report of Deloitte  & Touche LLP, and (ii) the unaudited
consolidated balance sheet of ICI and the ICI Subsidiaries as of March 31,  1996
and  related  the  unaudited consolidated  statements  of  income, shareholders'
equity and  cash  flow  for  the quarter  then  ended  (collectively,  the  "ICI
Financial  Statements"). The ICI  Financial Statements have  been prepared from,
and are  in  accordance  with,  the  books  and  records  of  ICI  and  the  ICI
Subsidiaries   and  present  fairly,  in  all  material  respects,  the  assets,
liabilities and  financial position  of ICI  as  of the  dates thereof  and  the
results  of operations and changes in financial position thereof for the periods
then ended,  in  each case  in  conformity with  generally  accepted  accounting
principles,  consistently applied, except  as noted therein.  Since December 31,
1995, there  has been  no  change in  accounting  principles applicable  to,  or
methods  of accounting utilized  by, ICI, except  as noted in  the ICI Financial
Statements or as is required under generally accepted accounting principles. The
statements of income and cash flow contained in the ICI Financial Statements  do
not  contain any  material items  of special  or nonrecurring  income, except as
specifically identified therein.  On or  before the  20th day  of each  calendar
month  following the date of this Agreement,  ICI shall deliver to MMI unaudited
financial statements (including  a balance  sheet and statements  of income  and
cash  flow) as of the  end of the previous  month and for the  year to date. The
books and records of ICI have been  and are being maintained in accordance  with
good business
 
                                      A-14
<PAGE>
practice,  reflect  only valid  transactions, are  complete  and correct  in all
material respects, and present fairly in all material respects the basis for the
financial position  and  results of  operations  of ICI  set  forth in  the  ICI
Financial Statements.
 
    4.10.  ABSENCE OF CERTAIN CHANGES.  Since December 31, 1995, ICI and the ICI
Subsidiaries  have not, except as may  result from the transactions contemplated
by this Agreement:
 
        (a) suffered any  material adverse  change in the  business, results  of
    operations,  working capital, assets, liabilities or condition (financial or
    otherwise) or  the  manner  of  conducting  the  business  of  ICI  and  ICI
    Subsidiaries  taken as  a whole,  except as  reflected on  the ICI Financial
    Statements and except for such changes  that would not have an ICI  Material
    Adverse Effect;
 
        (b)  suffered any damage or destruction to  or loss of the assets of ICI
    or any ICI Subsidiary, whether or  not covered by insurance, which would  be
    expected to result in an ICI Material Adverse Effect;
 
        (c)  forgiven, compromised,  canceled, released, waived  or permitted to
    lapse any material rights or claims;
 
        (d) entered into  or terminated  any material  agreement, commitment  or
    transaction, or agreed or made any changes in material leases or agreements,
    or suffered any of the foregoing to occur, other than renewals or extensions
    thereof and leases, agreements, transactions and commitments entered into in
    the ordinary course of business, except in any such case as does not have an
    ICI Material Adverse Effect;
 
        (e)  written  up, written  down or  written  off the  book value  of any
    material amount of assets;
 
        (f) declared, paid or set aside for payment any dividend or distribution
    with respect to ICI's capital stock;
 
        (g) redeemed,  purchased  or otherwise  acquired,  or sold,  granted  or
    otherwise disposed of, directly or indirectly, any of ICI's capital stock or
    securities  (other than shares  issued upon exercise of  the ICI Options) or
    any rights to acquire such capital stock or securities, or agreed to changes
    in the terms and conditions of any such rights outstanding as of the date of
    this Agreement, except as provided in Section 5.2 hereof;
 
        (h) increased the compensation of or  paid any bonuses to any  employees
    or  contributed to any employee benefit  plan, other than in accordance with
    established policies, practices  or requirements and  except as provided  in
    Section 5.2 hereof;
 
        (i)  entered into any employment, consulting, compensation or collective
    bargaining agreement with any person or group, except in any such case which
    does not have an ICI Material Adverse Effect on the Surviving Corporation;
 
        (j)  entered into, adopted or  amended any employee benefit plan  except
    in any such case as does not have an ICI Material Adverse Effect; or
 
        (k) entered into any agreement to do any of the foregoing.
 
    4.11.   NO  MATERIAL UNDISCLOSED LIABILITIES.   There are  no liabilities or
obligations of ICI  or the  ICI Subsidiaries  of any  nature, whether  absolute,
accrued, contingent or otherwise, other than:
 
        (a) the liabilities and obligations that are fully reflected, accrued or
    reserved against in the ICI Financial Statements, for which the reserves are
    appropriate  and reasonable, or incurred in  the ordinary course of business
    and consistent with past practices since December 31, 1995; or
 
        (b) liabilities  or  obligations  not inconsistent  with  the  terms  of
    Section 5.2.
 
    4.12.   TAX RETURNS; TAXES.  Each of  ICI and the ICI Subsidiaries have duly
and timely filed all federal, state,  county, local and foreign tax returns  and
reports  required to  be filed  by it, including  those with  respect to income,
payroll, property, withholding, social security, unemployment, franchise, excise
and sales taxes and  all such returns  and reports are true  and correct in  all
material respects;
 
                                      A-15
<PAGE>
have  either paid  in full all  taxes that have  become due as  reflected on any
return or report  and any interest  and penalties with  respect thereto or  have
fully  accrued on its books or have  established adequate reserves for all taxes
payable  but  not  yet  due;  and  have  made  cash  deposits  with  appropriate
governmental  authorities  representing estimated  payments of  taxes, including
income taxes and employee  withholding tax obligations. Except  as set forth  in
ICI's Disclosure Schedule, no unsatisfied deficiency, delinquency or default for
any  tax,  assessment  or  governmental charge  has  been  claimed,  proposed or
assessed  against  ICI  or  the  ICI  Subsidiaries,  nor  has  ICI  or  the  ICI
Subsidiaries  received notice  of any  such deficiency,  delinquency or default.
Except  as  set  forth  in  ICI's  Disclosure  Schedule,  there  is  no   audit,
examination,  deficiency  or refund  litigation  or matter  in  controversy with
respect to  any  taxes.  ICI and  the  ICI  Subsidiaries have  no  material  tax
liabilities other than those reflected on the ICI Financial Statements and those
arising  in the ordinary course of business  since March 31, 1996. ICI will make
available to MMI true, complete and correct copies of ICI's consolidated federal
tax returns for the last  five years and make  available such other tax  returns
requested by MMI.
 
    4.13.   MATERIAL CONTRACTS.  ICI will furnish or make available accurate and
complete copies of the ICI  Material Contracts to MMI.  All of the ICI  Material
Contracts  are valid, binding and enforceable. There is not under any of the ICI
Material Contracts any existing  breach, default or event  of default by ICI  or
any  of the ICI Subsidiaries nor event that with notice or lapse of time or both
would constitute a breach, default or event of default by ICI or any of the  ICI
Subsidiaries nor does ICI know of, and ICI has not received notice of, or made a
claim  with respect to, any  breach or default by  any other party thereto which
would, severally or in  the aggregate, have an  ICI Material Adverse Effect.  As
used  herein, the term "ICI Material Contracts"  shall mean all of contracts and
agreements filed, or required to be filed, as exhibits to ICI's Annual Report on
Form 10-K for the  year ended December  31, 1995 and  any contract or  agreement
entered  into since December 31, 1995 which would  be required to be filed as an
exhibit to ICI's Annual  Report on Form  10-K for the  year ending December  31,
1996,  any note, bond, mortgage, indenture, license agreement, lease, employment
agreement or other  instrument or  obligation to  which any  of ICI  or the  ICI
Subsidiaries  is a party or by  which any of them or  any of their properties or
assets may be subject.
 
    4.14.  LITIGATION AND GOVERNMENT CLAIMS.  Except as disclosed in the ICI SEC
Reports, there is no pending suit,  claim, action or litigation, whether  civil,
criminal  or  administrative, arbitration  or  other proceeding  or governmental
investigation or inquiry, or any pending change in any environmental, zoning  or
building  laws, regulations or ordinances against ICI or the ICI Subsidiaries to
which their businesses or  assets are subject which  would, severally or in  the
aggregate,  reasonably be expected to result  in an ICI Material Adverse Effect.
To  the  knowledge  of  ICI,  there  are  no  such  proceedings  threatened   or
contemplated,  or any unasserted  claims (whether or  not the potential claimant
may be aware of the claim) of any  nature that might be asserted against ICI  or
the  ICI Subsidiaries which  would, severally or  in the aggregate,  have an ICI
Material Adverse Effect. Neither  ICI nor any ICI  Subsidiary is subject to  any
judgment,  decree, injunction, rule  or order of any  court, or any governmental
restriction applicable to ICI or any  ICI Subsidiary which is reasonably  likely
(i)  to  have  an  ICI Material  Adverse  Effect  or (ii)  to  cause  a material
limitation on ICI's ability to operate the business of MMI after the Closing.
 
    4.15.  COMPLIANCE WITH  LAWS.  ICI  and the ICI  Subsidiaries each have  all
material  authorizations,  approvals,  licenses  and orders  to  carry  on their
respective businesses as  they are  now being conducted,  to own  or hold  under
lease  the properties and assets they own or hold under lease and to perform all
of their obligations under the agreements to which they are a party, except  for
instances  which would not have an ICI  Material Adverse Effect. ICI and the ICI
Subsidiaries  have  been  and  are  in  compliance  with  all  applicable  laws,
regulations  and administrative orders of any  country, state or municipality or
of any subdivision of any thereof to which their respective businesses and their
employment of labor or their use or  occupancy of properties or any part  hereof
are  subject, the failure to obtain or the  violation of which would have an ICI
Material Adverse Effect.
 
                                      A-16
<PAGE>
    4.16.  EMPLOYEE BENEFIT PLANS.  Each employee benefit plan, as such term  is
defined  in Section 3(3) of ERISA, of  ICI or the ICI Subsidiaries (collectively
the "ICI Employee Plans") complies in all material respects with all  applicable
requirements  of ERISA and the  Code and other applicable  laws. None of the ICI
Employee Plans is an employee pension benefit plan subject to Title IV or Part 3
of Subtitle B of  Title I of ERISA  or a multiemployer plan,  as such terms  are
defined  in  ERISA.  Neither  ICI  nor any  ICI  Subsidiary,  nor  any  of their
respective directors, officers, employees or agents has, with respect to any ICI
Employee Plan, engaged in any "prohibited transaction," as such term is  defined
in  the Code or ERISA, nor has any  ICI Employee Plan engaged in such prohibited
transaction which could  result in any  taxes or penalties  or other  prohibited
transactions, which in the aggregate could have an ICI Material Adverse Effect.
 
    4.17.    LABOR  RELATIONS.   Each  of ICI  and  the ICI  Subsidiaries  is in
compliance in all respects with all federal and state laws respecting employment
and employment practices, terms and  conditions of employment, wages and  hours,
and  is not engaged in any unfair  labor or unlawful employment practice, except
in any case which  would not have  an ICI Material Adverse  Effect. There is  no
unlawful  employment practice discrimination  charge pending before  the EEOC or
EEOC recognized  state "referral  agency."  There is  no unfair  labor  practice
charge  or complaint against ICI  or any of the  ICI Subsidiaries pending before
the National Labor Review Board. There is no labor strike, dispute, slowdown  or
stoppage  actually pending  or, to the  knowledge of ICI,  threatened against or
involving or affecting ICI or any of the ICI Subsidiaries and no National  Labor
Review   Board  representation  question   exists  respecting  their  respective
employees. No grievances  or arbitration  proceeding is pending  and no  written
claim  therefor exists, except in any case  which would not have an ICI Material
Adverse Effect.
 
    4.18.  INTELLECTUAL  PROPERTY.   ICI and the  ICI Subsidiaries  own or  have
valid,  binding and  enforceable rights  to use  all patents,  trademarks, trade
names, service  marks,  service  names, copyrights,  applications  therefor  and
licenses  or other rights in respect  thereof ("ICI Intellectual Property") used
or held for use in connection with the business of ICI or the ICI  Subsidiaries,
without  any conflict with the rights of others, except for such conflicts as do
not have  an  ICI Material  Adverse  Effect. Neither  ICI  nor any  of  the  ICI
Subsidiaries  has received  any notice  from any  other person  pertaining to or
challenging the right  of ICI  or any  of the ICI  Subsidiaries to  use any  ICI
Intellectual Property or any trade secrets, proprietary information, inventions,
know-how,  processes and procedures owned or used  or licensed to ICI or the ICI
Subsidiaries, except with respect to rights  the loss of which, individually  or
in the aggregate, would not have an ICI Material Adverse Effect.
 
    4.19.   PROPERTIES.  ICI  and the ICI Subsidiaries  have good and marketable
title, free and clear of all liens,  claims or encumbrances (other than for  the
ICI  Material Contracts) to all of  their material properties and assets whether
tangible or intangible, real, personal or mixed, reflected on the ICI  Financial
Statements  as being owned by ICI or the ICI Subsidiaries. All buildings and all
fixtures, equipment and  other property  and assets  which are  material to  its
business  held under leases or  subleases by any of  ICI or the ICI Subsidiaries
are held under valid instruments enforceable in accordance with their respective
terms. Substantially all of ICI's and ICI Subsidiaries' equipment and properties
have been well maintained and are in good and serviceable condition,  reasonable
wear and tear excepted.
 
    4.20.    INSURANCE.   ICI  and each  of  the ICI  Subsidiaries  is presently
insured, and during each of  the past five (5)  calendar years has been  insured
for  reasonable  amounts  against such  risks  as companies  engaged  in similar
business would,  in  accordance  with good  business  practice,  customarily  be
insured.
 
    4.21.    ENVIRONMENTAL  MATTERS.    ICI  and  the  ICI  Subsidiaries  are in
compliance with all applicable federal,  state, local and foreign laws  relating
to   emissions,  discharges  and  releases   of  hazardous  materials  into  the
environment and the generation, treatment, storage, transportation and  disposal
of  hazardous waste, including, without limitation, any applicable provisions of
the Resource  Conservation  and  Recovery  Act  of  1976  or  the  Comprehensive
Environmental Response, Compensation and
 
                                      A-17
<PAGE>
Liability Act of 1980, except as would not cause an ICI Material Adverse Effect.
There  are no conditions at, on, under or  related to any real property owned or
operated by ICI or the ICI  Subsidiaries which presently or potentially poses  a
significant  hazard to human  health or the  environment, and there  has been no
production, use, treatment, storage, transportation or disposal by ICI or any of
the ICI Subsidiaries of any Hazardous Substance (as hereinbelow defined) nor any
release or threatened  release by  ICI or any  ICI subsidiary  of any  Hazardous
Substance.  No Hazardous Substance is now or ever  has been stored by ICI or the
ICI Subsidiaries  in  underground  tanks,  pits  or  surface  impoundments.  For
purposes of the foregoing, the term "Hazardous Substance" means any hazardous or
toxic  substance, material  or waste  (including, without  limitation, petroleum
products and by-products) which is  regulated by any applicable federal,  state,
local or foreign authority.
 
    4.22.   ACCOUNTING, TAX AND REGULATORY MATTERS.   Neither ICI nor any of the
ICI Subsidiaries has taken or agreed to take any action or has any knowledge  of
any  fact  or circumstances  that  would prevent  the  transactions contemplated
hereby from qualifying  for pooling  of interest  accounting treatment  or as  a
reorganization within the meaning of Section 368 of the Code.
 
    4.23.   ACCURACY OF DISCLOSURES.  None of the information supplied by ICI or
any ICI  Subsidiary  for  inclusion  in  the  Registration  Statement  or  Proxy
Statement  will,  in  the case  of  the  Proxy Statement  or  any  amendments or
supplements thereto,  at the  time of  mailing of  the Proxy  Statement and  any
amendments   or  supplements  thereto,  and  at  the  time  of  the  meeting  of
stockholders of MMI in accordance therewith, or, in the case of the Registration
Statement at the time  it becomes effective and  at the Effective Date,  contain
any  untrue statement  of a  material fact  or omit  to state  any material fact
required to  be stated  therein or  necessary in  order to  make the  statements
therein,  in  light  of  the  circumstances  under  which  they  are  made,  not
misleading. The Registration Statement  will comply as to  form in all  material
respects  with  the  provisions  of  the  Securities  Act,  and  the  rules  and
regulations promulgated thereunder. The Proxy  Statement will comply as to  form
in  all material respects with the provisions  of the Exchange Act and the rules
and regulations thereunder.
 
    4.24.  BROKERS AND FINDERS.  None of ICI, the ICI Subsidiaries or, to  ICI's
knowledge,  any  of  their  respective  officers,  directors  and  employees has
employed any broker, finder or investment bank or incurred any liability for any
investment banking fees,  financial advisory  fees, brokerage  fees or  finders'
fees  in connection with  the transactions contemplated  hereby, except that ICI
has engaged Morgan Keegan & Company,  Inc. as its financial advisor. Other  than
the foregoing arrangements and other than certain fees that may be paid to MMI's
financial  advisors as contemplated by Section 3.26  hereof, ICI is not aware of
any claim for payment of any finder's fees, brokerage or agent's commissions  or
other  like  payments  in  connection  with  the  negotiations  leading  to this
Agreement or the consummation of the transactions contemplated hereby.
 
                                   ARTICLE 5.
                        CERTAIN COVENANTS AND AGREEMENTS
 
    5.1.  CONDUCT OF  BUSINESS BY MMI.   From the date  hereof to the  Effective
Date,  MMI will, and  will cause each  MMI Subsidiary to,  except as required in
connection with  the Merger  and  the other  transactions contemplated  by  this
Agreement  and except  as otherwise  disclosed in  MMI's Disclosure  Schedule or
consented to in writing by ICI:
 
        (a) Carry  on  its  business  in the  ordinary  and  regular  course  in
    substantially  the same manner as heretofore conducted and not engage in any
    new line of business or enter into any agreement, transaction or activity or
    make any  commitment except  those in  the ordinary  and regular  course  of
    business and not otherwise prohibited under this Section 5.1;
 
        (b)   Neither  change   nor  amend   its  Certificate   or  Articles  of
    Incorporation or Bylaws;
 
        (c) Other than pursuant  to the exercise of  the Options outstanding  on
    the  date hereof, not  issue, sell or  grant options, warrants  or rights to
    purchase or subscribe  to, or enter  into any arrangement  or contract  with
    respect  to the  issuance or  sale of  any of  the capital  stock of  MMI or
 
                                      A-18
<PAGE>
    any of the  MMI Subsidiaries or  rights or obligations  convertible into  or
    exchangeable  for any shares of  the capital stock of MMI  or any of the MMI
    Subsidiaries and not alter the terms of any presently outstanding options or
    the MMI Stock  Option Plan or  make any changes  (by split-up,  combination,
    reorganization or otherwise) in the capital structure of MMI or any of MMI's
    Subsidiaries;
 
        (d)  Not declare,  pay or  set aside for  payment any  dividend or other
    distribution in respect of the capital  stock or other equity securities  of
    MMI  and not redeem, purchase or otherwise acquire any shares of the capital
    stock or other securities of MMI or any of the MMI Subsidiaries or rights or
    obligations convertible into or exchangeable  for any shares of the  capital
    stock  or  other  securities  of  MMI or  any  of  the  MMI  Subsidiaries or
    obligations convertible into such, or any options, warrants or other  rights
    to purchase or subscribe to any of the foregoing;
 
        (e)  Not  acquire or  enter into  any agreement  to acquire,  by merger,
    consolidation or purchase  of stock  or assets,  any business  or entity  or
    product line (other than the pending asset acquisitions described in the MMI
    Disclosure Schedule);
 
        (f)  Use  its  reasonable  efforts  to  preserve  intact  the  corporate
    existence,  goodwill  and   business  organization  of   MMI  and  the   MMI
    Subsidiaries,  to  keep  the  officers  and employees  of  MMI  and  the MMI
    Subsidiaries available to MMI and to  preserve the relationships of MMI  and
    the  MMI Subsidiaries with  suppliers, customers and  others having business
    relations with any of them, except  for such instances which would not  have
    an MMI Material Adverse Effect;
 
        (g)  Not  (i)  create, incur  or  assume any  long-term  debt (including
    obligations in  respect  of capital  leases  which individually  or  in  the
    aggregate  involve annual payments  in excess of $10,000)  or, except in the
    ordinary course of business under existing lines of credit, create, incur or
    assume any  short-term  debt for  borrowed  money, (ii)  assume,  guarantee,
    endorse  or  otherwise  become  liable  or  responsible  (whether  directly,
    contingently or otherwise)  for the  obligations of any  other person  other
    than  MMI Subsidiaries, (iii) make any loans or advances to any other person
    other than the MMI Subsidiaries, except  in the ordinary course of  business
    and  consistent with past  practice, or (iv)  make any capital contributions
    to, or investments in, any person other than the MMI Subsidiaries; provided,
    however, that MMI may  incur long-term debt under  its credit facility  with
    Chemical Bank, as may be amended upon terms not materially less favorable to
    MMI  in connection with the pending  asset acquisitions described in the MMI
    Disclosure Schedule up to an aggregate principal amount of $10.0 million; or
 
        (h) Not (i) enter into, modify or extend in any manner the terms of  any
    employment,  severance  or  similar  agreements  with  officers,  directors,
    employees  and  sales  representatives,  (ii)  grant  any  increase  in  the
    compensation  of officers or directors, whether  now or hereafter payable or
    (iii) grant any increase in the  compensation of any other employees  except
    for compensation increases in the ordinary course of business and consistent
    with past practice.
 
    In  connection with the continued  operation of the business  of MMI and the
MMI Subsidiaries between the date of this Agreement and the Effective Date,  MMI
shall  confer in good faith and on a regular and frequent basis with one or more
representatives of ICI designated  in writing to  report operational matters  of
materiality  and the general status of ongoing operations. In addition, MMI will
allow ICI  employees or  agent to  be  present at  MMI's business  locations  to
observe  the business and operations of MMI and the MMI Subsidiaries. MMI agrees
to participate in  the staff meetings  of ICI as  may be requested  by ICI.  MMI
acknowledges  that ICI does not and will not  waive any rights it may have under
this Agreement as a  result of such consultations  nor shall ICI be  responsible
for  any decisions made by MMI's officers  and directors with respect to matters
which are the subject of such consultation.
 
                                      A-19
<PAGE>
    5.2.  CONDUCT OF  BUSINESS BY ICI.   From the date  hereof to the  Effective
Date, ICI will, and will cause Merger Corp. and each of the ICI Subsidiaries to,
except  as required  in connection  with the  Merger and  the other transactions
contemplated by  this  Agreement and  except  as otherwise  disclosed  in  ICI's
Disclosure Schedule or consented to in writing by MMI:
 
        (a)  Carry  on its  businesses  in the  ordinary  and regular  course in
    substantially the same manner as heretofore conducted and not engage in  any
    new line of business;
 
        (b)  Except in  instances which would  not have an  ICI Material Adverse
    Effect,  neither  change   nor  amend   its  Certificate   or  Articles   of
    Incorporation or Bylaws;
 
        (c)  Other than pursuant  to the exercise of  ICI Options outstanding on
    the date hereof, not issue, sell or grant options (other than employee stock
    options granted under ICI's  existing stock option plans  as such plans  may
    hereafter  be amended), warrants  or rights to purchase  or subscribe to, or
    enter into any arrangement or contract with respect to the issuance or  sale
    of  more  than 500,000  shares  of the  capital stock  of  ICI or  rights or
    obligations convertible into or exchangeable  for any shares of the  capital
    stock of ICI;
 
        (d)  Not declare,  pay or  set aside for  payment any  dividend or other
    distribution in respect of the capital  stock or other equity securities  of
    ICI  and not redeem, purchase or otherwise acquire any shares of the capital
    stock or other securities of ICI  or rights or obligations convertible  into
    or  exchangeable for any shares of the  capital stock or other securities of
    ICI or obligations convertible into such, or any options, warrants or  other
    rights to purchase or subscribe to any of the foregoing;
 
        (e)  Use  its  reasonable  efforts  to  preserve  intact  the  corporate
    existence,  goodwill  and   business  organization  of   ICI  and  the   ICI
    Subsidiaries, to keep the executive officers of ICI and the ICI Subsidiaries
    available  to  ICI and  to preserve  the  relationships of  ICI and  the ICI
    Subsidiaries with suppliers, customers and others having business  relations
    with  any of  them, except for  such instances  which would not  have an ICI
    Material Adverse Effect;
 
        (f) Not (i) create, incur or assume any long-term debt or, except in the
    ordinary course of business under existing lines of credit, create, incur or
    assume any  short-term  debt for  borrowed  money, (ii)  assume,  guarantee,
    endorse  or  otherwise  become  liable  or  responsible  (whether  directly,
    contingently or otherwise)  for the  obligations of any  other person  other
    than  ICI  Subsidiaries  (except  in the  ordinary  course  of  business and
    consistent with past  practice), (iii)  make any  loans or  advances to  any
    other  person other than the ICI Subsidiaries, except in the ordinary course
    of business and  consistent with  past practice,  or (iv)  make any  capital
    contributions  to,  or  investments  in,  any  person  other  than  the  ICI
    Subsidiaries, except in each  case where such action  would not have an  ICI
    Material Adverse Effect; or
 
        (g)  Except in  instances which would  not have an  ICI Material Adverse
    Effect, not enter  into, modify or  extend in  any manner the  terms of  any
    employment,  severance or similar agreements with officers and directors nor
    grant any increase in the compensation of officers, directors or  employees,
    whether  now or hereafter payable (except  for compensation increases in the
    ordinary course of business and consistent with past practice).
 
    In connection with the  continued operation of the  business of ICI and  the
ICI  Subsidiaries between the date of this Agreement and the Effective Date, ICI
shall confer in good faith and on a regular and frequent basis with one or  more
representatives  of MMI designated  in writing to  report operational matters of
materiality and the general status of ongoing operations. ICI acknowledges  that
MMI does not and will not waive any rights it may have under this Agreement as a
result of such consultations nor shall MMI be responsible for any decisions made
by ICI's officers and directors with respect to matters which are the subject of
such consultation.
 
    5.3.   NOTICE OF ANY  MATERIAL CHANGE.  Each of  MMI and ICI shall, promptly
after the first  notice or  occurrence thereof but  not later  than the  Closing
Date, advise the other in writing of any event or
 
                                      A-20
<PAGE>
the   existence  of  any  state  of  facts  that  would  (i)  make  any  of  its
representations and warranties in this Agreement untrue in any material respect,
or (ii) otherwise  constitute an  MMI Material  Adverse Effect  or ICI  Material
Adverse Effect, as the case may be.
 
    5.4.  INSPECTION AND ACCESS TO INFORMATION.
 
        (a)  Between the  date of  this Agreement  and the  Effective Date, each
    party hereto will, and will cause each of its subsidiaries to, provide  each
    other   party   and   its   accountants,   counsel   and   other  authorized
    representatives full  access, during  reasonable  business hours  and  under
    reasonable  circumstances  to  any  and  all  of  its  premises, properties,
    contracts, commitments, books, records and other information (including  tax
    returns  filed and  those in  preparation) and  will cause  their respective
    officers to furnish to  the other party  and its authorized  representatives
    any  and all financial,  technical and operating  data and other information
    pertaining to its  business, as  each other party  shall from  time to  time
    request.
 
        (b) Those certain letter agreements dated February 22, 1996 and March 8,
    1996  relative to,  without limitation,  the protection  of the confidential
    information of MMI  (the "MMI  CA") and  ICI (the  "ICI CA"),  respectively,
    shall  remain in full  force and effect  except as modified  by the terms of
    this Agreement. In the event of  any inconsistency between the terms of  the
    MMI  CA and the  ICI CA, on the  one hand, and this  Agreement, on the other
    hand, this Agreement shall control.
 
    5.5.  ANTITRUST LAWS.   As soon  as practicable, each of  ICI and MMI  shall
make  any and all filings which are required  under the HSR Act. Each of ICI and
MMI will assist the other as may be reasonably requested in connection with  the
preparation of such filings.
 
    5.6.  POOLING.  From and after the date hereof and until the Effective Date,
neither ICI nor MMI nor any of their respective subsidiaries or other affiliates
shall  (i) knowingly take any action, or knowingly fail to take any action, that
would jeopardize the  treatment of  the Merger as  a "pooling  of interest"  for
accounting purposes or (ii) knowingly take any action, or knowingly fail to take
any   action,  that   would  jeopardize  qualification   of  the   Merger  as  a
reorganization within the meaning of Section 368(a)(2)(E) of the Code.
 
    5.7.  REGISTRATION STATEMENT AND PROXY STATEMENT.
 
        (a) ICI shall promptly prepare and file a registration statement on Form
    S-4 (which registration statement, in the  form it is declared effective  by
    the  SEC, together with  any and all amendments  and supplements thereto and
    all information incorporated by reference therein, is referred to herein  as
    the  "Registration Statement") under  and pursuant to  the provisions of the
    Securities Act for the purpose of registering ICI Common Stock to be  issued
    in the Merger. ICI will use its reasonable efforts to receive and respond to
    the  comments of  the SEC, and  each of ICI  and MMI shall  promptly mail to
    their respective stockholders  the proxy  statement in  its definitive  form
    contained  in the Registration Statement (the "Proxy Statement"). Such Proxy
    Statement shall  also  serve  as  the  prospectus  to  be  included  in  the
    Registration Statement. In addition, MMI shall cause its auditors to prepare
    and  deliver such  reports and  consents as  ICI may  reasonably require for
    inclusion in the Registration Statement and such other filings as ICI  deems
    necessary,  including,  without limitation,  such  auditors' consent  to the
    incorporation by reference of such auditors' reports into ICI's registration
    statements on Form S-8.
 
        (b) Each of ICI and MMI agrees to provide as promptly as practicable  to
    the  other such information concerning its business and financial statements
    and affairs  as, in  the reasonable  judgment  of the  other party,  may  be
    required  or appropriate for inclusion in the Registration Statement and the
    Proxy Statement or in  any amendments or supplements  thereto, and to  cause
    its  counsel and auditors to cooperate with the other's counsel and auditors
    in the preparation of the Registration Statement and the Proxy Statement.
 
        (c) At the time the Registration Statement becomes effective and at  the
    Effective   Date,  as  such  Registration   Statement  is  then  amended  or
    supplemented, and at  the time the  Proxy Statement is  mailed to ICI's  and
    MMI's    respective   stockholders,   such    Registration   Statement   and
 
                                      A-21
<PAGE>
    Proxy Statement will  (i) not  contain any  untrue statement  of a  material
    fact,  or omit to state  any material fact required  to be stated therein as
    necessary, in  order  to  make  the statements  therein,  in  light  of  the
    circumstances  under which they were made, not misleading and (ii) comply in
    all material respects with the provisions of the Securities Act and Exchange
    Act, as  applicable, and  the rules  and regulations  thereunder;  provided,
    however,  no representation is made by ICI or MMI with respect to statements
    made in the Registration Statement and Proxy Statement based on  information
    supplied  by the  other party  expressly for  inclusion or  incorporation by
    reference in the  Proxy Statement or  Registration Statement or  information
    omitted with respect to the other party.
 
    5.8.  STOCKHOLDERS' MEETING.
 
        (a)  Each of MMI and ICI shall call  a meeting of its stockholders to be
    held as soon as practicable after the date hereof for the purpose of  voting
    upon matters relating to this Agreement.
 
        (b)  MMI  will  use its  reasonable  efforts to  hold  its stockholders'
    meeting as promptly as practicable as may  be directed by ICI and to  obtain
    stockholder  approval and will, through its Board of Directors, recommend to
    its  stockholders  approval  of  the  Merger  and  this  Agreement  at   the
    stockholders'  meeting;  provided,  however,  that  such  recommendation  is
    subject to any  action taken  by, or  upon the  authority of,  the Board  of
    Directors  of  MMI in  the exercise  of its  good faith  judgment as  to its
    fiduciary duties to the stockholders of MMI exercised in accordance with the
    provisions of Section 5.13.
 
        (c) ICI  will  use its  reasonable  efforts to  hold  its  stockholders'
    meeting  as promptly as  practicable for the purpose  of acting upon matters
    relating to  this  Agreement  and  will, through  its  Board  of  Directors,
    recommend  to its stockholders approval of  the issuance of ICI Common Stock
    as set forth in this Agreement; provided, however, that such  recommendation
    is  subject to any action  taken by, or upon the  authority of, the Board of
    Directors of  ICI in  the exercise  of its  good faith  judgment as  to  its
    fiduciary duties to the stockholders of ICI.
 
    5.9.  LISTING APPLICATION.  ICI will file a listing application with the NMS
to  approve for listing, subject  to official notice of  issuance, the shares of
ICI Common  Stock to  be issued  in the  Merger. ICI  shall use  its  reasonable
efforts to cause the shares of ICI Common Stock to be issued in the Merger to be
approved  for listing on the NMS, subject  to official notice of issuance, prior
to the Effective Date.
 
    5.10.  AFFILIATES.  At  least 30 days prior to  the Closing Date, MMI  shall
deliver  to ICI a letter identifying all persons who are, at the time the Merger
is submitted to  a vote  to the  stockholders of  MMI, "affiliates"  of MMI  for
purposes  of Rule 145 under the Securities Act. Each person who is identified as
an "affiliate" in such letter will deliver to ICI on or before 30 days prior  to
the  Closing Date a written statement, in form satisfactory to ICI and MMI, that
such person will not offer to sell, transfer or otherwise dispose of any of  the
shares of MMI Common Stock or ICI Common Stock issued to such person, except (i)
in accordance with the applicable provisions of the Securities Act and the rules
and  regulations  thereunder  and  (ii) until  such  time  as  financial results
covering at  least 30  days of  combined operations  of ICI  and MMI  have  been
published  (the "Publication Date"). ICI hereby covenants  to file a Form 8-K or
10-Q  (as  applicable)  satisfying  such  publication  requirement  as  soon  as
practicable after the completion of any month which contains at least 30 days of
combined  operations. ICI shall be entitled to place legends on any certificates
of ICI  Common Stock  issued to  such affiliates  to restrict  transfer of  such
shares as set forth above.
 
    5.11.   REASONABLE EFFORTS; FURTHER ASSURANCES; COOPERATION.  Subject to the
other provisions of  this Agreement,  the parties  hereto shall  each use  their
reasonable  efforts to perform their obligations herein and to take, or cause to
be taken or do, or cause to  be done, all things necessary, proper or  advisable
under  applicable  law  to  obtain  all  regulatory  approvals  and  satisfy all
conditions to the obligations of the  parties under this Agreement and to  cause
the  Merger and  the other  transactions contemplated  herein to  be carried out
promptly in accordance with the terms hereof and shall
 
                                      A-22
<PAGE>
cooperate fully  with  each  other and  their  respective  officers,  directors,
employees,  agents, counsel, accountants and  other designees in connection with
any steps required to be taken as  a part of their respective obligations  under
this Agreement, including without limitation:
 
        (a)  MMI  and  ICI  shall promptly  make  their  respective  filings and
    submissions and shall take,  or cause to  be taken, all  actions and do,  or
    cause to be done, all things necessary, proper or advisable under applicable
    laws and regulations to comply with the provisions of the HSR Act.
 
        (b)  Each party shall give prompt written notice to the other of (i) the
    occurrence, or failure to  occur, of any event  which occurrence or  failure
    would  be likely to cause  any representation or warranty  of MMI or ICI, as
    the case may be, contained in this  Agreement to be untrue or inaccurate  in
    any  material respect at any time from the date hereof to the Effective Date
    or that will or may result in  the failure to satisfy any of the  conditions
    specified  in Articles 6  and 7 and (ii)  any failure of MMI  or ICI, as the
    case may be, to comply with or satisfy any covenant, condition or  agreement
    to be complied with or satisfied by it hereunder.
 
        (c)  MMI  has  obtained  (and  will  promptly  deliver  copies  to  ICI)
    agreements from Messrs. Vought, Lee and  Berry and Micro Partners, L.P.  and
    Kitty  Hawk Capital  Limited Partnership,  II (i)  not to  perfect appraisal
    rights with respect  to the Merger  (to the extent  applicable) and (ii)  to
    vote  all shares of  MMI Common Stock  beneficially owned by  such person in
    favor of the  approval of this  Agreement and the  Merger (which  agreements
    shall  contain a  proxy in favor  of ICI with  respect to the  shares of MMI
    Common Stock beneficially owned by such persons).
 
    5.12.  PUBLIC ANNOUNCEMENTS.   The timing and  content of all  announcements
regarding any aspect of this Agreement or the Merger to the financial community,
government  agencies, employees or  the general public  shall be mutually agreed
upon in  advance  (unless  ICI or  MMI  is  advised by  counsel  that  any  such
announcement or other disclosure not mutually agreed upon in advance is required
to be made by law or applicable stock exchange rule and then only after making a
reasonable  attempt to comply  with the provisions of  this Section). Subject to
the preceding sentence,  the parties acknowledge  their respective intention  to
make  a public announcement  of the transactions  contemplated by this Agreement
promptly following the execution and delivery of this Agreement.
 
    5.13.  NO SOLICITATIONS.  From the  date hereof until the Effective Date  or
until  this Agreement is terminated or  abandoned as provided in this Agreement,
neither MMI nor  any of the  MMI Subsidiaries shall  directly or indirectly  (i)
solicit,  initiate or encourage discussion with  or (ii) enter into negotiations
or agreements with, or  furnish any information that  is not publicly  available
to,  any corporation, partnership,  person or other entity  or group (other than
ICI, an affiliate of  ICI or their authorized  representatives pursuant to  this
Agreement)  concerning any  proposal for a  merger, sale  of substantial assets,
sale of shares of stock or securities or other takeover or business  combination
transaction  (the  "Acquisition  Proposal")  involving MMI  or  any  of  the MMI
Subsidiaries, and  MMI  will  exercise  its  reasonable  efforts  to  cause  its
officers,  directors, advisors and  its financial and  legal representatives and
consultants not to take any action contrary to the foregoing provisions of  this
sentence; provided, however, that MMI, its officers, directors, advisors and its
financial and legal representatives and consultants shall not be prohibited from
taking any action described in (ii) above to the extent such action is taken by,
or  upon the authority of, the Board of Directors of MMI in the exercise of good
faith judgment as to its fiduciary duties to the stockholders of MMI based  upon
the  advice of independent legal counsel  in recognition of, without limitation,
the long-term corporate objectives of MMI  sought to be achieved by the  Merger.
MMI  will notify ICI promptly in writing if MMI becomes aware that any inquiries
or proposals  are  received  by,  any  information  is  requested  from  or  any
negotiations or discussions are sought to be initiated with, MMI with respect to
an  Acquisition  Proposal, and  MMI shall  promptly deliver  to ICI  any written
inquiries or proposals received by MMI relating to an Acquisition Proposal. Each
time, if any, that the Board of  Directors of MMI determines that it must  enter
into  negotiations  with,  or  furnish  any  information  that  is  not publicly
available to,  any corporation,  partnership, person  or other  entity or  group
(other  than  ICI,  an affiliate  of  ICI or  their  authorized representatives)
concerning any Acquisition  Proposal, MMI will  give ICI prompt  notice of  such
determination  (which shall include  a copy of  the non-public information which
MMI has
 
                                      A-23
<PAGE>
delivered to such  other person or  entity) and shall  require the recipient  of
such  information  to execute  and deliver  to  MMI a  confidentiality agreement
substantially identical to the MMI CA as a condition precedent to furnishing any
such information (failing which, without limitation  of any other right of  ICI,
the fifth paragraph of the MMI CA shall no longer be of any force or effect). In
the event of the execution of any Acquisition Proposal by MMI, ICI may terminate
this  Agreement in the exercise of its discretion. The second preceding sentence
of this Section shall survive any termination of this Agreement.
 
                                   ARTICLE 6.
                   CONDITIONS PRECEDENT TO OBLIGATIONS OF MMI
 
    Except as may be  waived by MMI,  the obligations of  MMI to consummate  the
transactions contemplated by this Agreement shall be subject to the satisfaction
on or before the Closing Date of each of the following conditions:
 
    6.1.   COMPLIANCE.  ICI shall have, or shall have caused to be, satisfied or
complied with and performed in all  material respects all terms, covenants,  and
conditions  of this  Agreement to  be complied  with or  performed by  ICI on or
before the Closing Date.
 
    6.2.   REPRESENTATIONS  AND WARRANTIES.    All of  the  representations  and
warranties  made by  ICI in  this Agreement  and in  all certificates  and other
documents delivered  by ICI  to MMI  pursuant hereto  shall have  been true  and
correct  in all material respects  as of the date hereof,  and shall be true and
correct in all material  respects at the  Closing Date with  the same force  and
effect  as if such representations and warranties had been made at and as of the
Closing Date, except for changes permitted or contemplated by this Agreement and
except  that   if  information   which  would   constitute  a   breach  of   the
representations and warranties of ICI made in this Agreement is disclosed in the
Proxy   Statement  on  the  date  such   Proxy  Statement  is  mailed  to  MMI's
stockholders, then MMI  shall be  deemed to have  waived this  condition to  the
performance of its obligations hereunder.
 
    6.3.   MATERIAL  ADVERSE CHANGES.   Subsequent  to December  31, 1995, there
shall not have occurred any ICI Material  Adverse Effect except as set forth  in
the ICI Disclosure Schedule.
 
    6.4.   NMS LISTING.   ICI Common  Stock issuable pursuant  to the Merger and
pursuant to the exercise of the Options after the Effective Date shall have been
authorized for listing on the NMS.
 
    6.5.  CERTIFICATES.  MMI shall have received a certificate or  certificates,
executed on behalf of ICI by an executive officer of ICI, to the effect that the
conditions contained in Sections 6.2 and 6.3 hereof have been satisfied.
 
    6.6.   STOCKHOLDER  APPROVAL.  This  Agreement shall have  been approved and
adopted by the  affirmative vote  of the  holders of a  majority of  all of  the
outstanding shares of MMI Common Stock.
 
    6.7.   EFFECTIVENESS OF REGISTRATION  STATEMENT.  The Registration Statement
shall have become effective and  no stop order shall been  issued by the SEC  or
any   other  governmental   authority  suspending   the  effectiveness   of  the
Registration Statement  or  preventing or  suspending  the use  thereof  or  any
related prospectus.
 
    6.8.   CONSENTS; LITIGATION.   Other than  the filing of  the Certificate of
Merger as  described  in Article  1,  all authorizations,  consents,  orders  or
approvals of, or declarations or filings with, or expirations or terminations of
waiting  periods (including the waiting period under the HSR Act) imposed by any
governmental entity,  and  all required  third-party  consents, the  failure  to
obtain  which would have a material adverse  effect on ICI and its subsidiaries,
including the  Surviving Corporation  and its  subsidiaries, taken  as a  whole,
shall  have been filed, occurred  or been obtained. ICI  shall have received all
state securities or Blue Sky permits and other authorizations necessary to issue
ICI Common Stock pursuant to the Merger  and the other terms of this  Agreement.
In addition, no action, suit or proceeding shall have been instituted before any
court  or other governmental entity to  restrain, modify, enjoin or prohibit the
carrying out of the transactions contemplated hereby.
 
                                      A-24
<PAGE>
    6.9.  TAX OPINION.   MMI shall have received  a favorable opinion of  Arnall
Golden  & Gregory  based upon  certain factual  representations of  MMI, ICI and
Merger  Corp.  reasonably  requested  by  such  counsel,  and  containing   such
qualifications  as such counsel reasonably deems appropriate relative to factual
matters not otherwise  verified to  such counsel's satisfaction,  to the  effect
that the Merger will constitute a reorganization for federal income tax purposes
within the meaning of Section 368(a) of the Code and that accordingly:
 
        (a)  No gain or loss will be  recognized by the shareholders of MMI upon
    the conversion of their shares of MMI Common Stock into shares of ICI Common
    Stock pursuant to  the terms of  the Merger  (except to the  extent cash  is
    received in lieu of fractional shares);
 
        (b)  The  tax basis  of the  shares of  ICI Common  Stock received  by a
    shareholder of MMI  on the conversion  of MMI Common  Stock pursuant to  the
    Merger  will be the same as the basis  of the shares of the MMI Common Stock
    converted (less  any  portion of  such  basis allocable  to  any  fractional
    interest in any share of ICI Common Stock); and
 
        (c)  The holding period of the ICI Common Stock into which shares of MMI
    Common Stock are converted will include  the period that such shares of  MMI
    Common  Stock were held by  the holder, provided such  shares were held as a
    capital asset by such holder.
 
                                   ARTICLE 7.
          CONDITIONS PRECEDENT TO OBLIGATIONS OF ICI AND MERGER CORP.
 
    Except as may be waived by ICI and Merger Corp., the obligations of ICI  and
Merger Corp. to consummate the transactions contemplated by this Agreement shall
be  subject to the satisfaction,  on or before the Closing  Date, of each of the
following conditions:
 
    7.1.  COMPLIANCE.  MMI shall have, or shall have caused to be, satisfied  or
complied  with and performed in all  material respects all terms, covenants, and
conditions of this Agreement to be complied with or performed by it on or before
the Closing Date.
 
    7.2.   REPRESENTATIONS  AND WARRANTIES.    All of  the  representations  and
warranties  made by  MMI in  this Agreement  and in  all certificates  and other
documents delivered by MMI pursuant hereto, shall have been true and correct  in
all  material respects as of  the date hereof, and shall  be true and correct in
all material respects at the Closing Date  with the same force and effect as  if
such representations and warranties had been made at and as of the Closing Date,
except  for changes permitted or contemplated  by this Agreement and except that
if information  which  would constitute  a  breach of  the  representations  and
warranties  of MMI made in this Agreement is disclosed in the Proxy Statement on
the date such Proxy Statement is mailed to MMI's stockholders, then ICI shall be
deemed to  have waived  this condition  to the  performance of  its  obligations
hereunder.
 
    7.3.   MATERIAL ADVERSE CHANGES.   Since February 29,  1996, there shall not
have occurred any MMI Material Adverse Effect.
 
    7.4.  CERTIFICATES.  ICI shall have received a certificate or  certificates,
executed on behalf of MMI by an executive officer of MMI, to the effect that the
conditions in Sections 7.2 and 7.3 hereof have been satisfied.
 
    7.5.   DISSENTERS' RIGHTS.  To the  extent appraisal rights are available to
MMI's stockholders  in connection  with the  Merger,  no more  than 10%  of  the
outstanding  shares of MMI Common Stock  shall (a) qualify as Dissenting Shares,
(b) be subject to payment  in lieu of fractional  shares as provided in  Section
2.2 hereof or (c) be treasury shares of MMI.
 
    7.6.   CONSENTS; LITIGATION.   Other than  the filing of  the Certificate of
Merger as  described  in Article  1,  all authorizations,  consents,  orders  or
approvals of, or declarations or filings with, or expirations or terminations of
waiting periods (including the waiting period under the HSR Act) imposed by, any
governmental  entity,  and all  required  third-party consents,  the  failure to
obtain which
 
                                      A-25
<PAGE>
would have a material adverse effect on ICI and its subsidiaries, including  the
Surviving  Corporation and its  subsidiaries, taken as a  whole, shall have been
filed, occurred or been obtained. ICI  shall have received all state  securities
or Blue Sky permits and other authorizations necessary to issue ICI Common Stock
pursuant  to the Merger and  the other terms of  this Agreement. In addition, no
action, suit or proceeding shall have been instituted before any court or  other
governmental  entity to restrain, modify, enjoin or prohibit the carrying out of
the transactions contemplated hereby.
 
    7.7.   COMFORT LETTER.   ICI  shall  have received  from KPMG  Peat  Marwick
L.L.P.,  certified public accountants  for MMI, (a)  "comfort" letters dated the
date of the Proxy  Statement, the effective date  of the Registration  Statement
and  the Closing  Date (or  such other date  reasonably acceptable  to ICI) with
respect to certain financial statements and other financial information included
in the Registration Statement in customary form, (b) the consents referred to in
Section 5.7(a) in respect  of any filing previously  or concurrently being  made
with  the SEC, and (c) a  letter addressed to ICI and  Deloitte & Touche LLP, in
form and  substance reasonably  satisfactory  to ICI,  to  the effect  that  MMI
qualifies  as  an entity  such that  the Merger  will qualify  as a  "pooling of
interests" transaction under generally accepted accounting principles.
 
    7.8.  POOLING LETTERS.   ICI shall  have received a  letter from Deloitte  &
Touche  LLP,  certified  public accountants  for  ICI, dated  the  Closing Date,
addressed to ICI, in form and substance reasonably satisfactory to ICI,  stating
that  the  Merger will  qualify as  a "pooling  of interests"  transaction under
generally accepted accounting principles.
 
    7.9.   STOCKHOLDER  APPROVAL.    ICI shall  have  obtained  any  shareholder
approval  required for  listing ICI Common  Stock on  NMS as a  condition to the
consummation of the transactions set forth in this Agreement.
 
                                   ARTICLE 8.
                         INDEMNIFICATION AND INSURANCE
 
    8.1  INDEMNIFICATION.  In the  event of any claim, action, suit,  proceeding
or  investigation, whether civil, criminal or administrative, including, without
limitation, any such claim, action,  suit, proceeding or investigation in  which
any  of the present or  former officers or directors  (the "Managers") of MMI or
any of the MMI Subsidiaries is, or is  threatened to be, made a party by  reason
of  the  fact that  he or  she served  as a  Manager of  MMI or  any of  the MMI
Subsidiaries, or is  or was  serving at the  request of  MMI or any  of the  MMI
Subsidiaries  as a director, officer, employee  or agent of another corporation,
partnership, joint venture, trust or  other enterprise, whether before or  after
the  Effective Date, MMI shall  indemnify and hold harmless,  and from and after
the Effective Date each of the Surviving Corporation and ICI shall indemnify and
hold harmless, as and to the full extent permitted by applicable law  (including
by  advancing expenses promptly as statements  therefor are received), each such
Manager against  any  losses,  claims,  damages,  liabilities,  costs,  expenses
(including  attorneys' fees), judgments, fines and amounts paid in settlement in
connection with any such claim,  action, suit, proceeding or investigation,  and
in  the  event  of any  such  claim,  action, suit  proceeding  or investigation
(whether arising before or after the Effective  Date), (i) if MMI (prior to  the
Effective  Date) or ICI or the  Surviving Corporation (after the Effective Date)
have not promptly assumed  the defense of such  matter, the Managers may  retain
counsel  satisfactory to  them, and  MMI, or  the Surviving  Corporation and ICI
after the Effective  Date, shall pay  all reasonable fees  and expenses of  such
counsel for the Managers promptly, as statements therefor are received, and (ii)
MMI,  or the Surviving  Corporation and ICI  after the Effective  Date, will use
their respective reasonable  efforts to assist  in the vigorous  defense of  any
such  matter; provided  that neither  MMI nor  the Surviving  Corporation or ICI
shall be liable for any settlement  effected without its prior written  consent;
provided further that the Surviving Corporation and ICI shall have no obligation
under  the foregoing provisions of this Section 8.1 to any Manager when and if a
court  of   competent  jurisdiction   shall  ultimately   determine,  and   such
determination   shall   have   become  final   and   non-appealable,   (x)  that
indemnification of such Manager in the manner contemplated hereby is  prohibited
by  applicable law, or  (y) that MMI  has breached a  representation or warranty
hereunder with respect to the same
 
                                      A-26
<PAGE>
matters for  which indemnification  is being  sought by  such Manager  and  such
Manager  fails to prove that such Manager had no actual knowledge of such breach
at the  Effective  Date; and  provided  further  that such  Manager  shall  have
satisfied  any and all  applicable conditions precedent  to such indemnification
under applicable  law. Upon  the finality  of any  such determination  that  the
Surviving  Corporation or ICI is not liable for any such indemnification claims,
the Manager  will reimburse  ICI and  the Surviving  Corporation for  any  fees,
expenses  and costs incurred  by ICI or the  Surviving Corporation in connection
with the defense of  such claims. Any Manager  wishing to claim  indemnification
under  this  Section  8.1,  upon  learning  of  any  such  claim,  action, suit,
proceeding or investigation, shall  notify MMI and  ICI, thereof (provided  that
the  failure to  give such  notice shall  not affect  any obligations hereunder,
except to the  extent that  the indemnifying  party is  actually and  materially
prejudiced thereby). ICI further covenants not to amend or repeal any provisions
of  the Certificate of Incorporation or Bylaws  of MMI in any manner which would
adversely affect the indemnification or exculpatory provisions contained herein.
The provisions of this Section  8.1 are intended to be  for the benefit of,  and
shall  be  enforceable by,  each  indemnified party  and  his or  her  heirs and
representatives, and shall survive the Closing  for a period expiring six  years
from the Effective Date.
 
    8.2.   DIRECTORS' AND OFFICERS'  INSURANCE.  For a  period of two years from
the Effective Date, the  Surviving Corporation shall  either, in its  discretion
(x)  maintain  in  effect  MMI's  current  directors'  and  officers'  liability
insurance covering those Managers who are currently covered on the date of  this
Agreement  by MMI's directors' and officers'  liability insurance policy (a copy
of which  has been  heretofore delivered  to ICI);  PROVIDED HOWEVER,  that  the
Surviving  Corporation may  substitute for such  MMI policies,  policies with at
least the  same coverage  containing  terms and  conditions  which are  no  less
advantageous to the Managers and provided that said substitution does not result
in any gaps or lapses in coverage with respect to matters occurring prior to the
Effective  Date  or (y)  to the  extent applicable,  cause ICI's  directors' and
officers' liability insurance, if any, then in effect to cover those persons who
are covered on  the date  of this Agreement  by MMI's  directors' and  officers'
liability  insurance  policy  with respect  to  those matters  covered  by MMI's
directors' and officers' liability insurance policy. In no event, however, shall
the Surviving Corporation or  ICI be required  by this Section  8.2 to expend  a
premium for such insurance in an amount equal to double the rate paid by MMI for
the policy period immediately preceding the date of execution of this Agreement.
The  provisions of this Section  8.2 are intended to be  for the benefit of, and
shall be enforceable by, each Manager and his or her heirs and  representatives.
Notwithstanding  the foregoing, ICI shall have  no liability or obligation under
this Section 8.2 to  the extent the  policy referred to in  this Section is  not
reasonably available on the terms set forth in this Section.
 
                                   ARTICLE 9.
                                 MISCELLANEOUS
 
    9.1.   TERMINATION.  In addition to the provisions regarding termination set
forth elsewhere herein, this Agreement and the transactions contemplated  hereby
may be terminated at any time on or before the Closing Date:
 
        (a) by mutual consent of MMI and ICI;
 
        (b)  by ICI if there has been  a material misrepresentation or breach of
    warranty in the representations and warranties of MMI set forth herein or  a
    failure  to perform in  any material respect  a covenant on  the part of MMI
    with respect to its representations,  warranties and covenants set forth  in
    this  Agreement, except for any such misrepresentation, breach or failure to
    perform which was disclosed in the Proxy Statement on the date it is  mailed
    to MMI's stockholders to the extent that ICI has expressly agreed in writing
    to such specific disclosure;
 
        (c)  by MMI if there has been  a material misrepresentation or breach of
    warranty in the representations and warranties of ICI set forth herein or  a
    failure  to perform in  any material respect  a covenant on  the part of ICI
    with respect to its representations,  warranties and covenants set forth  in
    this  Agreement, except for any such misrepresentation, breach or failure to
 
                                      A-27
<PAGE>
    perform which was disclosed in the Proxy Statement on the date it is  mailed
    to MMI's stockholders to the extent that MMI has expressly agreed in writing
    to  such specific disclosure (and, in no event whatsoever shall MMI have any
    right or remedy  in respect of  any breach  or violation by  ICI of  Section
    5.2(c) hereof other than to exercise any termination right of MMI under this
    Section 9.1(c));
 
        (d)  by  either ICI  or  MMI if  the  transactions contemplated  by this
    Agreement have  not been  consummated  by September  30, 1996,  unless  such
    failure  of consummation is due  to the failure of  the terminating party to
    perform or observe the  covenants, agreements, and  conditions hereof to  be
    performed  or observed by it  at or before the  Closing Date (except for any
    breach by ICI of Section 5.2(c) hereof);
 
        (e) by either MMI or ICI if the transactions contemplated hereby violate
    any  nonappealable  final  order,  decree  or  judgment  of  any  court   or
    governmental body or agency having competent jurisdiction;
 
        (f)  by MMI if, in the exercise of  the good faith judgment of its Board
    of Directors as  to its fiduciary  duties to its  stockholders exercised  in
    accordance with the provisions of Section 5.13, such termination is required
    by reason of an Acquisition Proposal;
 
        (g)  by  ICI  if the  MMI  Board  of Directors  withdraws  or materially
    modifies or changes its recommendation to the stockholders of MMI to approve
    this Agreement and the Merger; or
 
        (h) by either  MMI or  ICI if  the Average  Closing Price  is less  than
    $10.00 per share.
 
    9.2.  EXPENSES.
 
        (a) Except as provided in (b) below, if the transactions contemplated by
    this  Agreement are  not consummated,  each party  hereto shall  pay its own
    expenses incurred in  connection with  this Agreement  and the  transactions
    contemplated hereby.
 
        (b)  If, (i)  this Agreement  is terminated  by MMI  pursuant to Section
    9.1(f) hereof, (ii) this Agreement is terminated by ICI pursuant to  Section
    9.1(g)  or  (iii)  on  or  before September  30,  1996,  MMI  enters  into a
    definitive agreement  with  respect  to an  Acquisition  Proposal  with  any
    corporation, partnership, person or other entity or group (other than ICI or
    any   affiliate  of  ICI),  and  such  transaction  (including  any  revised
    transaction based upon the  Acquisition Proposal) is thereafter  consummated
    (whether  before or after September 30, 1996), then MMI shall pay ICI a cash
    fee equal to the  sum of $2.5  Million, which such fee  shall be payable  in
    same  day funds to an  account specified by ICI.  This Section shall survive
    any termination of this Agreement.
 
    9.3.  ENTIRE  AGREEMENT.  This  Agreement, the MMI  CA, the ICI  CA and  the
exhibits hereto contain the complete agreement among the parties with respect to
the  transactions  contemplated hereby  and supersede  all prior  agreements and
understandings among the parties with respect to such transactions. Section  and
other  headings  are  for  reference  purposes only  and  shall  not  affect the
interpretation or construction of  this Agreement. The  parties hereto have  not
made  any  representation or  warranty  except as  expressly  set forth  in this
Agreement or  in any  certificate  or schedule  delivered pursuant  hereto.  The
obligations of any party under any agreement executed pursuant to this Agreement
shall not be affected by this section.
 
    9.4.   NON-SURVIVAL  OF REPRESENTATIONS AND  WARRANTIES AND  COVENANTS.  The
representations and warranties of each party contained herein or in any exhibit,
certificate, document or  instrument delivered pursuant  to this Agreement,  and
the  covenants and agreements of the parties (other than those contained in 2.5,
8.1 and 8.2) shall not survive the Closing.
 
    9.5.   COUNTERPARTS.   This  Agreement  may be  executed  in any  number  of
counterparts,  each of which when  so executed and delivered  shall be deemed an
original, and such counterparts together shall constitute only one original.
 
                                      A-28
<PAGE>
    9.6.  NOTICES.  All notices, demands, requests or other communications  that
may  be or are required to  be given, served, or sent  by any party to any other
party pursuant to  this Agreement shall  be in  writing and shall  be mailed  by
first-class,  registered or  certified mail,  return receipt  requested, postage
prepaid, or transmitted by hand delivery or facsimile transmission, addressed as
follows:
 
        (i) If to ICI:
 
            4320 International Boulevard, N.W.
           Norcross, Georgia 30093
           Attention: Robert L. Taylor, President and Chief Executive Officer
           Facsimile: (770) 381-7581
           with a copy (which shall not constitute notice) to:
 
            Arnall Golden & Gregory
           2800 One Atlantic Center
           1201 W. Peachtree Street
           Atlanta, Georgia 30309
           Attention: Stephen D. Fox
           Facsimile: (404) 873-8529
 
        (ii) If to MMI:
 
             Post Office Box 2487
           Columbus, Mississippi 39704
           Attention: Kimber L. Vought, President and Chief Executive Officer
           Facsimile: (601) 329-9176
           with a copy (which shall not constitute notice) to:
 
             Crouch & Hallett, L.L.P.
           717 North Harwood Street
           Suite 1400
           Dallas, Texas 75201
           Attention: Bruce H. Hallett
           Facsimile: (214) 953-0576
 
Each party may designate by notice in writing a new address to which any notice,
demand, request or  communication may thereafter  be so given,  served or  sent.
Each  notice,  demand, request  or communication  that  is mailed,  delivered or
transmitted in the manner  described above shall  be deemed sufficiently  given,
served,  sent, and received for all purposes at  such time as it is delivered to
the addressee (with the return  receipt, the delivery receipt, the  confirmation
of  facsimile delivery  or the  affidavit of  messenger being  deemed conclusive
evidence of  such delivery)  or  at such  time as  delivery  is refused  by  the
addressee upon presentation.
 
    9.7.  SUCCESSORS; ASSIGNMENTS.  This Agreement and the rights, interests and
obligations  hereunder shall be binding  upon and shall inure  to the benefit of
the parties hereto  and their  respective successors and  assigns. Neither  this
Agreement  nor any  of the rights,  interests or obligations  hereunder shall be
assigned, by operation of law or otherwise, by any of the parties hereto without
the prior written consent of the other.
 
    9.8.  GOVERNING  LAW.   This Agreement shall  be construed  and enforced  in
accordance  with the  laws of the  State of  Delaware (except the  choice of law
rules thereof).
 
    9.9.  AMENDMENT, WAIVER AND OTHER ACTION.   To the extent permitted by  law,
this  Agreement may be amended by a subsequent writing signed by each of ICI and
MMI upon  the approval  of the  Boards  of Directors  of each  of ICI  and  MMI;
provided, however, that the provisions hereof relating to the manner or basis in
which  shares of MMI Common  Stock will be exchanged  for ICI Common Stock shall
not be  amended after  the  stockholder meeting  of MMI  or  ICI to  adopt  this
Agreement without
 
                                      A-29
<PAGE>
the  requisite approval of the  holders of issued and  outstanding shares of MMI
Common Stock or ICI Common Stock, as the case may be, respectively. Prior to  or
at  the Effective Date,  each of ICI and  MMI shall have the  right to waive any
default in the performance of any term of this Agreement by the other, to  waive
or extend the time for the compliance or fulfillment by the other of any and all
of  the other's obligations under this Agreement and  to waive any or all of the
conditions precedent  to  its  obligations  under  this  Agreement,  except  any
condition  which, if not satisfied,  will result in the  violation of any law or
applicable governmental regulation.
 
    9.10.  SEVERABILITY.   If  any provision  of this  Agreement is  held to  be
illegal, invalid, or unenforceable, such provision shall be fully severable, and
this  Agreement shall be construed  and enforced as if  such illegal, invalid or
unenforceable provision  were  never a  part  hereof; the  remaining  provisions
hereof  shall remain in full  force and effect and shall  not be affected by the
illegal, invalid or unenforceable provision or by its severance; and in lieu  of
such   illegal,  invalid  or  unenforceable  provision,  there  shall  be  added
automatically as part of this Agreement, a provision as similar in its terms  to
such  illegal,  invalid or  unenforceable provision  as may  be possible  and be
legal, valid and enforceable.
 
    9.11.  NO THIRD PARTY BENEFICIARIES.  Article 8 is intended for the  benefit
of each "Manager" (as defined in Article 8) and may be enforced by such persons.
Other  than as expressly  set forth in  this Section 9.11,  nothing expressed or
implied in this Agreement is intended, or shall be construed, to confer upon  or
give  any person, firm or corporation other than the parties hereto, any rights,
remedies, obligations or  liabilities under or  by reason of  this Agreement  or
result  in  such  person,  firm  or  corporation  being  deemed  a  third  party
beneficiary of this Agreement.
 
    9.12.  MUTUAL CONTRIBUTION.  The parties to this Agreement and their counsel
have mutually contributed to  its drafting. Consequently,  no provision of  this
Agreement  shall be construed  against any party  on the ground  that such party
drafted the provision or  caused it to  be drafted or  the provision contains  a
covenant of such party.
 
    9.13.    COUNTERPARTS.   This  Agreement  may  be executed  in  one  or more
counterparts, all of which shall be  considered one and the same agreement,  and
shall become effective when one or more counterparts have been signed by each of
the parties hereto and delivered to each of the other parties hereto.
 
    IN  WITNESS WHEREOF, the  parties hereto have executed  this Agreement as of
the day and year first above written.
 
                                          MICROTEK MEDICAL, INC.
                                          By:
 
                                          --------------------------------------
 
                                          ISOLYSER COMPANY, INC.
 
                                          By:
 
                                          --------------------------------------
 
                                          MMI MERGER CORP.
 
                                          By:
 
                                          --------------------------------------
 
                                      A-30
<PAGE>
MORGAN KEEGAN & COMPANY, INC.
MORGAN KEEGAN TOWER
FIFTY FRONT STREET
MEMPHIS, TENNESSEE 38103
901/524-4100 TELEX 69-74324
WATS 800/366-7426
MEMBERS NEW YORK STOCK EXCHANGE, INC.
 
                                                                         ANNEX B
 
June 21, 1996
 
Board of Directors
Isolyser Company, Inc.
4320 International Boulevard
Norcross, GA 30093
 
Gentlemen:
 
    You have requested our opinion as to the fairness, from a financial point of
view,  to  the shareholders  of Isolyser  Company, Inc.  (the "Company")  of the
consideration to  be  paid  by  the Company  in  connection  with  its  proposed
acquisition  of  Microtek  Medical,  Inc.  ("Microtek"  or  the  "Seller")  (the
"Transaction") pursuant to  and in  accordance with  the terms  of that  certain
Agreement  and Plan of Merger  (the "Agreement") proposed to  be entered into by
and among the Company, a wholly owned subsidiary of the Company ("Merger Corp.")
and the Seller. Capitalized  terms used herein and  not otherwise defined  shall
have the meanings ascribed to them in the Agreement.
 
    You  have advised us that,  pursuant to the Agreement,  Merger Corp. will be
merged with and  into the  Seller, and  the Seller  will become  a wholly  owned
subsidiary of the Company. The Agreement provides that, upon consummation of the
Transaction,  each issued  and outstanding share  of the  Seller's Common Stock,
$.01 par value (the "Seller Common Stock"), will be converted into the right  to
receive  such number of shares  of Company Common Stock,  $.001 par value, as is
equal to the  quotient obtained by  dividing $16.50 by  the Determination  Price
(subject  to adjustment  as described in  the Agreement). The  shares of Company
Common Stock issuable to the holders of the issued and outstanding shares of the
Seller Common  Stock pursuant  to the  terms of  the Agreement  are  hereinafter
referred to collectively as the "Transaction Consideration."
 
    Morgan  Keegan & Company, Inc. ("Morgan  Keegan"), as part of its investment
banking business,  is  regularly engaged  in  the valuation  of  businesses  and
securities  in connection  with mergers and  acquisitions, competitive biddings,
secondary distributions of  listed and unlisted  securities, private  placements
and  valuations for  various purposes.  We have  been retained  by the  Board of
Directors of  the Company  for  the purpose  of, and  will  receive a  fee  for,
rendering  this opinion. We  have not advised  any party in  connection with the
Transaction other  than  the  Company  and we  make  no  recommendation  to  the
shareholders of the Company.
 
    In  connection with our opinion, we have (1) reviewed an unexecuted June 17,
1996 draft of the Agreement dated March 15, 1996 as amended (which, for purposes
of our  analysis, we  have assumed  that any  further revisions,  including  the
filling  in of blank spaces and the attachment of final exhibits and appendices,
will not materially alter  the terms and provisions  of such documents and  that
such documents will be executed as finalized); (2) held discussions with various
members  of  management  and  representatives  of  the  Company  and  the Seller
concerning each company's historical and current
 
                                      B-1
<PAGE>
Isolyser Company, Inc.
June 21, 1996
Page 2
 
operations,  financial  condition   and  prospects;   (3)  reviewed   historical
consolidated  financial  and  operating  data  that  was  publicly  available or
furnished to  us by  the Company  and Seller;  (4) reviewed  internal  financial
analyses,  financial  and  operating forecasts,  reports  and  other information
prepared by officers  and representatives  of the  Company and  the Seller;  (5)
reviewed  certain publicly available  information with respect  to certain other
companies that we believe to be comparable to the Seller and the trading markets
for such other  companies' securities; (6)  reviewed certain publicly  available
information  concerning the terms  of certain other  transactions that we deemed
relevant to our inquiry;  (7) conducted such  other financial studies,  analyses
and investigations as we deemed appropriate for the purposes of this opinion.
 
    In  our review and analysis and in  arriving at our opinion, we have assumed
and relied upon the accuracy and completeness of all of the financial and  other
information  provided us or publicly available  and have assumed and relied upon
the representations and warranties  of the Company and  Seller contained in  the
Agreement. We have not been engaged to, and have not independently attempted to,
verify  any of such information. We have also relied upon the managements of the
Company and Seller as to the  reasonableness and achievability of the  financial
and  operating projections and the assumptions and bases therefor provided to us
and, with your  consent, we have  assumed that such  projections, including  and
without  limitation cost savings  and operating synergies  from the Transaction,
reflect the best currently available estimates and judgments of such  respective
managements  of the Company  and Seller and that  such projections and forecasts
will be realized  in the  amounts and time  periods currently  estimated by  the
managements  of the Company and  Seller. We have not  been engaged to assess the
achievability of such projections  or the assumptions on  which they were  based
and  express no view as to such projections or assumptions. In addition, we have
not conducted  a  physical  inspection  or  appraisal  of  any  of  the  assets,
properties  or  facilities of  either the  Company  or Seller  nor have  we been
furnished with any such evaluation or  appraisal. We have also assumed that  the
conditions  to the Transaction as set forth in the Agreement would be satisfied;
and that the Transaction would  be consummated on a  timely basis in the  manner
contemplated  in the Agreement  and that, as contemplated  by the Agreement, the
Merger will be accounted  for as a  pooling of interests.  Our opinion is  based
upon  analyses of the  foregoing factors in  light of our  assessment of general
economic, financial and market conditions as they exist and can be evaluated  by
us as of the date hereof. We express no opinion as to the price or trading range
at  which shares  of the  Company's Common Stock  will trade  following the date
hereof, or upon completion of the Transaction.
 
    Morgan Keegan has provided other investment banking services to the Company,
including  advising  it  with  respect  to  the  acquisition  of  White   Knight
Healthcare,  Inc.  in  1995, acting  as  managing underwriter  of  the Company's
initial public offering  in 1994  and lead manager  of a  follow-on offering  of
Common  Stock of the Company in 1995. In the ordinary course of our business, we
serve as a market maker for the Company's Common Stock and trade shares for  our
own  account and the accounts of our  customers. Accordingly, we may at any time
hold long or short positions in the Company's Common Stock.
 
    It is understood that this  opinion is not to be  quoted or referred to,  in
whole  or  in part  (including excerpts  or summaries),  in any  filing, report,
document, release or other communication used in connection with the Transaction
(unless  required  to  be  quoted  or  referred  to  by  applicable   regulatory
requirements),  nor shall this  opinion be used for  any other purposes, without
our prior written  consent, which  consent shall not  be unreasonably  withheld.
Furthermore,  our opinion  is directed to  the Company's Board  of Directors and
does not constitute a recommendation to any shareholder of the Company.
 
                                      B-2
<PAGE>
Isolyser Company, Inc.
June 21, 1996
Page 3
 
    Based upon and subject to the foregoing and based upon such other matters as
we consider  relevant, it  is  our opinion  that, as  of  the date  hereof,  the
Transaction  Consideration  is fair,  from  a financial  point  of view,  to the
shareholders of the Company.
 
Yours very truly,
 
/s/ MORGAN KEEGAN & COMPANY, INC.
    MORGAN KEEGAN & COMPANY, INC.
 
                                      B-3
<PAGE>
                                 [LOGO]
 
                                                                      APPENDIX C
 
PERSONAL AND CONFIDENTIAL
June 23, 1996
Board of Directors
Microtek Medical, Inc.
512 Lehmberg Road
Columbus, MS 39702
Gentlemen:
 
    You  have requested  our opinion as  to the  fairness to the  holders of the
outstanding shares of Common Stock, par value $.01 per share (the "Shares"),  of
Microtek  Medical, Inc. (the "Company") of the Exchange Ratio (as defined below)
of shares (or fraction thereof) of Common Stock, par value $.001 per share  (the
"Isolyser  Shares"), of Isolyser  Company, Inc. ("Isolyser")  to be received for
each Share pursuant to the  Agreement and Plan of Merger  dated as of March  15,
1996,  as amended as of June 23, 1996, among Isolyser, MMI Merger Corp. ("MMI"),
a wholly-owned  subsidiary  of  Isolyser, and  the  Company  (the  "Agreement").
Pursuant  to the Agreement, MMI  will be merged with  the Company (the "Merger")
and each outstanding Share not held in  the treasury of the Company or owned  by
Isolyser  or any direct  or indirect wholly-owned subsidiary  of Isolyser or the
Company will be  converted into  the right to  recieve that  number of  Isolyser
Shares  equal to  the quotient, computed  to four decimal  places (the "Exchange
Ratio"), of $16.50 divided  by the average per  Isolyser Share closing price  as
reported  on the NASDAQ  National Market System for  the twenty days immediately
preceding the second trading day prior to the Effective Date (as defined in  the
Agreement),  except that in no event will the Exchange Ratio be less than 1.1000
or greater than 1.6500.
 
    Goldman, Sachs  &  Co., as  part  of  its investment  banking  business,  is
continually  engaged  in the  valuation of  businesses  and their  securities in
connection with mergers and acquisitions, negotiated underwritings,  competitive
biddings,  secondary distributions  of listed  and unlisted  securities, private
placements and  valuations for  estate,  corporate and  other purposes.  We  are
familiar with the Company having provided certain investment banking services to
the  Company from time to time, including  having acted as its financial advisor
in connection  with, and  having  participated in  certain of  the  negotiations
leading to, the Agreement.
 
                                      C-1
<PAGE>
    In  connection with this opinion, we  have reviewed, among other things, the
Agreement; Annual Reports to Stockholders and Annual Reports on Form 10-K of the
Company for the four fiscal years ended  November 30, 1995, and of Isolyser  for
the  two years  ended December  31, 1995;  Form S-1  dated October  20, 1994, of
Isolyser; certain interim reports to stockholders and Quarterly Reports on  Form
10-Q  of  the Company  and of  Isolyser; certain  other communications  from the
Company and  Isolyser to  their respective  stockholders; and  certain  internal
financial  analyses and forecasts for the Company and Isolyser prepared by their
respective managements. We also have held discussions with members of the senior
management of  the  Company and  of  Isolyser  regarding the  past  and  current
business   operations,  financial  condition  and   future  prospects  of  their
respective companies.  In addition,  we  have reviewed  the reported  price  and
trading  activity for the  Shares and for the  Isolyser Shares, compared certain
financial and stock  market information for  the Company and  for Isolyser  with
similar  information for  certain other  companies the  securities of  which are
publicly traded,  reviewed  the  financial  terms  of  certain  recent  business
combinations in the medical device and hospital supply industry specifically and
in  other industries generally and performed  such other studies and analyses as
we considered appropriate.
 
    We have  relied  without  independent verification  upon  the  accuracy  and
completeness  of all of the  financial and other information  reviewed by us for
purposes of this opinion.  In that regard, we  have assumed, with your  consent,
that  the financial forecasts  for the Company  and Isolyser, including, without
limitation, projected cost  savings and operating  synergies resulting from  the
Merger  have been reasonably  prepared on a basis  reflecting the best currently
available judgments and estimates of the  Company and of Isolyser and that  such
financial   forecasts  will  be  realized  in  the  amounts  and  at  the  times
contemplated thereby. In addition, we have not made an independent evaluation or
appraisal of the assets  and liabilities of  the Company or  Isolyser or any  of
their  subsidiaries and we have  not been furnished with  any such evaluation or
appraisal. We have  assumed, with  your consent,  that the  consummation of  the
Merger  will be accounted for as a pooling of interests under generally accepted
accounting principles.
 
    Based upon and subject to the foregoing and based upon such other matters as
we consider relevant, it is our opinion that as of the date hereof the  Exchange
Ratio pursuant to the Agreement is fair to the holders of Shares.
 
Very truly yours,
 
              [LOGO]
 
GOLDMAN, SACHS & CO.
 
                                      C-2
<PAGE>
                                                             PRELIMINARY COPY 
                          PROXY SOLICITED FOR
                 SPECIAL MEETING OF SHAREHOLDERS OF
                         ISOLYSER COMPANY, INC.
                 TO BE HELD _________________, 1996

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

     The undersigned hereby appoints Robert L. Taylor, Travis W. Honeycutt 
and C. Fred Harlow, and each of them, with full power of substitution, 
proxies to represent and vote, as indicated below, all of the shares of 
Common Stock of Isolyser Company, Inc. ("Isolyser") that the undersigned 
would be entitled to vote at the Special Meeting of Shareholders to be held 
_______________, 1996, and at any adjournment, upon the matters described in 
the accompanying Notice of Special Meeting of Shareholders and Joint Proxy 
Statement/Prospectus, receipt of which is acknowledged, and upon any other 
business that may properly come before the meeting or any adjournment. Said 
proxies are directed to vote on the matters described in the Notice of 
Special Meeting of Shareholders and Joint Proxy Statement/Prospectus as 
follows, and otherwise in their discretion upon such other business as may 
properly come before the meeting or any adjournment thereof.

     To consider and vote upon a proposal to approve the issuance of up
     to 8,758,720 shares of Isolyser common stock, $.001 par value per
     share, in connection with the merger (the "Merger") of a wholly-
     owned subsidiary of Isolyser with and into Microtek Medical, Inc. 
     ("Microtek") in accordance with that certain Agreement and Plan of
     Merger (the "Merger Agreement") dated as of March 15, 1996 and
     amended as of June 23, 1996, by and among Microtek, Isolyser and MMI
     Merger Corp. (the "Isolyser Subsidiary"). As a result of the Merger,
     Microtek will become a wholly-owned subsidiary of Isolyser, and each
     share of Microtek common stock will be converted into the right to
     receive such number of shares of Isolyser common stock equal to $16.50
     divided by the "Determination Price" (as defined in the Merger Agreement).

     _____________ FOR     _____________ AGAINST     _____________ ABSTAIN

     THIS PROXY WILL BE VOTED AS DIRECTED, BUT IF NO DIRECTION IS INDICATED, 
THE PROXY WILL BE VOTED "FOR" THE ABOVE PROPOSAL.

                             DATED: ____________________________, 1996 

                             ________________________________________________ 

                             ________________________________________________ 
                                  Signature of Shareholder

                             Please sign exactly as your name or names appear 
                             hereon. Where more than one owner is shown, each 
                             should sign. Persons signing in a fiduciary or 
                             representative capacity should give full title. 
                             If this proxy is submitted by a corporation, 
                             please sign in full corporate name by authorized 
                             officer. If a partnership, please sign in 
                             partnership name by authorized person.

PLEASE MARK, SIGN, DATE AND RETURN THIS PROXY CARD PROMPTLY, USING THE 
ENCLOSED ENVELOPE.

<PAGE>
                                                             PRELIMINARY COPY 

                            MICROTEK MEDICAL, INC.

              PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

            FOR USE AT THE SPECIAL MEETING ON ________________, 1996


     The undersigned stockholder hereby appoints Kimber L. Vought and Lester 
J. Berry, or either of them, with full power of substitution, to act as proxy 
for, and to vote the stock of, the undersigned at the special meeting of 
stockholders of MICROTEK MEDICAL, INC. (the "Company") to be held on 
____________, 1996, and any adjournmenhts thereof.

     The undersigned acknowledges receipt of Notice of the Special Meeting 
and Joint Proxy Statement, each dated ________________, 1996, and grants 
authority to said proxies, or their substitutes, and ratifies and confirms 
all that said proxies may lawfully do in the undersigned's name, place and 
stead. The undersigned instructs said proxies to vote as indicated on the 
reverse hereof.

PLEASE VOTE, SIGN, DATE AND RETURN THIS PROXY CARD PROMTPLY USING THE 
ENCLOSED ENVELOPE.

                     (CONTINUED ON THE REVERSE SIDE)

- --------------------------- --FOLD AND DETACH HERE-- ------------------------ 

<PAGE>

1.  Resolution of the stockholders to consider and vote upon a proposal to 
approve that certain Agreement and Plan of Merger, dated March 15, 1996 as 
amended June 23, 1996 ("Merger Agreement"), by and among the Company, 
Isolyser Company, Inc. ("Isolyser") and MMI Merger Corp., pursuant to which 
the Company would become a wholly owned subsidiary of Isolyser, and each 
issued share of common Stock of the Company would be converted into the right 
to receive such number of shares of Common Stock of Isolyser as are equal to 
$16.50 divided by the "Determination Price" (as defined in the Merger 
Agreement).

            FOR                   AGAINST                   ABSTAIN
            / /                     / /                       / /

2.  Resolution of the stockholders to consider and vote upon a proposed 
amendment to the 1990 Incentive Stock Option Plan (the "Option Plan") to 
increase the number of shares of Common Stock of the Company issuable upon 
exercise of stock options under the Option Plan from 883,302 to 1,083,302 
shares of Common Stock.

            FOR                   AGAINST                   ABSTAIN
            / /                     / /                       / /

- --------------------------------------------------
      "PLEASE MARK INSIDE BLUE BOX SO THAT
         DATA PROCESSING EQUIPMENT WILL
                RECORD YOUR VOTES"
- --------------------------------------------------

3.  Upon such other matters as may properly come before the meeting.

THE PROXIES SHALL VOTE AS SPECIFIED ABOVE, OR IF A CHOICE IS NOT SPECIFIED. 
THEY SHALL VOTE "FOR" APPROVAL OF THE MERGER AGREEMENT AND "FOR" THE PROPOSED 
AMENDMENT TO THE OPTION PLAN.

Dated: __________________________, 1996

______________________________________________________________________

______________________________________________________________________
                              (Signature)

(Stockholders should sign exactly as name appears on stock. Where there is 
more than one owner each should sign. Executors, Administrators, Trustees and 
others signing in a representative capacity should do indicate.)

Please enter your Social Security Number or Federal Employer Identification 
Number here:

                      __________________________________


- --------------------------- --FOLD AND DETACH HERE-- ------------------------ 

                                SPECIAL MEETING
                                       OF
                                  STOCKHOLDERS
                                       OF

                              MICROTEK MEDICAL, INC.

                               ______________, 1996
                                       AT
                      THE OFFICES OF MICROTEK MEDICAL, INC.
                                512 LEHMBERG ROAD
                              COLUMBUS, MISSISSIPPI
                                    10:00 A.M.

<PAGE>
                                    PART II
                   INFORMATION NOT REQUIRED IN THE PROSPECTUS
 
ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    Pursuant  to  Section  41-2-851  through 14-2-857  of  the  Georgia Business
Corporation Code, as amended, the  directors, officers, employees and agents  of
the  Registrant may, and  in some cases  must, be indemnified  by the Registrant
under certain  circumstances against  expenses and  liabilities incurred  by  or
imposed  upon them as a result of  actions, suits or proceedings brought against
them as directors, officers, employees  and agents of the Registrant  (including
action,  suits or proceedings brought against them for violations of the federal
securities  laws).  Article  Nine  of  the  Registrant's  Bylaws  provides   for
indemnification  of directors  to the  fullest extent  permitted by  the Georgia
Business Corporation Code.  These provisions generally  mirror Section  41-2-851
through 14-2-857 of the Georgia Business Corporation Code.
 
    Insofar  as indemnification for liabilities arising under the Securities Act
of 1933, as  amended (the  "Act"), may be  permitted to  directors, officers  or
persons  controlling the Registrant pursuant to  the foregoing provisions of the
Georgia Business Corporation  Code and the  Registrant's Bylaws, the  Registrant
has  been  informed that  indemnification is  considered  by the  Securities and
Exchange Commission to be against public policy and therefore unenforceable.
 
ITEM 21.
 
    (a) Exhibits
 
<TABLE>
<C>        <S>
      2.1  Articles of Merger of MedSurg Industries, Inc. and MedSurg Acquisition Corp.
           dated December 31, 1993 (incorporated by reference to Exhibit 2.1 filed with
           the Company's Registration Statement on Form S-1, File No. 33-83474)
      2.2  Plan and Agreement of Merger dated December 31, 1993 of MedSurg  Industries,
           Inc. and MedSurg Acquisition Corp. (incorporated by reference to Exhibit 2.2
           filed  with  the  Company's Registration  Statement  on Form  S-1,  File No.
           33-83474)
      2.3  Certificate of  Merger  and Name  Change  of MedSurg  Industries,  Inc.  and
           MedSurg  Acquisition Corp. dated January  7, 1994 (incorporated by reference
           to Exhibit 2.3 filed with the Company's Registration Statement on Form  S-1,
           File No. 33-84374)
      2.4  Articles of Merger of Creative Research and Manufacturing, Inc. and Creative
           Acquisition  Corp.  dated December  31, 1993  (incorporated by  reference to
           Exhibit 2.4 filed  with the  Company's Registration Statement  on Form  S-1,
           File No. 33-83474)
      2.5  Plan  and Agreement of  Merger dated December 31,  1993 of Creative Research
           and Manufacturing,  Inc. and  Creative  Acquisition Corp.  (incorporated  by
           reference  to Exhibit 2.5 filed with the Company's Registration Statement on
           Form S-1, File No. 33-83474)
      2.6  Certificate  of   Merger  and   Name  Change   of  Creative   Research   and
           Manufacturing,  Inc. and  Creative Acquisition  Corp. dated  January 7, 1994
           (incorporated  by  reference  to  Exhibit  2.6  filed  with  the   Company's
           Registration Statement on Form S-1, File No. 33-83474)
      2.7  Agreement  and Plan of Merger  dated as of July  28, 1995 among the Company,
           White  Knight   Acquisition  Corp.   and  White   Knight  Healthcare,   Inc.
           (incorporated by reference to Exhibit 2.1 to the Company's Current Report on
           Form 8-K filed October 3, 1995)
      2.8  Agreement  and Plan  of Merger dated  as of  May 1, 1995  among the Company,
           Isolyser/   SafeWaste   Acquisition   Corp.   and   SafeWaste    Corporation
           (incorporated by reference to Exhibit 2.1 to the Company's Current Report on
           Form 8-K filed on June 15, 1995)
</TABLE>
 
                                      II-1
<PAGE>
<TABLE>
<C>        <S>
      2.9  Articles of Merger dated May 31, 1995 of SafeWaste Corporation With and Into
           Isolyser/SafeWaste  Acquisition Corp. (incorporated  by reference to Exhibit
           2.2 to the Company's Current Report on Form 8-K filed on June 15, 1995)
     2.10  Certificate of Merger dated May  31, 1995 of Isolyser/SafeWaste  Acquisition
           Corp. and SafeWaste Corporation (incorporated by reference to Exhibit 2.3 to
           the Company's Current Report on Form 8-K filed on June 15, 1995)
     2.11  Articles  of  Merger  of White  Knight  Healthcare, Inc.,  and  White Knight
           Acquisition Corp., dated  September 18, 1995  (incorporated by reference  to
           Exhibit  2.2 to the Company's Current Report on Form 8-K filed on October 3,
           1995)
     2.12  Certificate of Merger  of White  Knight Healthcare, Inc.,  and White  Knight
           Acquisition  Corp., dated September  18, 1995 (incorporated  by reference to
           Exhibit 2.3 to  the Company's Current  Report on Form  8-K filed October  3,
           1995)
     2.13  Stock  Purchase  Agreement  dated  December 31,  1993  between  the Company,
           MedSurg Acquisition Corp., Creative  Acquisition Corp., MedSurg  Industries,
           Inc.,  Creative Research and Manufacturing,  Inc. and MedInvest Enterprises,
           Inc. (incorporated by reference to Exhibit 2.7 to the Company's Registration
           Statement on Form S-1, File No. 33-83474)
     2.14  Agreement and  Plan  of Merger  dated  March  15, 1996  among  the  Company,
           Microtek  Medical, Inc. and  MMI Merger Corp.  (incorporated by reference to
           Appendix A to the Proxy Statement/Prospectus contained in this  Registration
           Statement)
      3.1  Articles  of  Incorporation  of  Isolyser  Company,  Inc.  (incorporated  by
           reference to Exhibit 3.1 filed with the Company's Registration Statement  on
           Form S-1, File No. 33-83474)
      3.2  Amended  and  Restated Bylaws  of  Isolyser Company,  inc.  (incorporated by
           reference to Exhibit 3.2 filed with the Company's Registration Statement  on
           Form S-1, File No. 33-83474)
      4.1  Specimen  Certificate of Common Stock  (incorporated by reference to Exhibit
           4.1 filed with the  Company's Registration Statement on  Form S-1, File  No.
           33-83474)
 5.1*      Opinion of Arnall Golden & Gregory
   8.1*    Opinion of Arnall Golden & Gregory as to certain tax matters
      9.1  Voting  Agreement, dated December 31, 1993, among HTI Investments Ltd. J.V.,
           Robert L. Taylor, Travis W. Honeycutt, Life-Aid Services, Inc. and MedInvest
           Enterprises, Inc. (incorporated by reference  to Exhibit 9.1 filed with  the
           Company's Registration Statement on Form S-1, File No. 33-83474)
     10.1  Employment Agreement dated December 31, 1993 between Michael Sahady, MedSurg
           Industries,  Inc., Creative Research and Manufacturing, Inc. and the Company
           (incorporated  by  reference  to  Exhibit  10.1  filed  with  the  Company's
           Registration Statement on Form S-1, File No. 33-83474)
     10.2  Employment  Agreement  dated  December  31,  1993  between  Kenneth Newsome,
           MedSurg Industries, Inc., Creative Research and Manufacturing, Inc. and  the
           Company  (incorporated by reference to Exhibit 10.2 filed with the Company's
           Registration Statement on Form S-1, File No. 33-83474)
     10.3  Stock Option Plan and First Amendment to Stock Option Plan (incorporated  by
           reference  to Exhibit 4.1 filed with the Company's Registration Statement on
           Form S-8, File No. 33-85668)
     10.4  Second Amendment to Stock Option Plan (incorporated by reference to  Exhibit
           4.1  filed with the  Company's Registration Statement on  Form S-8, File No.
           33-85668)
</TABLE>
 
                                      II-2
<PAGE>
<TABLE>
<C>        <S>
     10.5  Form of Third Amendment to Stock  Option Plan (incorporated by reference  to
           Exhibit  10.37 filed with the  Company's Annual Report on  Form 10-K for the
           period ended December 31, 1994)
     10.6  Form of  Incentive Stock  Option  Agreement pursuant  to Stock  Option  Plan
           (incorporated   by  reference  to  Exhibit  4.2  filed  with  the  Company's
           Registration Statement on Form S-8, File No. 33-85668)
     10.7  Form of Non-Qualified Stock Option  Agreement pursuant to Stock Option  Plan
           (incorporated  by  reference  to  Exhibit  4.3,  filed  with  the  Company's
           Registration Statement on Form S-8, File No. 33-85668)
     10.8  Form of Option  for employees of  the Company outside  of Stock Option  Plan
           (incorporated  by  reference  to  Exhibit  10.6  filed  with  the  Company's
           Registration Statement on Form S-1, File No. 33-83474)
     10.9  Contract for Sterilization Facility, dated October 18, 1993, between Sterile
           Technologies, Inc. and MedSurg  Industries, Inc. (incorporated by  reference
           to  Exhibit 10.14  filed with the  Company's Registration  Statement on Form
           S-1, File No. 33-83474)
     10.10 Distribution Agreement,  dated  August  30, 1993,  between  Curtin  Matheson
           Scientific, Inc. and the Company (incorporated by reference to Exhibit 10.17
           filed  with  the  Company's Registration  Statement  on Form  S-1,  File No.
           33-83474)
     10.11 Exclusive Distribution Agreement,  effective March 1,  1992, between  Baxter
           Healthcare  Corporation,  through its  Pharmaseal  Division and  the Company
           (incorporated by  reference  to  Exhibit  10.18  filed  with  the  Company's
           Registration Statement on Form S-1, File No. 33-83474)
     10.12 Commission  Agreement,  dated  September  10,  1993,  between  Brian Haynes,
           Charles D.  Leddon and  the Company  (incorporated by  reference to  Exhibit
           10.19  filed with the Company's Registration  Statement on Form S-1 File No.
           33-83474)
     10.13 401(k)  Retirement  Plan  of  MedSurg  Industries,  Inc.  (incorporated   by
           reference  to Exhibit 10.13 filed  with the Company's Registration Statement
           on Form S-1 File No. 33-97086)
     10.14 Non-Competition Agreement, dated February  28, 1993, between Charles  Atkins
           and  Company, Ltd.,  Scherer Healthcare, Inc.,  Atlanta Healthcare Services,
           Inc., Charles R. Atkins, III and  the Company (incorporated by reference  to
           Exhibit  10.22 filed with the Company's  Registration Statement on Form S-1,
           File No. 33-83474)
     10.15 Covenant and  Agreement Not  to Compete,  dated December  31, 1993,  between
           MedSurg   Industries,  Inc.,  Creative  Research  and  Manufacturing,  Inc.,
           MedInvest Enterprises, Inc., MedSurg Acquisition Corp., Creative Acquisition
           Corp. and the Company (incorporated by reference to Exhibit 10.23 filed with
           the Company's Registration Statement on Form S-1, File No. 33-83474)
     10.16 Sublicense Agreement, dated March 31, 1987, between Sherwood Medical Company
           and MedSurg Industries,  Inc. (incorporated  by reference  to Exhibit  10.24
           filed  with  the  Company's Registration  Statement  on Form  S-1,  File No.
           33-83474)
     10.17 Lease Agreement, dated July 29, 1993, between Richard E. Curtis, Trustee and
           MedSurg Industries, Inc. (incorporated by  reference to Exhibit 10.25  filed
           with the Company's Registration Statement on Form S-1, File No. 33-83474)
     10.18 First  Lease Amendment, dated February 28,  1994, between Richard E. Curtis,
           Trustee and MedSurg Industries, Inc.  (incorporated by reference to  Exhibit
           10.26  filed with the Company's Registration Statement on Form S-1, File No.
           33-83474)
</TABLE>
 
                                      II-3
<PAGE>
<TABLE>
<C>        <S>
     10.19 Lease Agreement, dated October 21,  1991, between Weeks Master  Partnership,
           L.P.  and the Company (incorporated by reference to Exhibit 10.27 filed with
           the Company's Registration Statement on Form S-1, File No. 33-83474)
     10.20 Lease, dated  September 28,  1984, between  M.S.I. Limited  Partnership  and
           MedSurg  Industries, Inc. (incorporated by  reference to Exhibit 10.28 filed
           with the Company's Registration Statement on Form S-1, File No. 33-83474)
     10.21 Amendment No. 1  to Lease, dated  October 10, 1984,  between M.S.I.  Limited
           Partnership  and  MedSurg  Industries, Inc.  (incorporated  by  reference to
           Exhibit 10.29 filed with the  Company's Registration Statement on Form  S-1,
           File No. 33-83474)
     10.22 Agreement  and Second Amendment  to Lease, dated  December 31, 1993, between
           M.S.I. Limited  Partnership and  MedSurg Industries,  Inc. (incorporated  by
           reference  to Exhibit 10.30 filed  with the Company's Registration Statement
           on Form S-1, File No. 33-83474)
     10.23 Third Amendment to Lease,  dated September 9,  1994, between M.S.I.  Limited
           Partnership  and  Medsurg  Industries, Inc.  (incorporated  by  reference to
           Exhibit 10.31 filed with the  Company's Registration Statement on Form  S-1,
           File No. 33-83474)
     10.24 Lease   Agreement,  dated  October  4,  1990,  between  Minnetonka  Business
           Associates and Creative  Research and Manufacturing,  Inc. (incorporated  by
           reference  to Exhibit 10.35 filed  with the Company's Registration Statement
           on Form S-1, File No. 33-83474)
     10.25 Agreement to  Extend  Lease,  dated  October  7,  1991,  between  Minnetonka
           Business   Associates   and  Creative   Research  and   Manufacturing,  Inc.
           (incorporated by  reference  to  Exhibit  10.36  filed  with  the  Company's
           Registration Statement on Form S-1, File No. 33-83474)
     10.26 Agreement  to Extend Lease, dated June 23, 1993, between Minnetonka Business
           Associates and Creative  Research and Manufacturing,  Inc. (incorporated  by
           reference  to Exhibit 10.37 filed  with the Company's Registration Statement
           on Form S-1, File No. 33-83474)
     10.27 Agreement to Extend Lease dated June 27, 1995, between 7100 Building Company
           Limited  Partnership   and  Creative   Research  and   Manufacturing,   Inc.
           (incorporated  by  reference  to  Exhibit  10.27  filed  with  the Company's
           Registration Statement on Form S-1 File No. 33-97086)
     10.28 Standard Terms and Conditions of Sale, dated December 31, 1993, between  ABB
           Sanitec,  Inc. and the  Company (incorporated by  reference to Exhibit 10.38
           filed with  the  Company's Registration  Statement  on Form  S-1,  File  No.
           33-83474)
     10.29 Private  Label Supply Agreement, dated  September 22, 1993, between National
           Steel &  Copper Plate  Co. and  the Company  (incorporated by  reference  to
           Exhibit  10.39 filed with the Company's  Registration Statement on Form S-1,
           File No. 33-83474)
     10.30 Storz-Atkins Agreement, effective September 1, 1989, between Charles  Atkins
           &  Company Ltd. and Storz Instrument Company,  as assigned to the Company on
           February 28, 1993 (incorporated by reference to Exhibit 10.43 filed with the
           Company's Registration Statement on Form S-1, File No. 33-83474)
</TABLE>
 
                                      II-4
<PAGE>
<TABLE>
<C>        <S>
     10.31 Order Confirmation No.  594NW01 (Two  Complete Thermobonding  Installations)
           dated  May 27, 1994 between the Company and Greenville Machinery Corporation
           and Amendments to  Order Confirmation  No. 594NW01  dated July  7, 1994  and
           September  19, 1994 (incorporated  by reference to  Exhibit 10.44 filed with
           the Company's Registration Statement on Form S-1, File No. 33-83474)
     10.32 Form of Indemnity Agreement entered into between the Company and certain  of
           its officers and directors (incorporated by reference to Exhibit 10.45 filed
           with the Company's Registration Statement on Form S-1, File No. 33-83474)
     10.33 Agreement  for Purchase  and Sale of  Real Property  dated October    , 1994
           between Eaton  Subsidiary Corporation,  Eaton  Corporation and  the  Company
           (incorporated  by  reference  to  Exhibit  10.46  filed  with  the Company's
           Registration Statement on Form S-1 File No. 33-83474)
     10.34 Credit Agreement,  dated November  28, 1994  between Chemical  Bank and  the
           Company  (incorporated by reference to Exhibit 10.1 filed with the Company's
           Quarterly Report on Form 10-Q for the period ended September 30, 1994)
     10.35 First Amendment Agreement, dated February 7, 1995 between Chemical Bank  and
           the  Company  (incorporated by  reference to  Exhibit  10.35 filed  with the
           Company's Registration Statement on Form S-1 File No. 33-97086)
     10.36 Second Amendment Agreement, dated May 31, 1995 between Chemical Bank and the
           Company (incorporated by reference to Exhibit 10.36 filed with the Company's
           Registration Statement on Form S-1 File No. 33-97086)
     10.37 Third Amendment  and  Waiver Agreement,  dated  September 15,  1995  between
           Chemical  Bank and the  Company (incorporated by  reference to Exhibit 10.37
           filed with  the  Company's  Registration  Statement on  Form  S-1  File  No.
           33-97086)
     10.38 Form  of Cross Indemnity Agreement between HTI Investments Ltd. N.V. and the
           Company (incorporated by reference to Exhibit 10.48 filed with the Company's
           Registration Statement on Form S-1, File No. 33-83474)
     10.39 Lease Agreement, dated November 18, 1994, between Weeks Realty, L.P. and the
           Company (incorporated by reference to Exhibit 10.38 filed with the Company's
           Annual Report on Form 10-K for the period ended December 31, 1994)
     10.40 1995 Nonemployee Director  Stock Option Plan  (incorporated by reference  to
           Exhibit  10.39 filed with the  Company's Annual Report on  Form 10-K for the
           period ended December 31, 1994)
     10.41 Agreement and Lease  dated October  1, 1992  between Industrial  Development
           Authority  of the City of Douglas, Arizona and White Knight Healthcare, Inc.
           (incorporated by  reference  to  Exhibit  10.41  filed  with  the  Company's
           Registration Statement on Form S-1 File No. 33-97086)
     10.42 Product  Purchase and Supply Agreement dated  February 8, 1993 between White
           Knight  Healthcare,  Inc.  and  Sterile  Concepts,  Inc.  (incorporated   by
           reference  to Exhibit 10.42 filed  with the Company's Registration Statement
           on Form S-1 File No. 33-97086)
     10.43 Non-Negotiable  Promissory  Note  in   the  original  principal  amount   of
           $2,304,000.00  dated February 8, 1993  between White Knight Healthcare, Inc.
           and Sterile Concepts, Inc. (incorporated by reference to Exhibit 10.43 filed
           with the Company's Registration Statement on Form S-1 File No. 33-97086)
</TABLE>
 
                                      II-5
<PAGE>
<TABLE>
<C>        <S>
     10.44 Non-Negotiable  Promissory  Note  in   the  original  principal  amount   of
           $1,278,500.00  dated February 8, 1993  between White Knight Healthcare, Inc.
           and Sterile Concepts, Inc. (incorporated by reference to Exhibit 10.44 filed
           with the Company's Registration Statement on Form S-1 File No. 33-97086)
     10.45 Non-Negotiable Promissory  Note  and  Security  Agreement  in  the  original
           principal  amount of $213,668.45 dated February 8, 1993 between White Knight
           Healthcare, Inc. and  Sterile Concepts, Inc.  (incorporated by reference  to
           Exhibit  10.45 filed with  the Company's Registration  Statement on Form S-1
           File No. 33-97086)
     10.46 Form of Non-Negotiable Promissory Note  in the original Principal amount  of
           $750,000  dated September  15, 1995  between the  Company and  Ali R. Momtaz
           (incorporated by  reference  to  Exhibit  10.46  filed  with  the  Company's
           Registration Statement on Form S-1 File No. 33-97086)
     10.47 Option  Contract dated  August 22, 1995,  among the  Company and Spartanburg
           County (incorporated by reference to Exhibit 10.47 filed with the  Company's
           Registration Statement on Form S-1 File No. 33-97086)
     10.48 Distribution  and Marketing Agreement  dated September 15,  1995 between the
           Company and Sterile  Concepts, Inc.  (incorporated by  reference to  Exhibit
           10.48  filed with the Company's Registration  Statement on Form S-1 File No.
           33-97086)
     10.49 Agreement, dated  November 1,  1992 between  Struble &  Moffitt Company  and
           United  Food and  Commercial Workers Union  Local 1360,  chartered by United
           Food and Commercial Workers, AFL-CIO  (incorporated by reference to  Exhibit
           10.49  filed with the Company's Registration  Statement on Form S-1 File No.
           33-97086)
     10.50 Agreement, dated March  18, 1995 between  White Knight Hospital  Disposables
           and  United Food and Commercial Workers Local 99R (incorporated by reference
           to Exhibit 10.50 filed with the Company's Registration Statement on Form S-1
           File No. 33-97086)
     10.51 Labor Contract, dated July  22, 1994, between  Union of Industrial,  Related
           and Similar Workers of the Municipality of Agua Prieta, Sonora, C.R.O.M. and
           Industrias  Apson, S.A. de C.V. (incorporated  by reference to Exhibit 10.51
           filed with  the  Company's  Registration  Statement on  Form  S-1  File  No.
           33-97086)
     10.52 Joint  Venture Agreement,  dated March  31, 1995  by and  among the Company,
           Microtek Medical,  Inc.,  and  Synergon  Medical,  L.L.C.  (incorporated  by
           reference  to Exhibit 10.52 filed  with the Company's Registration Statement
           on Form S-1 File No. 33-97086)
     10.53 Lease Agreement dated June 21, 1995 between Caballeros Blanca, S.A. de  C.V.
           and   Constuctora  Immobiliaria  del   Norte  de  Doahuila,   S.A.  de  C.V.
           (incorporated by  reference  to  Exhibit  10.53  filed  with  the  Company's
           Registration Statement on Form S-1 File No. 33-97086)
     10.54 Lease  Agreement,  dated  June 1,  1994,  between White  Transfer  & Storage
           Company, Inc.,  and White  Knight Health  Care, Inc,  as amended  by  Letter
           Agreements,  dated  June  21,  1995 and  August  21,  1995  (incorporated by
           reference to Exhibit 10.54 filed  with the Company's Registration  Statement
           on Form S-1 File No. 33-97086)
</TABLE>
 
                                      II-6
<PAGE>
<TABLE>
<C>        <S>
     10.55 Lease,  dated  August  1, 1987,  between  HARP,  a division  of  M.B. Haynes
           Electric Corporation,  and  Mars/White  Knight,  a  division  of  Work  Wear
           Corporation, Inc., as amended by Addendum No. 1 dated July 6, 1987, Addendum
           No. 2 dated July 6, 1987, Addendum No. 3 dated May 14, 1990, Addendum No. 4,
           dated June 17, 1992, second Addendum No. 4 dated June 28, 1993, Addendum No.
           5 dated May 26, 1994, Addendum No. 6 dated July 11, 1995, and Addendum No. 7
           dated  September 22, 1995 (incorporated by  reference to Exhibit 10.55 filed
           with the Company's Registration Statement on Form S-1 File No. 33-97086)
     10.56 Lease, dated October 1, 1995,  between SafeWaste Corporation and  Highwoods/
           Forsyth  Limited  Partnership (incorporated  by  reference to  Exhibit 10.56
           filed with  the  Company's  Registration  Statement on  Form  S-1  File  No.
           33-97086)
     10.57 1995  Employee Stock Purchase Plan, as amended by First Amendment dated July
           1, 1995 (incorporated by reference to Exhibit 10.57 filed with the Company's
           Registration Statement on Form S-1 File No. 33-97086)
     10.58 Second Amendment  to  1995 Employee  Stock  Purchase Plan  (incorporated  by
           reference  to Exhibit 10.58  filed with the Company's  Annual Report on Form
           10-K for the year ended December 31, 1995)
     10.59 Fourth Amendment to Stock Option Plan (incorporated by reference to  Exhibit
           10.59 filed with the Company's Annual Report on Form 10-K for the year ended
           December 31, 1995)
     11.1  Statement  re: computation of per  share earnings (incorporated by reference
           to Exhibit 11.1 filed with the Company's Annual Report on Form 10-K for  the
           year ended December 31, 1995)
     21.1  Subsidiaries of the Company (incorporated by reference to Exhibit 21.1 filed
           with  the Company's Annual Report  on Form 10-K for  the year ended December
           31, 1995)
     23.1  Consent of Deloitte & Touche LLP
     23.2  Consent KPMG Peat Marwick LLP
     23.3  Consent KPMG Peat Marwick LLP
     23.4  Consent of Ernst & Young LLP
     23.5  Consent of  Arnall Golden  & Gregory  (included in  their opinion  filed  as
           Exhibit 5.1)
     23.6  Consent  of  Arnall Golden  & Gregory  (included in  their opinion  filed as
           Exhibit 8.1)
     23.7  Consent of Morgan Keegan & Company, Inc.
     23.8  Consent of Goldman Sachs & Co., Inc.
     23.9  Consent of Olin J. Harrell, CPA
     23.10 Consent of KPMG Peat Marwick LLP
     23.11 Consent of Wolf & Company, P.C.
</TABLE>
 
- ------------------------
* Previously filed in Amendment No. 1 to Form S-4 Registration Statement.
 
    (b) Financial Statement Schedule:
       Schedule  II  --  Valuation  and  Qualifying  Accounts  (incorporated  by
reference  from the  Company's Annual  Report on  Form 10-K  for the  year ended
       December 31, 1995)
 
        Other schedules are omitted because  they are not applicable or  because
       required information is included in the consolidated financial statements
       or notes thereto.
 
    (c)  The Fairness Opinions of Goldman Sachs  & Co., Inc. and Morgan Keegan &
Company, Inc. are attached as Annexes C  and B, respectively to the Joint  Proxy
Statement/Prospectus contained in this Registration Statement.
 
                                      II-7
<PAGE>
ITEM 22.  UNDERTAKINGS.
 
    The   undersigned  Registrant  hereby  undertakes   that,  for  purposes  of
determining any liability under the Securities  Act of 1933, each filing of  the
Registrant's  annual report  pursuant to Section  13(a) or Section  15(d) of the
Securities Exchange  Act of  1934 (and,  where applicable,  each filing  of  any
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities Exchange  Act of  1934)  that is  incorporated  by reference  in  the
Registration  Statement  shall  be deemed  to  be a  new  registration statement
relating to the securities offered therein, and the offering of such  securities
at that time shall be deemed to be the initial bona fide offering thereof.
 
    Insofar  as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to  directors, officers and controlling persons of  the
Registrant  pursuant to the  foregoing provisions, or  otherwise, the Registrant
has been advised that in the  opinion of the Securities and Exchange  Commission
such indemnification is against public policy as expressed in the Securities Act
of  1933  and  is, therefore,  unenforceable.  In  the event  that  a  claim for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant  of expenses incurred  or paid by a  director, officer or controlling
person of  the Registrant  in the  successful  defense of  any action,  suit  or
proceeding)  is  asserted by  such director,  officer  or controlling  person in
connection with the securities being registered, the Registrant will, unless  in
the  opinion,  of  its  counsel  the  matter  has  been  settled  by controlling
precedent, submit to a  court of appropriate  jurisdiction the question  whether
such  indemnification  by  it  is  against public  policy  as  expressed  in the
Securities Act of 1933 and  will be governed by  the final adjudication of  such
issue.
 
    The  undersigned  Registrant hereby  undertakes to  respond to  requests for
information that is incorporated  by reference into  the prospectus pursuant  to
Items  4, 10(b), 11, or  13 of this Registration  Statement, within one business
day of receipt of such request, and to send the incorporated documents by  first
class mail or other equally prompt means. This includes information contained in
documents  filed subsequent to the effective  date of the Registration Statement
through the date of responding to the request.
 
    The undersigned  Registrant  hereby  undertakes  to supply  by  means  of  a
post-effective  amendment  all  information concerning  a  transaction,  and the
company being  acquired  involved therein,  that  was  not the  subject  of  and
included in the Registration Statement when it became effective.
 
                                      II-8
<PAGE>
                                   SIGNATURES
 
    Pursuant  to the requirements of the  Securities Act of 1933, the Registrant
has duly caused this registration  statement to be signed  on its behalf by  the
undersigned, in the City of Atlanta, State of Georgia, on July 2, 1996.
 
                                ISOLYSER COMPANY, INC
 
                                By:              /s/ ROBERT L. TAYLOR
                                      -----------------------------------------
                                                   Robert L. Taylor
                                        PRESIDENT AND CHIEF EXECUTIVE OFFICER
 
                               POWER OF ATTORNEY
 
    KNOW  ALL MEN  BY THESE  PRESENTS that  each person  whose signature appears
below constitutes and appoints Robert L. Taylor and C. Fred Harlow, and each  of
them,  as his true and  lawful attorneys-in-fact and agents,  with full power of
substitution and resubstitution, for  him and in his  name, place and stead,  in
any and all capacities, to sign any and all amendments (including post-effective
amendments)  to this Registration Statement,  any related registration statement
filed pursuant to Rule 462 promulgated  pursuant to the Securities Act of  1933,
and  to  file  the  same  with all  exhibits  thereto,  and  other  documents in
connection therewith, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform each and every act  and thing requisite and necessary to be  done
in  and about the premises, as fully to  all intents and purposes as he might or
could  do   in  person,   hereby  ratifying   and  confirming   all  that   said
attorneys-in-fact  and agents, or either of them,  or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.
 
    Pursuant  to  the  requirements  of   the  Securities  Act  of  1933,   this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities indicated on July 2, 1996.
 
<TABLE>
<CAPTION>
               SIGNATURE                                  TITLE
- ----------------------------------------  --------------------------------------
<C>                                       <S>
                   /s/ ROBERT L.          President, Chief Executive Officer and
                 TAYLOR                    Chairman of the Board of Directors
- ----------------------------------------   (principal executive officer)
            Robert L. Taylor
 
                  /s/ TRAVIS W.
               HONEYCUTT                  Executive Vice President, Secretary
- ----------------------------------------   and Director
          Travis W. Honeycutt
 
                     /s/ C. FRED          Senior Vice President of Finance,
                 HARLOW                    Chief Financial Officer, Treasurer
- ----------------------------------------   and Director (principal financial and
             C. Fred Harlow                accounting officer)
 
                     /s/ ROSDON
                HENDRIX                   Director
- ----------------------------------------
             Rosdon Hendrix
 
- ----------------------------------------  Director
              Jamal Silim
 
- ----------------------------------------  Director
            Kenneth F. Davis
</TABLE>
 
                                      II-9
<PAGE>
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                        PAGE
- -----------                                                                                                    ---------
<C>          <S>                                                                                               <C>
       2.1   Articles  of Merger of MedSurg Industries, Inc. and MedSurg Acquisition Corp. dated December 31,
             1993 (incorporated by reference to Exhibit  2.1 filed with the Company's Registration  Statement
             on Form S-1, File No. 33-83474)
       2.2   Plan  and Agreement of  Merger dated December 31,  1993 of MedSurg  Industries, Inc. and MedSurg
             Acquisition  Corp.  (incorporated  by  reference  to  Exhibit  2.2  filed  with  the   Company's
             Registration Statement on Form S-1, File No. 33-83474)
       2.3   Certificate  of Merger and Name Change of MedSurg Industries, Inc. and MedSurg Acquisition Corp.
             dated January  7, 1994  (incorporated  by reference  to Exhibit  2.3  filed with  the  Company's
             Registration Statement on Form S-1, File No. 33-84374)
       2.4   Articles  of Merger of Creative Research and  Manufacturing, Inc. and Creative Acquisition Corp.
             dated December 31,  1993 (incorporated  by reference  to Exhibit  2.4 filed  with the  Company's
             Registration Statement on Form S-1, File No. 33-83474)
       2.5   Plan  and Agreement of  Merger dated December  31, 1993 of  Creative Research and Manufacturing,
             Inc. and Creative Acquisition  Corp. (incorporated by  reference to Exhibit  2.5 filed with  the
             Company's Registration Statement on Form S-1, File No. 33-83474)
       2.6   Certificate  of Merger and Name Change of Creative Research and Manufacturing, Inc. and Creative
             Acquisition Corp. dated January 7, 1994 (incorporated by reference to Exhibit 2.6 filed with the
             Company's Registration Statement on Form S-1, File No. 33-83474)
       2.7   Agreement and  Plan  of Merger  dated  as of  July  28, 1995  among  the Company,  White  Knight
             Acquisition Corp. and White Knight Healthcare, Inc. (incorporated by reference to Exhibit 2.1 to
             the Company's Current Report on Form 8-K filed October 3, 1995)
       2.8   Agreement  and Plan of  Merger dated as  of May 1,  1995 among the  Company, Isolyser/ SafeWaste
             Acquisition Corp. and  SafeWaste Corporation (incorporated  by reference to  Exhibit 2.1 to  the
             Company's Current Report on Form 8-K filed on June 15, 1995)
       2.9   Articles  of Merger dated May 31, 1995 of SafeWaste Corporation With and Into Isolyser/SafeWaste
             Acquisition Corp. (incorporated by reference to Exhibit  2.2 to the Company's Current Report  on
             Form 8-K filed on June 15, 1995)
       2.10  Certificate  of Merger dated May 31, 1995  of Isolyser/SafeWaste Acquisition Corp. and SafeWaste
             Corporation (incorporated by reference to  Exhibit 2.3 to the  Company's Current Report on  Form
             8-K filed on June 15, 1995)
       2.11  Articles  of Merger of White Knight Healthcare,  Inc., and White Knight Acquisition Corp., dated
             September 18, 1995 (incorporated by reference to Exhibit 2.2 to the Company's Current Report  on
             Form 8-K filed on October 3, 1995)
       2.12  Certificate  of Merger  of White  Knight Healthcare, Inc.,  and White  Knight Acquisition Corp.,
             dated September 18,  1995 (incorporated by  reference to  Exhibit 2.3 to  the Company's  Current
             Report on Form 8-K filed October 3, 1995)
       2.13  Stock Purchase Agreement dated December 31, 1993 between the Company, MedSurg Acquisition Corp.,
             Creative  Acquisition Corp., MedSurg Industries, Inc., Creative Research and Manufacturing, Inc.
             and MedInvest  Enterprises, Inc.  (incorporated by  reference to  Exhibit 2.7  to the  Company's
             Registration Statement on Form S-1, File No. 33-83474)
       2.14  Agreement  and Plan of Merger dated March 15, 1996 among the Company, Microtek Medical, Inc. and
             MMI Merger Corp.  (incorporated by  reference to Appendix  A to  the Proxy  Statement/Prospectus
             contained in this Registration Statement)
       3.1   Articles  of Incorporation of Isolyser  Company, Inc. (incorporated by  reference to Exhibit 3.1
             filed with the Company's Registration Statement on Form S-1, File No. 33-83474)
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                        PAGE
- -----------                                                                                                    ---------
<C>          <S>                                                                                               <C>
       3.2   Amended and Restated Bylaws of Isolyser Company, inc. (incorporated by reference to Exhibit  3.2
             filed with the Company's Registration Statement on Form S-1, File No. 33-83474)
       4.1   Specimen  Certificate of Common Stock  (incorporated by reference to  Exhibit 4.1 filed with the
             Company's Registration Statement on Form S-1, File No. 33-83474)
       5.1*  Opinion of Arnall Golden & Gregory
       8.1*  Opinion of Arnall Golden & Gregory as to certain tax matters
       9.1   Voting Agreement, dated December 31,  1993, among HTI Investments  Ltd. J.V., Robert L.  Taylor,
             Travis  W. Honeycutt, Life-Aid  Services, Inc. and MedInvest  Enterprises, Inc. (incorporated by
             reference to Exhibit 9.1 filed with the  Company's Registration Statement on Form S-1, File  No.
             33-83474)
      10.1   Employment  Agreement dated December 31, 1993  between Michael Sahady, MedSurg Industries, Inc.,
             Creative Research and Manufacturing, Inc. and the Company (incorporated by reference to  Exhibit
             10.1 filed with the Company's Registration Statement on Form S-1, File No. 33-83474)
      10.2   Employment  Agreement dated December 31, 1993 between Kenneth Newsome, MedSurg Industries, Inc.,
             Creative Research and Manufacturing, Inc. and the Company (incorporated by reference to  Exhibit
             10.2 filed with the Company's Registration Statement on Form S-1, File No. 33-83474)
      10.3   Stock Option Plan and First Amendment to Stock Option Plan (incorporated by reference to Exhibit
             4.1 filed with the Company's Registration Statement on Form S-8, File No. 33-85668)
      10.4   Second  Amendment to Stock Option Plan (incorporated by  reference to Exhibit 4.1 filed with the
             Company's Registration Statement on Form S-8, File No. 33-85668)
      10.5   Form of Third Amendment to Stock Option  Plan (incorporated by reference to Exhibit 10.37  filed
             with the Company's Annual Report on Form 10-K for the period ended December 31, 1994)
      10.6   Form  of  Incentive  Stock Option  Agreement  pursuant  to Stock  Option  Plan  (incorporated by
             reference to Exhibit 4.2 filed with the  Company's Registration Statement on Form S-8, File  No.
             33-85668)
      10.7   Form  of Non-Qualified  Stock Option  Agreement pursuant to  Stock Option  Plan (incorporated by
             reference to Exhibit 4.3, filed with the Company's Registration Statement on Form S-8, File  No.
             33-85668)
      10.8   Form  of Option  for employees  of the  Company outside  of Stock  Option Plan  (incorporated by
             reference to Exhibit 10.6 filed with the Company's Registration Statement on Form S-1, File  No.
             33-83474)
      10.9   Contract  for Sterilization Facility, dated October 18, 1993, between Sterile Technologies, Inc.
             and MedSurg  Industries,  Inc.  (incorporated by  reference  to  Exhibit 10.14  filed  with  the
             Company's Registration Statement on Form S-1, File No. 33-83474)
      10.10  Distribution  Agreement, dated August 30, 1993, between Curtin Matheson Scientific, Inc. and the
             Company (incorporated  by reference  to  Exhibit 10.17  filed  with the  Company's  Registration
             Statement on Form S-1, File No. 33-83474)
      10.11  Exclusive   Distribution  Agreement,  effective   March  1,  1992,   between  Baxter  Healthcare
             Corporation, through  its Pharmaseal  Division and  the Company  (incorporated by  reference  to
             Exhibit 10.18 filed with the Company's Registration Statement on Form S-1, File No. 33-83474)
      10.12  Commission  Agreement, dated September 10, 1993, between Brian Haynes, Charles D. Leddon and the
             Company (incorporated  by reference  to  Exhibit 10.19  filed  with the  Company's  Registration
             Statement on Form S-1 File No. 33-83474)
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                        PAGE
- -----------                                                                                                    ---------
<C>          <S>                                                                                               <C>
      10.13  401(k)  Retirement Plan of MedSurg Industries, Inc.  (incorporated by reference to Exhibit 10.13
             filed with the Company's Registration Statement on Form S-1 File No. 33-97086)
      10.14  Non-Competition Agreement, dated February  28, 1993, between Charles  Atkins and Company,  Ltd.,
             Scherer  Healthcare, Inc.,  Atlanta Healthcare  Services, Inc., Charles  R. Atkins,  III and the
             Company (incorporated  by reference  to  Exhibit 10.22  filed  with the  Company's  Registration
             Statement on Form S-1, File No. 33-83474)
      10.15  Covenant  and Agreement  Not to  Compete, dated December  31, 1993,  between MedSurg Industries,
             Inc.,  Creative  Research  and  Manufacturing,   Inc.,  MedInvest  Enterprises,  Inc.,   MedSurg
             Acquisition  Corp., Creative  Acquisition Corp.  and the  Company (incorporated  by reference to
             Exhibit 10.23 filed with the Company's Registration Statement on Form S-1, File No. 33-83474)
      10.16  Sublicense Agreement,  dated  March 31,  1987,  between  Sherwood Medical  Company  and  MedSurg
             Industries,  Inc.  (incorporated  by  reference  to  Exhibit  10.24  filed  with  the  Company's
             Registration Statement on Form S-1, File No. 33-83474)
      10.17  Lease Agreement, dated July 29, 1993, between Richard E. Curtis, Trustee and MedSurg Industries,
             Inc. (incorporated by reference to Exhibit 10.25 filed with the Company's Registration Statement
             on Form S-1, File No. 33-83474)
      10.18  First Lease Amendment, dated February 28, 1994,  between Richard E. Curtis, Trustee and  MedSurg
             Industries,  Inc.  (incorporated  by  reference  to  Exhibit  10.26  filed  with  the  Company's
             Registration Statement on Form S-1, File No. 33-83474)
      10.19  Lease Agreement, dated October 21, 1991, between Weeks Master Partnership, L.P. and the  Company
             (incorporated  by reference to Exhibit 10.27 filed  with the Company's Registration Statement on
             Form S-1, File No. 33-83474)
      10.20  Lease, dated September 28, 1984, between M.S.I. Limited Partnership and MedSurg Industries, Inc.
             (incorporated by reference to Exhibit 10.28  filed with the Company's Registration Statement  on
             Form S-1, File No. 33-83474)
      10.21  Amendment No. 1 to Lease, dated October 10, 1984, between M.S.I. Limited Partnership and MedSurg
             Industries,  Inc.  (incorporated  by  reference  to  Exhibit  10.29  filed  with  the  Company's
             Registration Statement on Form S-1, File No. 33-83474)
      10.22  Agreement and  Second  Amendment to  Lease,  dated December  31,  1993, between  M.S.I.  Limited
             Partnership  and MedSurg Industries, Inc. (incorporated by reference to Exhibit 10.30 filed with
             the Company's Registration Statement on Form S-1, File No. 33-83474)
      10.23  Third Amendment  to Lease,  dated September  9,  1994, between  M.S.I. Limited  Partnership  and
             Medsurg  Industries, Inc. (incorporated by  reference to Exhibit 10.31  filed with the Company's
             Registration Statement on Form S-1, File No. 33-83474)
      10.24  Lease Agreement, dated  October 4,  1990, between  Minnetonka Business  Associates and  Creative
             Research  and Manufacturing,  Inc. (incorporated  by reference to  Exhibit 10.35  filed with the
             Company's Registration Statement on Form S-1, File No. 33-83474)
      10.25  Agreement to Extend  Lease, dated October  7, 1991, between  Minnetonka Business Associates  and
             Creative Research and Manufacturing, Inc. (incorporated by reference to Exhibit 10.36 filed with
             the Company's Registration Statement on Form S-1, File No. 33-83474)
      10.26  Agreement  to Extend  Lease, dated  June 23,  1993, between  Minnetonka Business  Associates and
             Creative Research and Manufacturing, Inc. (incorporated by reference to Exhibit 10.37 filed with
             the Company's Registration Statement on Form S-1, File No. 33-83474)
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                        PAGE
- -----------                                                                                                    ---------
<C>          <S>                                                                                               <C>
      10.27  Agreement to Extend Lease dated June 27, 1995, between 7100 Building Company Limited Partnership
             and Creative Research and Manufacturing, Inc. (incorporated by reference to Exhibit 10.27  filed
             with the Company's Registration Statement on Form S-1 File No. 33-97086)
      10.28  Standard  Terms and Conditions of  Sale, dated December 31, 1993,  between ABB Sanitec, Inc. and
             the Company (incorporated by  reference to Exhibit 10.38  filed with the Company's  Registration
             Statement on Form S-1, File No. 33-83474)
      10.29  Private  Label Supply Agreement, dated September 22, 1993, between National Steel & Copper Plate
             Co. and  the Company  (incorporated  by reference  to Exhibit  10.39  filed with  the  Company's
             Registration Statement on Form S-1, File No. 33-83474)
      10.30  Storz-Atkins  Agreement, effective September 1, 1989, between  Charles Atkins & Company Ltd. and
             Storz Instrument Company,  as assigned  to the  Company on  February 28,  1993 (incorporated  by
             reference to Exhibit 10.43 filed with the Company's Registration Statement on Form S-1, File No.
             33-83474)
      10.31  Order  Confirmation No.  594NW01 (Two Complete  Thermobonding Installations) dated  May 27, 1994
             between the Company and  Greenville Machinery Corporation and  Amendments to Order  Confirmation
             No.  594NW01 dated  July 7, 1994  and September 19,  1994 (incorporated by  reference to Exhibit
             10.44 filed with the Company's Registration Statement on Form S-1, File No. 33-83474)
      10.32  Form of Indemnity Agreement  entered into between  the Company and certain  of its officers  and
             directors  (incorporated by  reference to  Exhibit 10.45  filed with  the Company's Registration
             Statement on Form S-1, File No. 33-83474)
      10.33  Agreement for Purchase and Sale of Real Property dated October   , 1994 between Eaton Subsidiary
             Corporation, Eaton Corporation and the Company (incorporated by reference to Exhibit 10.46 filed
             with the Company's Registration Statement on Form S-1 File No. 33-83474)
      10.34  Credit Agreement, dated November 28, 1994 between Chemical Bank and the Company (incorporated by
             reference to Exhibit 10.1 filed with the Company's Quarterly Report on Form 10-Q for the  period
             ended September 30, 1994)
      10.35  First  Amendment  Agreement,  dated February  7,  1995  between Chemical  Bank  and  the Company
             (incorporated by reference to Exhibit 10.35  filed with the Company's Registration Statement  on
             Form S-1 File No. 33-97086)
      10.36  Second  Amendment  Agreement,  dated  May  31,  1995  between  Chemical  Bank  and  the  Company
             (incorporated by reference to Exhibit 10.36  filed with the Company's Registration Statement  on
             Form S-1 File No. 33-97086)
      10.37  Third  Amendment and Waiver  Agreement, dated September  15, 1995 between  Chemical Bank and the
             Company (incorporated  by reference  to  Exhibit 10.37  filed  with the  Company's  Registration
             Statement on Form S-1 File No. 33-97086)
      10.38  Form   of  Cross  Indemnity  Agreement  between  HTI  Investments  Ltd.  N.V.  and  the  Company
             (incorporated by reference to Exhibit 10.48  filed with the Company's Registration Statement  on
             Form S-1, File No. 33-83474)
      10.39  Lease  Agreement,  dated  November  18,  1994,  between  Weeks  Realty,  L.P.  and  the  Company
             (incorporated by reference to Exhibit 10.38 filed with the Company's Annual Report on Form  10-K
             for the period ended December 31, 1994)
      10.40  1995  Nonemployee Director Stock Option  Plan (incorporated by reference  to Exhibit 10.39 filed
             with the Company's Annual Report on Form 10-K for the period ended December 31, 1994)
      10.41  Agreement and Lease dated October 1, 1992  between Industrial Development Authority of the  City
             of  Douglas, Arizona  and White  Knight Healthcare, Inc.  (incorporated by  reference to Exhibit
             10.41 filed with the Company's Registration Statement on Form S-1 File No. 33-97086)
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                        PAGE
- -----------                                                                                                    ---------
<C>          <S>                                                                                               <C>
      10.42  Product Purchase and Supply  Agreement dated February 8,  1993 between White Knight  Healthcare,
             Inc.  and Sterile  Concepts, Inc.  (incorporated by  reference to  Exhibit 10.42  filed with the
             Company's Registration Statement on Form S-1 File No. 33-97086)
      10.43  Non-Negotiable Promissory Note in the original principal amount of $2,304,000.00 dated  February
             8,  1993  between White  Knight Healthcare,  Inc.  and Sterile  Concepts, Inc.  (incorporated by
             reference to Exhibit 10.43 filed with the Company's Registration Statement on Form S-1 File  No.
             33-97086)
      10.44  Non-Negotiable  Promissory Note in the original principal amount of $1,278,500.00 dated February
             8, 1993  between White  Knight Healthcare,  Inc.  and Sterile  Concepts, Inc.  (incorporated  by
             reference  to Exhibit 10.44 filed with the Company's Registration Statement on Form S-1 File No.
             33-97086)
      10.45  Non-Negotiable Promissory  Note and  Security  Agreement in  the  original principal  amount  of
             $213,668.45  dated February 8, 1993 between White  Knight Healthcare, Inc. and Sterile Concepts,
             Inc. (incorporated by reference to Exhibit 10.45 filed with the Company's Registration Statement
             on Form S-1 File No. 33-97086)
      10.46  Form of  Non-Negotiable Promissory  Note in  the  original Principal  amount of  $750,000  dated
             September  15, 1995 between the Company and Ali  R. Momtaz (incorporated by reference to Exhibit
             10.46 filed with the Company's Registration Statement on Form S-1 File No. 33-97086)
      10.47  Option Contract dated August 22, 1995, among the Company and Spartanburg County (incorporated by
             reference to Exhibit 10.47 filed with the Company's Registration Statement on Form S-1 File  No.
             33-97086)
      10.48  Distribution  and Marketing Agreement dated  September 15, 1995 between  the Company and Sterile
             Concepts, Inc. (incorporated by reference to Exhibit 10.48 filed with the Company's Registration
             Statement on Form S-1 File No. 33-97086)
      10.49  Agreement, dated  November  1, 1992  between  Struble &  Moffitt  Company and  United  Food  and
             Commercial  Workers Union Local 1360,  chartered by United Food  and Commercial Workers, AFL-CIO
             (incorporated by reference to Exhibit 10.49  filed with the Company's Registration Statement  on
             Form S-1 File No. 33-97086)
      10.50  Agreement,  dated March 18, 1995  between White Knight Hospital  Disposables and United Food and
             Commercial Workers  Local  99R  (incorporated by  reference  to  Exhibit 10.50  filed  with  the
             Company's Registration Statement on Form S-1 File No. 33-97086)
      10.51  Labor Contract, dated July 22, 1994, between Union of Industrial, Related and Similar Workers of
             the  Municipality  of  Agua  Prieta,  Sonora,  C.R.O.M.  and  Industrias  Apson,  S.A.  de  C.V.
             (incorporated by reference to Exhibit 10.51  filed with the Company's Registration Statement  on
             Form S-1 File No. 33-97086)
      10.52  Joint  Venture Agreement, dated March 31, 1995 by and among the Company, Microtek Medical, Inc.,
             and Synergon  Medical,  L.L.C.  (incorporated by  reference  to  Exhibit 10.52  filed  with  the
             Company's Registration Statement on Form S-1 File No. 33-97086)
      10.53  Lease  Agreement dated  June 21, 1995  between Caballeros  Blanca, S.A. de  C.V. and Constuctora
             Immobiliaria del Norte de  Doahuila, S.A. de  C.V. (incorporated by  reference to Exhibit  10.53
             filed with the Company's Registration Statement on Form S-1 File No. 33-97086)
      10.54  Lease  Agreement, dated June 1, 1994, between White  Transfer & Storage Company, Inc., and White
             Knight Health Care, Inc,  as amended by Letter  Agreements, dated June 21,  1995 and August  21,
             1995 (incorporated by reference to Exhibit 10.54 filed with the Company's Registration Statement
             on Form S-1 File No. 33-97086)
</TABLE>
 
<PAGE>
 
<TABLE>
<CAPTION>
 EXHIBITS                                                                                                        PAGE
- -----------                                                                                                    ---------
<C>          <S>                                                                                               <C>
      10.55  Lease,  dated August 1, 1987, between HARP, a  division of M.B. Haynes Electric Corporation, and
             Mars/White Knight, a division of Work Wear Corporation, Inc., as amended by Addendum No. 1 dated
             July 6, 1987, Addendum No. 2 dated July 6, 1987, Addendum No. 3 dated May 14, 1990, Addendum No.
             4, dated June 17, 1992, second Addendum No. 4 dated June 28, 1993, Addendum No. 5 dated May  26,
             1994,  Addendum  No.  6 dated  July  11,  1995, and  Addendum  No.  7 dated  September  22, 1995
             (incorporated by reference to Exhibit 10.55  filed with the Company's Registration Statement  on
             Form S-1 File No. 33-97086)
      10.56  Lease,  dated  October 1,  1995, between  SafeWaste Corporation  and Highwoods/  Forsyth Limited
             Partnership (incorporated by reference  to Exhibit 10.56 filed  with the Company's  Registration
             Statement on Form S-1 File No. 33-97086)
      10.57  1995  Employee  Stock  Purchase  Plan,  as  amended  by  First  Amendment  dated  July  1,  1995
             (incorporated by reference to Exhibit 10.57  filed with the Company's Registration Statement  on
             Form S-1 File No. 33-97086)
      10.58  Second  Amendment to  1995 Employee  Stock Purchase Plan  (incorporated by  reference to Exhibit
             10.58 filed with the Company's Annual Report on Form 10-K for the year ended December 31, 1995)
      10.59  Fourth Amendment to Stock Option Plan (incorporated by reference to Exhibit 10.59 filed with the
             Company's Annual Report on Form 10-K for the year ended December 31, 1995)
      11.1   Statement re: computation of per share earnings (incorporated by reference to Exhibit 11.1 filed
             with the Company's Annual Report on Form 10-K for the year ended December 31, 1995)
      21.1   Subsidiaries of the Company (incorporated by reference to Exhibit 21.1 filed with the  Company's
             Annual Report on Form 10-K for the year ended December 31, 1995)
      23.1   Consent of Deloitte & Touche LLP
      23.2   Consent KPMG Peat Marwick LLP
      23.3   Consent KPMG Peat Marwick LLP
      23.4   Consent of Ernst & Young LLP
      23.5   Consent of Arnall Golden & Gregory (included in their opinion filed as Exhibit 5.1)
      23.6   Consent of Arnall Golden & Gregory (included in their opinion filed as Exhibit 8.1)
      23.7   Consent of Morgan Keegan & Company, Inc.
      23.8   Consent of Goldman Sachs & Co., Inc.
      23.9   Consent of Olin J. Harrell, CPA
      23.10  Consent of KPMG Peat Marwick LLP
      23.11  Consent of Wolf & Company, P.C.
</TABLE>
 
- ------------------------
* Previously filed in Amendment No. 1 to Form S-4 Registration Statement.

<PAGE>

                                                                 EXHIBIT 23.1 

                       INDEPENDENT AUDITORS' CONSENT

To the Board of Directors and Shareholders of Isolyser Company, Inc.

We consent to the incorporation by reference in Post Effective Amendment No. 
1 to Registration Statement No. 333-3436 of Isolyser Company, Inc. on Form 
S-4 of our report dated February 9, 1996 (March 26, 1996 as to Note 13), 
appearing in the Annual Report on Form 10-K of Isolyser Company, Inc. for the 
year ended December 31, 1995 and to the reference to us as experts in the 
Proxy Statement/Prospectus, which is part of this Registration Statement.

/s/  DELOITTE & TOUCHE LLP

DELOITTE & TOUCHE LLP
Atlanta, Georgia
July 2, 1996




<PAGE>

                                                                    EXHIBIT 23.2

                         INDEPENDENT AUDITORS' CONSENT


The Board of Directors
Microtek Medical, Inc.:


We consent to the use of our report incorporated by reference in the proxy 
statement/prospectus of Microtek Medical, Inc. and Isolyser Company, Inc. and 
to the reference to our firm under the heading "Experts" in the proxy 
statement/prospectus.



                                                  /s/ KPMG PEAT MARWICK LLP
                                                 -----------------------------
Jackson, Mississippi                              KPMG Peat Marwick LLP
July 2, 1996




<PAGE>

                                                                    EXHIBIT 23.3


                      INDEPENDENT AUDITORS' CONSENT


The Board of Directors
White Knight Healthcare, Inc.:

We consent to the use of our report incorporated by reference in the proxy 
statement/prospectus of Microtek Medical, Inc. and Isolyser Company, Inc. and 
to the reference to our firm under the heading "Experts" in the proxy 
statement/prospectus.



                                                   /s/ KPMG PEAT MARWICK LLP
                                                   ----------------------------
Greenville, South Carolina                         KPMG Peat Marwick LLP
July 2, 1996




<PAGE>

                                                                    EXHIBIT 23.4


                        CONSENT OF INDEPENDENT AUDITOR


We consent to the reference to our firm under the caption "Experts" and to 
the use of our report dated February 15, 1995, except for the first paragraph 
of Note 7, as to which the date is May 31, 1995, with respect to the 
financial statements of SafeWaste Corporation incorporated by reference in 
Post-Effective Amendment No. 1 to the Registration Statement (Form S-4 No. 
333-3436) and related Prospectus of Isolyser Company, Inc. for the 
registration of shares of its common stock.



                                                 /s/ ERNST & YOUNG LLP
                                                ------------------------------
                                                 ERNST & YOUNG LLP

July 2, 1996
Charlotte, North Carolina



<PAGE>


                                                                 EXHIBIT 23.7 

                        MORGAN KEEGAN & COMPANY, INC.



                   CONSENT OF MORGAN KEEGAN & COMPANY, INC.



     We hereby consent to the use of our opinion dated June 21, 1996 as an 
exhibit to the Registration Statement on Form S-4 relating to the merger of 
MMI Merger Corp., a wholly-owned subsidiary of Isolyser Company, Inc., with 
and into Microtek Medical, Inc. and as an Annex to the Joint Proxy 
Statement/Prospectus contained in such Registration Statement, and to the 
references to our firm name under the captions "Summary", "The Merger - 
Background of the Merger", "The Merger - Isolyser's Reasons for the Merger; 
and "The Merger - Opinion of Isolyser's Financial Advisor" in such Proxy 
Statement/Prospectus. In giving such consent, we do not thereby admit and we 
hereby disclaim that we come within the category of persons whose consent is 
required under Section 7 of the Securities Act of 1933, as amended, and the 
rules and regulations of the Securities and Exchange Commission thereunder, 
nor do we thereby admit that we are experts with respect to any part of such 
Registration Statement within the meaning of the term "experts" as used in 
the Securities Act of 1933, as amended, or the rules and regulations of the 
Securities and Exchange Commission thereunder.


                                                MORGAN KEEGAN & COMPANY, INC. 

                                                By:       James Dwyer
                                                   -------------------------- 
                                             Title: Senior Vice President
                                                   -------------------------- 

July 1, 1996


<PAGE>

                 [GOLDMAN, SACHS & CO. LETTERHEAD]



PERSONAL AND CONFIDENTIAL
- -------------------------



June 23, 1996



Board of Directors
Microtek Medical, Inc.
512 Lehmberg Road
Columbus, MS 39702

Re: Registration Statement File No. 33-33436 of
    Isolyser Company, Inc.


Gentlemen:

Reference is made to our opinion letter dated June 23, 1996 with respect to 
the fairness to the holders of the outstanding shares of Common Stock, par 
value $.01 per share (the "Shares"), of Microtek Medical, Inc. ("Microtek") 
of the Exchange Ratio (as defined below) of shares (or fraction thereof) of 
Common Stock, par value $.001 per share (the "Isolyser Shares"), of Isolyser 
Company, Inc. ("Isolyser") to be received for each Share pursuant to the 
Agreement and Plan of Merger dated as of March 15, 1996, and amended as of 
June 23, 1996, among Isolyser, MMI Merger Corp. ("MMI"), a wholly-owned 
subsidiary of Isolyser, and Microtek (the "Agreement"). Pursuant to the 
Agreement, MMI will be merged with Microtek and each outstanding Share not 
held in the treasury of Microtek or owned by Isolyser or any direct or 
indirect wholly-owned subsidiary of Isolyser or Microtek will be converted 
into the right to receive that number of Isolyser Shares equal to the 
quotient, computed to four decimal places (the "Exchange Ratio"), of $16.50 
divided by the average per Isolyser Share closing price as reported on the 
NASDAQ National Market System for the twenty days immediately preceding the 
fifth trading day prior to the Effective Date (as defined in the Agreement), 
except that in no event will the Exchange Ratio be less thant 1.1000 or 
greater than 1.6500.

The foregoing opinion letter is for the information and assistance of the 
Board of Directors of Microtek in connection with its consideration of the 
transaction contemplated therein and is not to be used, circulated, quoted or 
otherwise referred to for any purpose, nor is it to be filed with, included 
in or referred to in whole or in part in any registration statement, proxy 
statement or any other document, except in accordance with our prior written 
consent.

In that regard, we hereby consent to the reference to the opinion of our Firm 
under the captions "Summary - Opinion of Microtek's Financial Advisor" and 
"The Merger - Opinion of Microtek's Financial Advisor" and to the inclusion 
of the foregoing opinion in the Joint Proxy Statement included in the 
above-mentioned Registration Statement. In giving such consent, we do not 
thereby admit that 

<PAGE>


Microtek Medical, Inc.
June 23, 1996
Page Two



we come within the category of persons whose consent is required under 
Section 7 of the Securities Act of 1933 or the rules and regulations of the 
Securities and Exchange Commission thereunder.


Very truly yours,


[SIGNATURE]


GOLDMAN, SACHS & CO.



<PAGE>

                                                                    EXHIBIT 23.9



                        INDEPENDENT AUDITOR'S CONSENT


The Board of Directors
Medi-Plast International, Inc.

I consent to the use of my report incorporated by reference in the proxy 
statement/prospectus of Microtek Medical, Inc. and Isolyser Company, Inc. and 
to the reference to my firm under the heading "Experts" in the proxy 
statement/prospectus.



                                                 /s/ OLIN J. HARRELL, CPA
                                                ------------------------------
Atlanta, Georgia                                 Olin J. Harrell, CPA
July 2, 1996




<PAGE>

                                                                   EXHIBIT 23.10


                       CONSENT OF INDEPENDENT AUDITORS


We consent to the reference to our firm under the caption "Experts" in the 
Registration Statement (Form S-4) and related prospectus of Isolyser Company, 
Inc. for the registration of shares of its common stock and to the 
incorporation by reference therein of our report dated August 28, 1995, with 
respect to the statements of operations and accumulated deficit and cash 
flows of CliniTech (a former division of Sterile concepts, Inc.) for the year 
ended September 30, 1992 and for the period from October 1, 1992 to February 
8, 1993, included in its Current Report on Form 8-K filed with the Securities 
and Exchange Commission on October 3, 1995.



                                                 /s/ KPMG PEAT MARWICK LLP
                                                ------------------------------
                                                 KPMG Peat Marwick LLP

Richmond, Virginia
July 2, 1996



<PAGE>


                                  [LETTERHEAD]


                                                                EXHIBIT 23.11 


                           INDEPENDENT AUDITORS' CONSENT

                                      -----

We consent to the incorporation by reference in Post Effective Amendment No. 
1 to Registration Statement No. 333-3436 of Isolyser Company, Inc. on Form 
S-4 of our report dated April 5, 1996 on the financial statements of the 
Venodyne Division of Advanced Instruments, Inc., as of February 24, 1996 and 
the eleven month period then ended, appearing in the Annual Report on Form 
10KA of Microtek Medical, Inc. for the year ended November 30, 1995 and 
incorporated by reference herein. We also consent to the reference to us 
under the heading "Experts" in the joint proxy statement/prospectus.



/s/ WOLF & COMPANY, P.C.
- -----------------------------------
WOLF & COMPANY, P.C.


Boston, Massachusetts
July 2, 1996


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