ISOLYSER CO INC /GA/
S-4/A, 1996-05-23
ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES
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<PAGE>
   
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 23, 1996
    
 
   
                                                       REGISTRATION NO. 333-3436
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
   
                                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  (Primary Standard Industrial  (I.R.S. Employer
             of               Classification Code Number)    Identification
      incorporation or                                            No.)
       organization)
</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. / /
    
                            ------------------------
 
    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>
FORM S-4 ITEM NUMBER AND CAPTION                                    LOCATION OR HEADING IN PROXY 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 Proxy
                                                                  Statement/Prospectus
       2.  Inside Front and Outside Back Cover Pages of
            Prospectus..........................................  Inside Front Cover Page of 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 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>
FORM S-4 ITEM NUMBER AND CAPTION                                    LOCATION OR HEADING IN PROXY 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;
                                                                  Special Meeting of Microtek; 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
 
                            ------------------------
 
   
                                                                    May 28, 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 June 28, 1996,
at the executive offices of  Microtek, 512 Lehmberg Road, Columbus,  Mississippi
(together with any adjournments or postponements thereof, the "Special Meeting")
 .
    
 
    At  the  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 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  $14.50 or greater  than $18.50) of  Isolyser
Common  Stock as  reported on The  Nasdaq Stock  Market for the  20 trading days
immediately preceding the second 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 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   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 SPECIAL MEETING.
 
    It is  important  that  your  shares be  present  at  the  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
   
                             MICROTEK MEDICAL, INC.
                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS
                                 TO BE HELD ON
                                 JUNE 28, 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 June 28,
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 (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  April 30,  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
May 28, 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
PROXY STATEMENT/PROSPECTUS
 
   
                                PROXY STATEMENT
                             MICROTEK MEDICAL, INC.
                     SPECIAL MEETING OF STOCKHOLDERS TO BE
                             HELD ON JUNE 28, 1996
    
                            ------------------------
                                   PROSPECTUS
                             ISOLYSER COMPANY, INC.
                                  COMMON STOCK
                            ------------------------
 
   
    This Proxy  Statement/Prospectus  is  being  furnished  to  stockholders  of
Microtek  Medical, Inc., a Delaware corporation ("Microtek"), in connection with
the solicitation of proxies by the Board of Directors of Microtek for use at the
Special Meeting of Stockholders to  be held at 10:00  a.m., local time, on  June
28,  1996,  at  512  Lehmberg Road,  Columbus,  Mississippi  (together  with any
adjournment or postponement thereof, the "Special Meeting").
    
 
    Proxies are  being  solicited to  vote  in favor  of  (i) the  approval  and
adoption  of an Agreement and  Plan of Merger dated  March 15, 1996 (the "Merger
Agreement")  by  and  among  Isolyser  Company,  Inc.,  a  Georgia   corporation
("Isolyser"),  MMI Merger Corp.,  a Delaware corporation  and a newly organized,
wholly-owned subsidiary of Isolyser  (the "Isolyser Subsidiary"), and  Microtek,
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  $14.50 or greater  than $18.50) of
Isolyser Common Stock  as reported  on The Nasdaq  Stock Market  for the  twenty
trading days immediately preceding the second trading day prior to the effective
date of the Merger (the "Effective Date").
 
    A   copy   of   the   Merger   Agreement   is   attached   to   this   Proxy
Statement/Prospectus as Annex  A and  is incorporated herein  by reference.  All
capitalized terms not otherwise defined in this 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 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  Proxy Statement/Prospectus and the enclosed proxy card are first being
mailed to stockholders of Microtek on or about May 28, 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 PROXY
                STATEMENT/PROSPECTUS. ANY REPRESENTATION TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.
                            ------------------------
 
       THE DATE OF THIS PROXY STATEMENT/PROSPECTUS IS            , 1996.
<PAGE>
                             AVAILABLE INFORMATION
 
    This 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  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  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 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 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 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 JUNE 21, 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.
    
 
   
        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.
    
 
                                       2
<PAGE>
    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 Microtek  stockholder 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  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 Proxy Statement/Prospectus.
    
 
    NO  PERSON  HAS BEEN  AUTHORIZED  TO GIVE  ANY  INFORMATION OR  TO  MAKE ANY
REPRESENTATION NOT CONTAINED  IN THIS 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 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  PROXY
STATEMENT/PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES,
CREATE  AN IMPLICATION THAT, SINCE THE  DATE OF THIS 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 Proxy Statement/Prospectus......................................................................          5
Special Meeting of Microtek................................................................................         16
The Merger.................................................................................................         16
Isolyser and Microtek Pro Forma Combined Financial Information.............................................         39
Isolyser Pro Forma Combined Financial Information..........................................................         46
Microtek Pro Forma Combined Financial Information..........................................................         48
Comparative Rights of Isolyser Shareholders and Microtek Stockholders......................................         53
Option Proposal............................................................................................         60
Legal Matters..............................................................................................         63
Experts....................................................................................................         63
Stockholder's Proposals....................................................................................         63
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 PROXY STATEMENT/PROSPECTUS
 
    THE  FOLLOWING IS  A SUMMARY OF  CERTAIN INFORMATION  CONTAINED ELSEWHERE IN
THIS PROXY  STATEMENT/ PROSPECTUS.  THE SUMMARY  IS NECESSARILY  INCOMPLETE  AND
SELECTIVE  AND IS  QUALIFIED IN  ITS ENTIRETY  BY THE  MORE DETAILED INFORMATION
CONTAINED IN THIS PROXY  STATEMENT/PROSPECTUS, INCLUDING THE APPENDICES  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   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  "Merger  Agreement").  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 $14.50 or greater than $18.50)
per  share  of Isolyser  Common Stock  as  reported on  The Nasdaq  Stock Market
("Nasdaq") for  the twenty  days immediately  preceding the  second trading  day
prior  to  the  effective date  of  the  Merger. See  "The  Merger."  This 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 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 two trading days before the  consummation
of  the Merger; provided, however, that the Determination Price may not be lower
than $14.50 or higher than $18.50. See "The Merger -- General."
    
 
    ISOLYSER'S REASONS FOR  THE MERGER.   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
 
                                       5
<PAGE>
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.
 
    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  March 15,  1996, 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. 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  Proxy
Statement/Prospectus  as Annex B, and stockholders of Microtek are urged to read
such opinion in its entirety. See "The Merger -- Opinion of Isolyser's Financial
Advisor."
 
    OPINION OF MICROTEK'S FINANCIAL ADVISOR.  On March 15, 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 Special Meeting. 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
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."
 
    VOTE  REQUIRED FOR MERGER PROPOSAL.  The affirmative votes of the holders of
a majority of the  outstanding shares of Microtek  Common Stock are required  to
approve  the Merger  Agreement on  behalf of  Microtek. See  "Special Meeting of
Microtek."
 
                                       6
<PAGE>
   
    Certain stockholders of Microtek  who own of  record approximately 46.3%  of
the shares of Microtek Common Stock entitled to vote at the Special Meeting have
granted Isolyser a proxy to vote all of their shares of Microtek Common Stock in
favor  of the adoption and approval of  the Merger Agreement. In addition, those
officers, directors and affiliates of Microtek  who have not granted proxies  to
Isolyser  own of  record approximately  two % of  the shares  of Microtek Common
Stock entitled to vote at the Special Meeting. See "Special Meeting of  Microtek
- -- Quorum and Voting."
    
 
    The consummation of the Merger will not require the vote of the stockholders
of  Isolyser,  and the  Merger is  not  being presented  to the  stockholders of
Isolyser for  their approval.  Isolyser, the  sole stockholder  of the  Isolyser
Subsidiary,  has also approved and adopted the  Merger on behalf of the Isolyser
Subsidiary.
 
    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  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
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 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  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
 
                                       7
<PAGE>
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 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 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  August 31,  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  Microtek, if the Determination Price is
below $13.00 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  August  31, 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 August 31,  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
 
                                       8
<PAGE>
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."
 
        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.
    
 
                                       9
<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".
 
                                       10
<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".
 
                                       11
<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.................................       0.08      (0.03)       (0.04)           0.01
  Weighted average number of common and common equivalent
   shares outstanding......................................     21,112     23,742       30,811          35,491
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 one
    share 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.
 
                                       12
<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.
    
 
                                       13
<PAGE>
    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 one share 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      --            5.50
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.............................................................................  $    0.08   $  --       $  --
    1994.............................................................................      (0.03)     --          --
    1995.............................................................................      (0.04)     --          --
    Three-months ended February 29, 1996.............................................       0.01      --            5.50
</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 (through May 20, 1996)...................................      21.00      11.75      18.00      12.50
</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  May 20, 1996, the most recent practicable date prior to the date of this
Proxy Statement/ Prospectus, the last reported sale price of the Isolyser Common
Stock on Nasdaq was  $13.50 per share  and the last reported  sale price of  the
Microtek Common Stock on Nasdaq was $13.13 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 two-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>
                          SPECIAL MEETING OF MICROTEK
 
   
    This 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 Special Meeting to be held on June 28, 1996. Proxies in
the  form enclosed will be  voted at the Special  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 Proxy Statement/Prospectus and
the enclosed proxy card will first be sent to stockholders is May 28, 1996.
    
 
   
    OUTSTANDING CAPITAL STOCK AND RECORD DATE.  The record date for stockholders
of Microtek entitled to vote at the Special Meeting (the "Record Date") is April
30, 1996. At the close of business  on that day, there were 4,664,546 shares  of
Microtek Common Stock outstanding and entitled to vote at the Special 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 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  46.3%  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 (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.   The accompanying  proxy  is being  solicited on
behalf of the Microtek  Board of Directors. The  expense of preparing,  printing
and  mailing the form of proxy and the material used in the solicitation thereof
will be borne by Microtek. In addition to  the use of the mails, proxies may  be
solicited  by personal interview, telephone  and telegram by directors, officers
and employees  of Microtek.  Arrangements  have also  been made  with  brokerage
houses,  banks and other custodians, nominees and fiduciaries for the forwarding
of soliciting  materials to  the beneficial  owners of  the shares  of  Microtek
Common  Stock held of record  by such persons, and  Microtek will 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 Proxy Statement/Prospectus as
Annex  A.  The  summary  of  the  Merger  Agreement  contained  in  this   Proxy
Statement/Prospectus  does not  purport to be  complete and is  qualified in its
entirety by reference to the complete text of such document.
 
                                       16
<PAGE>
    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 $14.50  or greater than  $18.50) per share  of
Isolyser  Common Stock on  Nasdaq for the 20  trading days immediately preceding
the two trading days 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.
 
   
    The following table illustrates the consideration to be received by Microtek
stockholders  for  each  outstanding  share of  Microtek  Common  Stock assuming
approval of the Merger and without regard to cash payments in lieu of fractional
shares.
    
 
   
<TABLE>
<CAPTION>
    AVERAGE
    CLOSING      DETERMINATION   EXCHANGE    NOMINAL
   PRICE (1)       PRICE (1)    RATIO (1)   VALUE (1)
- ---------------  -------------  ----------  ----------
<S>              <C>            <C>         <C>
  $  20.00(2)       $18.50          0.8919   $  17.84
  $  18.50(2)       $18.50          0.8919   $  16.50
  $  17.50(2)       $17.50          0.9429   $  16.50
  $  16.50(2)       $16.50          1.0000   $  16.50
  $  15.50(2)       $15.50          1.0645   $  16.50
  $  14.50(2)       $14.50          1.1379   $  16.50
  $  13.00(3)       $14.50          1.1379   $  14.79
</TABLE>
    
 
- ------------------------
 
   
(1) The Determination Price is equal to the average closing price (the  "Average
    Closing  Price") per  share of  Isolyser Common Stock  on Nasdaq  for the 20
    trading days immediately preceding the two trading days 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 $14.50
    per share, then the Determination Price shall be deemed to have been $14.50;
    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 $18.50
    per share, then the  Determination Price shall be  deemed to be $18.50.  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 two-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 Merger  Agreement provides the  Determination Price shall  not be  lower
    than  $14.50 or  higer than  $18.50. Therefore,  the Exchange  Ratio remains
    fixed at (a)  0.8919 at  an Average  Closing Price  $18.50 or  more and  (b)
    1.1379  at  an Average  Closing Price  of  $14.50 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
    
 
                                       17
<PAGE>
   
    Average Closing  Price  exceeds  $18.50  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 $14.50 nor more than $18.50;  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  $14.50
    per share.
    
 
   
(3)  In the event that  the Average Closing Price  falls below $13.00 per share,
    the Board of Directors of 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 1.1379 Isolyser Shares  for each share of Microtek  Common
    Stock,  or (iii) negotiate with Isolyser  to increase the Exchange Ratio. In
    determining what  alternatives  to  follow under  these  circumstances,  the
    Microtek  Board of  Directors will  take into  account, consistent  with its
    fiduciary duties, all relevant facts and circumstances existing at the  time
    including,  without limitation, whether  Isolyser is prepared  or willing to
    increase 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 Microtek Board  in recommending  adoption of the
    Merger Agreement initially (see  "The Merger --  Microtek's Reasons For  the
    Merger"),  and the  advice of its  financial advisors and  legal counsel. By
    approving the Merger Agreement, the Microtek stockholders will be deemed  to
    be  authorizing  the Microtek  Board to  determine, in  the exercise  of its
    fiduciary duties, to proceed with any of the alternatives described above in
    the event the Average Closing Price is below $13.00 per share. If,  however,
    the  Microtek Board elects to pursue  alternative (iii), as described above,
    and Isolyser  agrees  to  increase  the Exchange  Ratio  and  thereby  issue
    additional shares of Isolyser Common Stock for each share of Microtek Common
    Stock,  the  proxy statement/prospectus  will  be recirculated  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. See "The  Merger
    --  Amendment  of  the  Merger  Agreement;  Waiver  of  Conditions"  and "--
    Termination of Merger Agreement."
    
 
   
    Microtek will issue a press release on  June 27, 1996 (the day prior to  the
Microtek  stockholders' meeting  to consider  the Merger  Proposal, and  the day
following  the  calculation  of  the   Determination  Price)  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. From  and
after   June  26,  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.  Microtek has  arranged for
Microtek stockholders to submit completed proxies by facsimile transmission. 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 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
 
                                       18
<PAGE>
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.
 
   
    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's 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
 
                                       19
<PAGE>
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 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)  and
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 Merger Agreement.
After the close of the  market on Friday, March  15, 1996, the Merger  Agreement
was  executed by Microtek and Isolyser, and  a public announcement of the Merger
Agreement and the proposed Merger was made before the commencement of trading on
Monday, March 18, 1996.
    
 
ISOLYSER'S REASONS FOR THE MERGER
 
    In approving  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 in  preparing the  Merger Agreement: (i)  the method  of
establishing  the consideration payable in respect  of the Merger, including the
method of establishing  the Determination  Price and  the right  of 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 two trading  days before the Effective  Date is less than  $13.00;
(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  issues, the Isolyser Board unanimously  determined at its special meeting
held on March 15, 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
 
    Isolyser  considered a number of factors  in the course of its deliberations
at its Board meeting held on March 15, 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. 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
 
                                       20
<PAGE>
   
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 of Microtek would hold up  to approximately 17% of the  outstanding
shares  of common stock  of Isolyser immediately following  the Merger; (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  to the effect that, subject to the assumptions made, matters considered
and limits of review as set forth in such opinion, the terms of the Merger  were
fair to the shareholders of Isolyser from a financial point of view.
    
 
MICROTEK'S REASONS FOR THE MERGER
 
    At  a meeting  held on  March 12,  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 a subsequent 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 Merger
Agreement was fair to the holders of the shares of Microtek Common Stock.
 
    At the March  15, 1996  meeting, 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 $13.00 per share;
    
 
        (v) The presentation of Microtek's financial advisor, Goldman Sachs, and
    its  written opinion to the effect that,  as of March 15, 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'
 
                                       21
<PAGE>
   
    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 is attached  as Annex C hereto and is  incorporated
    herein by reference;
    
 
       (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  $16.50)  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 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, 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 March 15, 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 MARCH 15, 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
 
                                       22
<PAGE>
ARRIVING  AT SUCH  OPINION, IS  ATTACHED TO  THIS PROXY  STATEMENT/PROSPECTUS AS
ANNEX B. MICROTEK 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  March 15 (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
March 15, 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 24.7%, 18.8%  and 14.3% to  pro forma  combined
1995,  1996 and 1997 sales;  39.6%, 26.1% and 19.2%  to pro forma combined 1995,
1996, and 1997 gross profit; 100.7%, 28.6% and 20.8% to pro forma combined 1995,
1996 and 1997 operating cash flow; 285.3%,  29% and 20.5% to pro forma  combined
1995, 1996 and 1997
    
 
                                       23
<PAGE>
operating income; and 402%, 24.3% and 19.1% 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 $14.50  and  $18.50 as  from  15.8% to  12.8%  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  eight  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., Sterile  Concepts
Holdings,  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
March 14, 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,  book  value,  and  projected 1996  earnings  per  share.  This analysis
indicated that the median multiple for  sales was .88x, for operating cash  flow
was  9.0x, for operating  income was 16.2x,  for net income  was 22.4x, for book
value was  3.0x  and  for  earnings  per  share  was  17.2x.  This  compared  to
corresponding multiples for Microtek for sales of 2.58x, for operating cash flow
of  13.7x, for operating income  of 17.7x, for net income  of 25.4x and for book
value of 2.8x. 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  $23.6
million  in respect of sales,  $76.0 million in respect  of operating cash flow,
$112.0 million in respect of operating  income, $82.9 million in respect of  net
income,  $83.5 million in respect of book  value and $80.8 million in respect of
projected 1996 net income. Morgan Keegan concluded that, based on this analysis,
Microtek had an implied equity value range of $76 to $83 million. Morgan  Keegan
placed limited emphasis on this method of analysis in rendering its opinion.
    
 
   
    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  0.94x, 8.9x  and 11.0x,  respectively; and
median market values  as multiples of  net income  and book value  of 20.1x  and
3.7x,  respectively.  Morgan  Keegan  applied these  multiples  to  Microtek and
calculated median indicative equity values of $16.2 million in respect of sales,
$53.6 million in  respect of operating  cash flow, $49.5  million in respect  of
operating  income, $57.1 million in respect of  net income, and $77.2 million in
respect of book  value. 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 40.0% 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 $82.2  million. Morgan  Keegan
concluded  that, based upon this analysis,  Microtek had implied equity value in
the range of $54 to $77 million. In Morgan Keegan's judgment, the application of
merger and  acquisition  transaction  multiples  to the  pro  forma  results  of
Microtek's  fiscal year ended November 30, 1995 understates value. For this, and
other reasons,  Morgan Keegan  did  not rely  significantly  on this  method  of
analysis in rendering its opinion.
    
 
    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
 
                                       24
<PAGE>
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.
 
   
    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 $95
million to $116 million.
    
 
    In rendering its opinion, Morgan  Keegan placed significant emphasis on  the
discounted  cash  flow  analysis.  However, discounted  cash  flow  valuation is
dependent on a  number of  assumptions, including the  accuracy of  management's
projections,  and the  selection of an  appropriate terminal  value and discount
rate to apply thereto.
 
    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 March 15, 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 opinion,  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
 
                                       25
<PAGE>
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 $150,000 for rendering its opinion  with respect to the Merger, and  will
receive  a fee of $350,000 upon consumation 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 Merger  Agreement is  fair to  the holders  of shares of
Microtek Common Stock.
 
    THE FULL TEXT OF THE WRITTEN OPINION OF GOLDMAN SACHS DATED MARCH 15,  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 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
 
                                       26
<PAGE>
   
    Standard & Poor's  Healthcare index, the  indexed historical trading  prices
    for  the shares of Isolyser Common Stock  and a composite index comprised of
    six other  comparable  publicly traded  corporations:  AMSCO  International,
    Inc.,  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 $11.25 per share  of Microtek Common Stock  and
    $17.00 per share of Isolyser Common Stock, the closing prices of such shares
    on  Nasdaq on  March 14, 1996  (the date 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  3.0x, with a mean of 1.8x and a median of 1.5x, LTM EBITDA, which ranged
    from 5.9x to  15.7x, with a  mean of 10.3x  and a median  of 10.2x, and  LTM
    EBIT,  which ranged from 7.4x to 37.5x, with a mean of 16.2x and a median of
    13.7x, compared to levered multiples of 2.3x, 12.4x and 16.1x, respectively,
    for Microtek  and  a levered  multiple  of  6.3x 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 13.1x to 25.4x,  with a mean of  18.8x
    and  a median of 17.8x, compared to  22.4x 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 10.5x to 18.4x for estimated calendar  year 1996, with a mean of  14.7x
    and  a median of 14.6x, and 11.1x to 15.5x for estimated calendar year 1997,
    with a mean of 13.3x and a median of 12.6x, compared, for Microtek, to 17.3x
    for estimated calendar year 1996 and 10.0x for estimated calendar year  1997
    and,  for Isolyser, to 48.6x for estimated  calendar year 1996 and 22.7x for
    estimated calendar year 1997; LTM EBITDA  margins, LTM EBIT margins and  LTM
    net  income margins, which ranged from 9.5% to 26.5% for LTM EBITDA margins,
    with a mean of 16.9% and a  median of 15.4%, compared to 18.9% for  Microtek
    (with Isolyser's LTM EBITDA margins being not meaningful), 5.5% to 20.9% for
    LTM  EBIT margins, with a  mean of 12.4% and a  median of 11.0%, compared to
    14.6% for Microtek (with Isolyser's LTM EBIT margins being not  meaningful),
    and  3.0% to 11.9%  for LTM net  income margins, with  a mean of  6.9% and a
    median of  5.9%, compared  to 7.7%  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, Montgomery
    Securities research in the case of Isolyser, and Microtek management in  the
    case  of Microtek as no public  estimates were available) ranging from 12.5%
    to 20.0%, with a mean of 16.8% and a median of 17.5%, compared to 38.7%  for
    Microtek  and 35.0%  for Isolyser;  net debt  to net  capitalization ratios,
    which ranged from 5.2% to 47.0%, with a mean of 29.2% and a median of 32.9%,
    compared to 47.0% for Microtek and (31.1%) for Isolyser; and a ratio of  the
    1997  estimated P/E compared  to the IBES estimated  EPS growth rate ranging
    from 0.6x to  0.9x, with a  mean and median  of 0.8x, compared  to 0.3x  for
    Microtek and 0.6x for Isolyser.
    
 
       (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
 
                                       27
<PAGE>
   
    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  $14.50 to  $18.50  of
    Isolyser  Common Stock  as well  as per  share prices  of $13.00  and $20.00
    (values outside of the collar) of Isolyser Common Stock under the  following
    three  scenarios:  The first  scenario relied  on the  respective companies'
    managements' estimates  and  combined  Microtek and  Isolyser  as  currently
    existing  (the "First Case");  the second scenario  relied on the respective
    companies' managements'  estimates and  combined  Microtek and  Isolyser  as
    currently  existing but  including the  consummation of  certain acquisition
    transactions under consideration by Microtek (the "Second Case"); the  third
    scenario  relied  on the  respective  companies' managements'  estimates and
    combined Microtek  and  Isolyser as  currently  existing but  including  the
    realization  of $3.5 million in pre-tax cost savings and operating synergies
    (the "Synergies")  over  two years  and  the consummation  of  the  possible
    acquisitions  by Microtek  (the "Third Case").  Based on  such analyses, the
    proposed transaction would be accretive to Isolyser's stockholders on an EPS
    basis in 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'  First Case  financial  forecasts for  Microtek and
    Isolyser's managements'  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 based on  the First Case,
    based on financial data provided to  Goldman Sachs by Microtek and  Isolyser
    managements.  This analysis  indicated that Microtek  would have contributed
    28.5% to combined revenues in 1995 and an estimated 19.3% in 1996 decreasing
    to an estimated 9.1% in 2000, 46.1% to combined gross profit in 1995 and  an
    estimated 30.0 in 1996 decreasing to an estimated 11.5% in 2000, (385.2)% to
    combined  EBIT  (such  contribution  being  negative  because  Isolyser  had
    negative EBIT for 1995) in 1995 and an estimated 33.9% in 1996 decreasing to
    an estimated 10.0% in 2000, (424)% to combined net income (such contribution
    being negative because Isolyser had negative net income in 1995) in 1995 and
    an estimated 28.1%  in 1996  decreasing to an  estimated 9.9%  in 2000,  and
    32.3%  to combined selling, general and  administration expenses in 1995 and
    an estimated 26.5% in 1996 decreasing to an estimated 12.3% 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
    (114.3)%  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%.
 
       (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 $13.00 to $20.00 per share of Isolyser Common Stock.
 
           In  the  First  Case, those  calculations  yielded  levered aggregate
    consideration values  ranging  from  $97.3 million  to  $113.5  million  for
    Microtek, assuming $18.8 million in net debt. In the
 
                                       28
<PAGE>
    Second  Case,  those  calculations yielded  levered  aggregate consideration
    values ranging from $105.2 million to $121.3 million for Microtek,  assuming
    $26.7 million in net debt. In both the First Case and the Second Case, those
    calculations  yielded  aggregate  equity consideration  values  ranging from
    $78.5 million to $94.7 million for  Microtek and total values delivered  for
    each  share of Microtek Common Stock ranging  from $14.79 to $17.84 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.
 
           In the  First Case,  Goldman Sachs  considered the  levered aggregate
    consideration as a  multiple of actual  1995 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 3.2x to 3.8x, actual 1995 EBITDA that ranged from 17.2x  to
    20.0x  and actual 1995  EBIT that ranged  from 22.2x to  25.9x; of estimated
    fiscal 1996 net sales that ranged  from 2.4x to 2.8x, estimated fiscal  1996
    EBITDA  that ranged from 9.6x  to 11.1x and estimated  fiscal 1996 EBIT that
    ranged from 12.9x  to 15.0x;  and of estimated  fiscal 1997  net sales  that
    ranged from 2.1x to 2.5x, estimated fiscal 1997 EBITDA that ranged from 7.5x
    to  8.7x and  estimated fiscal  1997 EBIT  that ranged  from 9.4x  to 11.0x.
    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.
 
          In  the Second  Case, Goldman  Sachs considered  the levered aggregate
    consideration as a  multiple of actual  1995 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 3.5x to 4.0x, actual 1995 EBITDA that ranged from 18.6x  to
    21.4x  and actual 1995  EBIT that ranged  from 24.0x to  27.7x; of estimated
    fiscal 1996 net sales that ranged  from 2.4x to 2.8x, estimated fiscal  1996
    EBITDA  that ranged from 9.0x  to 10.4x and estimated  fiscal 1996 EBIT that
    ranged from 12.0x  to 13.8x;  and of estimated  fiscal 1997  net sales  that
    ranged from 2.0x to 2.3x, estimated fiscal 1997 EBITDA that ranged from 6.6x
    to  7.6x  and estimated  fiscal 1997  EBIT  that ranged  from 8.1x  to 9.4x.
    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.
 
        In both the First Case and the Second Case, Goldman Sachs considered the
    aggregate  equity consideration as  a multiple of  actual 1995 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 34.0x to  41.0x; of management estimated 1996  net
    income  of Microtek that  ranged from 21.7x  to 26.2x in  the First Case and
    18.8 to  22.7 in  the Second  Case; of  IBES estimated  1996 net  income  of
    Microtek  that ranged from 24.7x to  29.8x; of management estimated 1997 net
    income of Microtek that  ranged from 14.2x  to 17.1x in  the First Case  and
    11.4x  to 13.7x in the Second Case; and of Microtek's actual 1995 book value
    per share that ranged from 3.7x to 4.5x.
 
       (vii) DISCOUNTED CASH FLOW ANALYSIS. Goldman Sachs performed a discounted
    cash flow analysis under the First  Case and the Second Case. 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 $9.34  to $21.90 in the
    First   Case   and   from   $9.58   to   $23.88   in   the   Second    Case.
 
                                       29
<PAGE>
   
    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 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
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
 
                                       30
<PAGE>
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.
 
    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 if all
other  conditions to the consummation of the Merger are satisfied or waived, the
Merger will become effective, unless the
 
                                       31
<PAGE>
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
Microtek  stockholders  at  the  Special Meeting  of  Microtek,  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  the Microtek  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.
 
                                       32
<PAGE>
    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 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.
 
    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) the absence of any material adverse
change with  respect to  Microtek, (b)  receipt of  a satisfactory  letter  from
Microtek's independent accountants with respect to certain financial information
of  Microtek, and (c) 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
 
                                       33
<PAGE>
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.
 
    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  Stockholders, amend the Merger Agreement,
provided that after such stockholder  approval no amendment or modification  may
be made that would adversely affect the Microtek 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  stockholder will  be  deemed  to be  authorization  (but  not a
requirement) of Microtek's  executive officers and  directors to terminate,  not
terminate or modify the Merger Agreement if the Determination Price is less than
$13.00  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 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  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  August 31, 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 Microtek,  if the Average  Closing Price is  below
$13.00 per share.
    
 
                                       34
<PAGE>
   
    If  the  Average Closing  Price  is below  $13.00  per share,  the  Board of
Directors of 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 1.1379
Isolyser Shares for each share of Microtek Common Stock, or (iii) negotiate with
Isolyser to increase  the Exchange  Ratio. In determining  what alternatives  to
follow under these circumstances, the Microtek Board of Directors will take into
account,   consistent  with  its  fiduciary   duties,  all  relevant  facts  and
circumstances existing  at  the  time  including,  without  limitation,  whether
Isolyser  is prepared or willing to increase  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  Microtek  Board  in  recommending
adoption  of  the  Merger Agreement  initially  (see "The  Merger  -- Microtek's
Reasons For the  Merger"), and the  advice of its  financial advisors and  legal
counsel.  By approving the  Merger Agreement, the  Microtek stockholders will be
deemed to be authorizing the Microtek Board to determine, in the exercise of its
fiduciary duties, to proceed with any of the alternatives described above in the
event the Average  Closing Price  is below $13.00  per share.  If, however,  the
Microtek  Board  elects to  pursue alternative  (iii),  as described  above, and
Isolyser agrees  to increase  the Exchange  Ratio and  thereby issue  additional
shares  of Isolyser Common Stock  for each share of  Microtek Common Stock, this
proxy statement/prospectus will be  recirculated 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 August  31, 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 August 31, 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.
 
                                       35
<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  stockholder, 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.
    
 
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 Special  Meeting, may  be
deemed to be an "affiliate" of Microtek within the meaning of Rule 145 under the
Securities  Act. In general, affiliates of Microtek include any person or entity
who controls, is controlled  by or is under  common control with Microtek.  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 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.
 
                                       36
<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 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.
 
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 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
 
                                       37
<PAGE>
   
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.
    
 
                                       38
<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.
    
 
                                       39
<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              (43 )(6)             36
  Additional paid in capital...........................       181,202          20,214           (1,270 )(6)        200,600
                                                                                                  (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>
    
 
                                       40
<PAGE>
                             ISOLYSER AND MICROTEK
              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1993
 
<TABLE>
<CAPTION>
                                                                                          PRO FORMA
                                                          ISOLYSER        MICROTEK        COMBINED
                                                         -----------     -----------     -----------
                                                            (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                      <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     $     0.08
                                                         -----------     -----------     -----------
                                                         -----------     -----------     -----------
Weighted average number of common and common equivalent
 shares outstanding....................................       16,053           5,059         21,112
                                                         -----------     -----------     -----------
                                                         -----------     -----------     -----------
</TABLE>
 
                                       41
<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                             23,742
                                                         -----------      -----------                         -----------
                                                         -----------      -----------                         -----------
</TABLE>
    
 
                                       42
<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                                  30,811
                                                         ----------          ------------                           ------------
                                                         ----------          ------------                           ------------
</TABLE>
    
 
                                       43
<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                                  35,491
                                                            ----------       ------------                           ------------
                                                            ----------       ------------                           ------------
</TABLE>
    
 
                                       44
<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  one-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.
    
 
                                       45
<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>
 
                                       46
<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.
 
                                       47
<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.
    
 
                                       48
<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>
    
 
                                       49
<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>
    
 
                                       50
<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>
    
 
                                       51
<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.
    
 
                                       52
<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
30,605,035  shares of Isolyser Common Stock  and no shares of Isolyser Preferred
Stock were issued  and outstanding  on April  30, 1996.  As of  April 30,  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.
 
   
    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 4,664,546
shares of Microtek Common Stock and  no shares of Microtek Preferred Stock  were
issued  and outstanding on April 30, 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
    
 
                                       53
<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
the corporation's board of directors approves the business combination (a) prior
to  the  date the  interested shareholder  became  an interested  shareholder or
acquired 90% or more of the outstanding voting stock of the corporation), unless
the corporation's board of directors approves the business combination (a) prior
to the  date the  interested  shareholder became  an interested  shareholder  or
acquired  90% or more of the outstanding voting stock of the corporation as part
of the transaction in  which it became an  interested shareholder; or (b)  after
the  date the  interested shareholder  became an  interested shareholder,  if it
acquired 90% or more of  the outstanding voting stock  of the corporation and  a
majority  of  the  remaining  outstanding  voting  stock  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  Combination Provision to  apply. The Isolyser Bylaws  do not contain a
provision electing to be governed by the Business Combinations Provision.
 
    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
 
                                       54
<PAGE>
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 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
 
                                       55
<PAGE>
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.
 
    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
 
                                       56
<PAGE>
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 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
 
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<PAGE>
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 incorporation or bylaws may
authorize the  shareholders or  the board  of  directors to  fix or  change  the
 
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<PAGE>
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
 
                                       59
<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
 
                                       60
<PAGE>
   
of the holders of a  majority of the shares of  Common Stock represented at  the
Special  Meeting. THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" APPROVAL OF THE
OPTION PROPOSAL. As of the date of the Microtek Board resolved 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
 
                                       61
<PAGE>
price  of the Incentive Shares and the exercise price. If the optionee sells the
Incentive Shares before 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.
 
                                       62
<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  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  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 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  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 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.
 
                                       63
<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
<PAGE>
    This  Agreement and Plan of Merger (the  "Agreement") is made as of the 15th
day of March, 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.
 
        (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
 
                                      A-1
<PAGE>
    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 Meeting of MMI's stockholders described in Section  5.8
occurs  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)(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 of  ICI Common Stock as reported on The
    Nasdaq Stock Market ("NMS")  over the twenty  (20) trading days  immediately
    preceding  the second  trading day  prior to  the Effective  Date; provided,
    however, that in  the event  that at  the Effective  Date the  Determination
    Price of a share of ICI Common Stock is less than $14.50 per share, then the
    Determination  Price  shall be  deemed to  have  been $14.50;  and provided,
    further, that in  the event  that at  the Effective  Date the  Determination
    Price of a share of ICI Common Stock is more than $18.50 per share, then the
    Determination Price shall be deemed to be $18.50.
 
        (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, subject to  ICI having  obtained all  requisite shareholder  approval,
    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.  In the event  that ICI shall  not
    have  obtained all  requisite shareholder  approval, ICI  shall nevertheless
    assume the Options as set forth  in the preceding sentence except that  such
    Options   may,  to   the  extent   provided  by   the  Code,   cease  to  be
 
                                      A-3
<PAGE>
    incentive stock options under Section 422  of the Code. 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.
 
        (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.  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,
 
                                      A-4
<PAGE>
    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 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
 
                                      A-5
<PAGE>
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).
 
                                   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;
 
                                      A-6
<PAGE>
        (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.
 
    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)  4,593,220 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
 
                                      A-7
<PAGE>
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 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 February  29, 1996, 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);
 
                                      A-8
<PAGE>
        (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;
 
        (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
 
                                      A-9
<PAGE>
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,  bond, mortgage,  indenture, license agreement,  lease 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,  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
 
                                      A-10
<PAGE>
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  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.
 
    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.
 
                                      A-11
<PAGE>
    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.
 
    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 hereof,  the
consideration 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
 
                                      A-12
<PAGE>
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 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, 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 ICI's  Disclosure Schedule, 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
 
                                      A-13
<PAGE>
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.
 
    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 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,  which financial  statements  as  of
December  31, 1994 and for the fiscal year  then ended have been examined by and
accompanied by  the  report  of  Deloitte  &  Touche  LLP  (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
 
                                      A-14
<PAGE>
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 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.
 
                                      A-15
<PAGE>
    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; 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 December  31, 1995. 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 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,  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
 
                                      A-16
<PAGE>
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.
 
    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.
 
    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
 
                                      A-17
<PAGE>
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 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;
 
                                      A-18
<PAGE>
        (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 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)  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 MMI shall promptly mail to its 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 MMI's
    stockholders,   such    Registration   Statement    and   Proxy    Statement
 
                                      A-21
<PAGE>
    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.  MMI STOCKHOLDERS' MEETING.
 
        (a)  MMI 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.
 
    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 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.
 
                                      A-22
<PAGE>
        (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  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
 
                                      A-23
<PAGE>
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.
 
    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
 
                                      A-24
<PAGE>
relative  to  factual   matters  not  otherwise   verified  to  such   counsel's
satisfaction,  dated  the  Closing Date,  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 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
 
                                      A-25
<PAGE>
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.
 
                                   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 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
 
                                      A-26
<PAGE>
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) the  "Indemnified  Parties");
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
    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));
 
                                      A-27
<PAGE>
        (d) by  either ICI  or  MMI if  the  transactions contemplated  by  this
    Agreement  have not been consummated by August 31, 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 MMI if the Determination Price is less than $13.00 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 August  31, 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 August 31, 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 to  adopt this Agreement
without the
 
                                      A-29
<PAGE>
requisite approval of the holders of issued and outstanding shares of MMI Common
Stock. 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: /s/ Kimber L. Vought
 
                                          --------------------------------------
 
                                          ISOLYSER COMPANY, INC.
 
                                          By: /s/ Robert L. Taylor
 
                                          --------------------------------------
 
                                          MMI MERGER CORP.
 
                                          By: /s/ Robert L. Taylor
 
                                          --------------------------------------
 
                                      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
 
March 15, 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 draft of
the Agreement dated  March 15, 1996;  (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  operations,  financial  condition  and  prospects; (3)
reviewed  historical  consolidated  financial   and  operating  data  that   was
 
                                      B-1
<PAGE>
Isolyser Company, Inc.
March 15, 1996
Page 2
 
   
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.
March 15, 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
March 15, 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,  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 0.8919 or greater than 1.1379.
    
 
   
    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>
                                    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)
      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)
</TABLE>
 
                                      II-1
<PAGE>
   
<TABLE>
<C>        <S>
     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)
     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)
</TABLE>
    
 
                                      II-2
<PAGE>
   
<TABLE>
<C>        <S>
     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)
    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)
</TABLE>
    
 
                                      II-3
<PAGE>
   
<TABLE>
<C>        <S>
    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)
    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)
</TABLE>
    
 
                                      II-4
<PAGE>
   
<TABLE>
<C>        <S>
    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)
    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)
</TABLE>
    
 
                                      II-5
<PAGE>
   
<TABLE>
<C>        <S>
    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)
    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
</TABLE>
    
 
                                      II-6
<PAGE>
   
<TABLE>
<C>        <S>
     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>
    
 
    (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 Proxy
Statement/Prospectus contained in this Registration Statement.
    
 
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-7
<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 May 22, 1996.
    
 
                                ISOLYSER COMPANY, INC
 
                                By:              /s/ ROBERT L. TAYLOR
                                      -----------------------------------------
                                                   Robert L. Taylor
                                        PRESIDENT AND CHIEF EXECUTIVE OFFICER
 
   
    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 May 22, 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/ MICHAEL
                SAHADY*                   Executive Vice President and Director
- ----------------------------------------
             Michael Sahady
 
                    /s/ C. FRED           Senior Vice President of Finance,
                HARLOW*                    Chief Financial Officer, Treasurer
- ----------------------------------------   and Director (principal financial and
             C. Fred Harlow                accounting officer)
 
- ----------------------------------------  Director
             Rosdon Hendrix
 
- ----------------------------------------  Director
              Jamal Silim
 
- ----------------------------------------  Director
            Kenneth F. Davis
 
       By:          /s/ ROBERT L.
                 TAYLOR
- ----------------------------------------
   Robert L. Taylor, Attorney-in-Fact
</TABLE>
    
 
                                      II-8
<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>
    

<PAGE>

                                                                  EXHIBIT 5.1 


                        ARNALL GOLDEN & GREGORY
                        2800 ONE ATLANTIC CENTER
                       1201 WEST PEACHTREE STREET
                      ATLANTA, GEORGIA  30309-3400



                               May 22, 1996

Isolyser Company, Inc.
4320 International Boulevard, N.W.
Norcross, Georgia  30093

     Re:  Registration Statement on Form S-4 (Registration No. 333-3436)

Gentlemen:

     This opinion is rendered in connection with the proposed issue and sale 
by Isolyser Company, Inc., a Georgia corporation (the "Company"), of up to 
5,890,793 shares of the Company's Common Stock, $.001 par value (the 
"Shares"), upon the terms and conditions set forth in Registration Statement 
No. 333-3436 on Form S-4 (the "Registration Statement") filed by the Company 
with the Securities & Exchange Commission under the Securities Act of 1933, 
as amended. We have acted as counsel for the Company in connection with the 
proposed issuance and sale of the Shares by the Company.

     In rendering the opinion contained herein, we have relied in part upon 
examination of the Company's corporate records, documents, certificates and 
other instruments and the examination of such questions of law as we have 
considered necessary or appropriate for the purpose of tis opinion. Based 
upon the foregoing, we are of the opinion that the Shares have been duly and 
validly authorized and when sold in the manner contemplated by the 
Registration Statement, and upon receipt by the Company of payment therefor 
as provided in the Registration Statement, they will be legally issued, fully 
paid and non-assessable.

     We consent to the filing of this opinion as an exhibit to the 
Registration Statement and the reference to this firm under the caption "Legal 
Matters" in the Prospectus contained therein. This consent is not to be 
construed as an admission that we are a party whose consent is required to be 
filed with the Registration Statement under the provisions of the Securities 
Act of 1933, as amended.

                                       Sincerely,



                                       ARNALL GOLDEN & GREGORY
                                       ARNALL GOLDEN & GREGORY


<PAGE>


                             ARNALL GOLDEN & GREGORY
                             2800 ONE ATLANTIC CENTER
                            1201 WEST PEACHTREE STREET
                           ATLANTA, GEORGIA  30309-3400





                               May 22, 1996



Microtek Medical, Inc.
512 Lehmberg Road
Columbus, Mississippi  39702

Gentlemen:

     You have asked for our opinion as to the federal income tax consequences 
of a transaction (the "Merger") pursuant to which MMI Merger Corp. 
("Subsidiary"), a Delaware corporation and a newly organized, wholly-owned 
subsidiary of Isolyser Company, Inc. ("Isolyser"), a Georgia corporation, 
will be merged  with and into Microtek Medical, Inc. ("Microtek"), a Delaware 
corporation, with the Microtek shareholders receiving common voting stock of 
Isolyser.  In expressing this opinion, we have reviewed the Agreement and 
Plan of Merger (the "Agreement") dated March 15, 1996, among Isolyser, 
Subsidiary and Microtek, the Form S-4 Registration Statement under the 
Securities Act of 1933 relating to the Merger (Registration No. 333-3436) 
(the "Registration Statement") as filed with the Securities and Exchange 
Commission on April 10, 1996, and, thereafter amended, and such other 
documents as we have deemed relevant. Additionally, we have had such 
discussions with officers and directors of Isolyser and Microtek and others 
as we have deemed relevant and have been provided certain representations in 
writing from management of Isolyser and Microtek.

     Pursuant to the Agreement and for business reasons described in the 
Registration Statement, Isolyser will acquire all of the outstanding stock of 
Microtek.  The above will be accomplished by a merger of Subsidiary with and 
into Microtek pursuant to the applicable laws of Delaware.  Microtek will be 
the surviving corporation in the transaction.  Pursuant to the Merger, 
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 average closing price of Isolyser common stock over a specified 
twenty-day trading period, but no lower than $14.50 or greater than $18.50.  
The Agreement further provides that each share of common stock of Subsidiary 
held by Isolyser immediately prior to the Merger will be converted into and 
become one share of common stock of Microtek.  Under applicable law, Microtek 
stockholders have no appraisal or dissenters' rights.

<PAGE>

Microtek Medical, Inc.
May 22, 1996
Page 2



     No fractional shares of Isolyser common stock will be issued to Microtek 
stockholders in connection with the Merger, but fractional shares of any 
Microtek stockholder will be combined and cash will be paid for any resulting 
fractional share.

     In expressing this opinion we have assumed that the information 
contained in the Registration Statement is current, accurate and complete.  
In addition, we have relied upon the factual and other statements and 
representations made to us by officers and directors of Isolyser and 
Microtek, and have not made any independent investigation of any facts 
pertaining to the Merger.  Among the representations we have relied upon are 
the following:

     (a) After consummation of the Merger, Microtek will hold at least 90 
percent of the fair market value of its net assets and 70 percent of the fair 
market value of its gross assets. (b) After consummation of the Merger, 
Microtek will also hold at least 90 percent of the fair market value of the 
net assets and 70 percent of the fair market value of the gross assets of 
Subsidiary.  (c) Isolyser has no intention of liquidating Microtek, but 
proposes to retain the Microtek common stock and to continue the business of 
Microtek as an operating subsidiary.

     In expressing the opinions contained herein we have also assumed, with 
your permission,  that there exists no plan or intention by the stockholders 
of Microtek to sell or otherwise dispose of 50 percent or more of the shares 
of Isolyser to be received by them in the Merger, and that, as the Agreement 
contemplates, Microtek stockholders will exchange an amount of Microtek stock 
in the Merger representing at least 80 percent of the combined voting and 
equity interests of Microtek.

     Based upon and subject to the foregoing, we are of the opinion that:

     1.   Provided the Merger qualifies as a merger under the applicable laws 
          of Delaware, the Merger will constitute a reorganization within the 
          meaning of IRC Section 368 (a) (1) (A).  The reorganization will 
          not be disqualified by reason of the fact that stock of Isolyser is 
          used in the transaction (IRC Section 368(a) (2) (E)).  Isolyser, 
          Subsidiary, and Microtek will each be "a party to a 
          re-organization" within the meaning of IRC Section 368(b).

     2.   No gain or loss will be recognized to the stockholders of Microtek 
          upon the exchange of their Microtek stock solely for Isolyser 
          voting common stock (IRC Section 354(a) (1)).


<PAGE>

Microtek Medical, Inc.
May 22, 1996
Page 3



     3.   The holding period for purposes of income taxation of the Isolyser 
          voting common stock to be received by the stockholders of Microtek 
          will include the holding period of the Microtek stock exchanged 
          therefor, provided that the Microtek stock is held as a capital 
          asset on the date of the exchange (Section 1223(l)).

     4.   The tax basis of the shares of Isolyser common stock received by a 
          stockholder of Microtek on the exchange of Microtek stock pursuant 
          to the Merger will be the same as the basis of the shares of 
          Microtek common stock exchanged (less any portion of such basis 
          allocable to any fractional interest in any share of Isolyser 
          common stock).

     5.   Cash payments received by Microtek stockholders in lieu of 
          fractional share interests of Isolyser common stock will be treated 
          as if the fractional shares were distributed as part of the 
          exchange and then were redeemed by Isolyser.  These cash payments 
          will be treated as having been received by Microtek stockholders as 
          full payment in exchange for fractional shares redeemed, and will 
          be treated as received in a redemption subject to the provisions of 
          Section 302 of the Code.

     This opinion is being provided for purposes of satisfying the conditions 
specified at Section 6.9 of the Agreement.  It is not intended as specific 
tax advice to any shareholder.  Further, our opinion is only valid to the 
extent that the representations and conditions upon which it is based are 
true and correct.

     We consent to the filing of this opinion as an exhibit to the 
Registration Statement and the reference to this firm under the caption "The 
Merger -- Certain Federal Income Tax Consequences" in the Registration 
Statement.  This consent is not to be construed as an admission that we are a 
party whose consent is required to be filed with the Registration Statement 
under the provisions of the Securities Act of 1933, as amended.

                                                ARNALL GOLDEN & GREGORY 


<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 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
May 21, 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
May 21, 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.




Greenville, South Carolina                                KPMG Peat Marwick LLP
May 21, 1996


<PAGE>

                                                                 EXHIBIT 23.4 



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 
Amendment No. 1 to the Registration Statement (Form S-4 No. 33-33436) and 
related Prospectus of Isolyser Company, Inc. for the registration of shares 
of its common stock.



                                                        /s/ ERNST & YOUNG LLP 

                                                        ERNST & YOUNG
May 21, 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 March 15, 1996 as an 
exhibit to the Registration Statement on Form S-4 relating to the merger of 
Microtek Medical with and into MMI Merger Corp., a wholly-owned subsidiary of 
Isolyser Company, Inc., and as an Annex to the 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: /s/ JAMES DWYER
                                                   -------------------------- 
                                             Title: Senior Vice President     
                                                   -------------------------- 

May 20, 1996




<PAGE>

                 [GOLDMAN, SACHS & CO. LETTERHEAD]



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



May 16, 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 March 15, 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, 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 second trading day prior to the Effective Date 
(as defined in the Agreement), except that in no event will the Exchange 
Ratio be less thant 0.8919 or greater than 1.1379.

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 Proxy Statement included in the above-mentioned
Registration Statement. In giving such consent, we do not thereby admit that 



<PAGE>


Microtek Medical, Inc.
May 16, 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.


                                                         Olin J. Harrell, CPA 

Atlanta, Georgia
May 21, 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
May 21, 1996


<PAGE>

                                                                  Exhibit 23.11


                         INDEPENDENT AUDITORS' CONSENT


We consent to the incorporation by reference in 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 proxy statement/prospectus.




/s/ Wolf & Company, P.C.

WOLF & COMPANY, P.C.



Boston, Massachusetts
May 21, 1996



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