PALL CORP
S-4/A, 1996-12-27
GENERAL INDUSTRIAL MACHINERY & EQUIPMENT, NEC
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<PAGE>   1
 
   
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 27, 1996
    
   
                                                      REGISTRATION NO. 333-17417
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                            ------------------------
 
   
                                AMENDMENT NO. 1
    
   
                                       TO
    
                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
 
                            ------------------------
 
                                PALL CORPORATION
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
   
<TABLE>
<S>                            <C>                            <C>
           NEW YORK                         3599                        11-1541330
(STATE OR OTHER JURISDICTION OF  (PRIMARY STANDARD INDUSTRIAL        (I.R.S. EMPLOYER
INCORPORATION OR ORGANIZATION)   CLASSIFICATION CODE NUMBER)      IDENTIFICATION NUMBER)
                                                       PETER SCHWARTZMAN, SECRETARY
                                                             PALL CORPORATION
           2200 NORTHERN BOULEVARD                       2200 NORTHERN BOULEVARD
            EAST HILLS, N.Y. 11548                        EAST HILLS, N.Y. 11548
                (516) 484-5400                                (516) 484-5400
 (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE     (NAME, ADDRESS, INCLUDING ZIP CODE, AND
 NUMBER, INCLUDING AREA CODE, OF REGISTRANT'S   TELEPHONE NUMBER, INCLUDING AREA CODE, OF
         PRINCIPAL EXECUTIVE OFFICES)                       AGENT FOR SERVICE)
</TABLE>
    
 
   
                                   COPIES TO:
    
 
   
<TABLE>
<S>                                           <C>
            HEYWOOD SHELLEY, ESQ.                       CHRISTOPHER B. NOYES, ESQ.
          CARTER, LEDYARD & MILBURN                        GODFREY & KAHN, S.C.
                2 WALL STREET                              780 N. WATER STREET
           NEW YORK, NEW YORK 10005                  MILWAUKEE, WISCONSIN 53202-3590
                 212-732-3200                                  414-273-3500
</TABLE>
    
 
   
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF THE SECURITIES TO THE
PUBLIC: Upon consummation of the Merger described herein.
    
 
   
     IF THE SECURITIES BEING REGISTERED ON THIS FORM ARE BEING OFFERED IN
CONNECTION WITH THE FORMATION OF A HOLDING COMPANY AND THERE IS A COMPLIANCE
WITH GENERAL INSTRUCTION G, CHECK THE FOLLOWING BOX.  [ ]
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
                              GELMAN SCIENCES INC.
                             600 SOUTH WAGNER ROAD
                           ANN ARBOR, MICHIGAN 48103
 
                                                               December 27, 1996
 
Dear Stockholder:
 
     You are cordially invited to attend the Special Meeting of Stockholders of
Gelman Sciences Inc. ("Gelman") to be held at the offices of Pall Corporation
located at 25 Harbor Park Drive, Port Washington, New York, on Monday, February
3, 1997 at 1:00 p.m., local time.
 
     At this important meeting, you will be asked to approve and adopt the
Agreement and Plan of Reorganization and Merger (the "Merger Agreement")
providing for the merger (the "Merger") of Gelman with a subsidiary of Pall
Corporation, a New York corporation ("Pall"). Pursuant to the Merger Agreement,
each outstanding share of common stock of Gelman (a "Gelman Share") will be
converted into the right to receive shares of common stock of Pall ("Pall
Shares"). Pall Shares are traded on the New York Stock Exchange (the "NYSE")
under the symbol "PLL" and on the London Stock Exchange. The number of Pall
Shares to be received for each Gelman Share in the Merger will be determined by
a formula based on the "Average Trading Price" of a Pall Share. The "Average
Trading Price" means the average of the closing sales prices of a Pall Share for
NYSE composite transactions during the 30 NYSE trading days preceding the third
trading day before the Special Meeting. If the Average Trading Price is between
$25.29 and $27.96, Gelman shareholders will receive for each Gelman Share a
number of Pall Shares (between 1.1804 and 1.3047 Pall Shares) having a value of
$33.00 based on the Average Trading Price. If the Average Trading Price is
$27.96 or more, Gelman shareholders will receive 1.1804 Pall Shares for each
Gelman Share. If the Average Trading Price is $25.29 or less, Gelman
shareholders will receive 1.3047 Pall Shares for each Gelman Share. Cash will be
paid in lieu of fractional Pall Shares. The Gelman Board of Directors will have
the right to terminate the Merger Agreement if the Average Trading Price is less
than $21.00.
 
     Cleary Gull Reiland & McDevitt Inc., Gelman's financial advisor ("Cleary
Gull"), has delivered to the Gelman Board of Directors its written fairness
opinions dated October 27, 1996 and December 27, 1996, to the effect that, based
upon and subject to certain assumptions made, matters considered and limitations
on the review undertaken, as of the dates of such opinions, the consideration to
be received by the Gelman stockholders pursuant to the Merger Agreement was
fair, from a financial point of view, to the Gelman stockholders. The opinion of
Cleary Gull dated December 27, 1996 is included in the attached Proxy
Statement-Prospectus as Exhibit B and should be carefully read in its entirety
by all stockholders.
 
     If the Gelman stockholders approve and adopt the Merger Agreement, your
investment in Gelman will become an investment in Pall. Pall designs, engineers,
manufactures and markets an extensive range of filtration products and systems
worldwide. The Board of Directors of Gelman believes that the proposed
transaction offers a unique opportunity to combine two leading filtration
companies with strong market shares and customer relationships in their
respective markets into a combined company with the product base, financial
strength and global market reach to compete in the international marketplace for
filtration products. The Board of Directors of Gelman believes that there are
significant opportunities for each company to utilize the products, technology,
customer relationships and distribution channels of the other to further develop
market opportunities. In addition, there should be opportunities for the
combined company to achieve operating synergies relating to corporate overhead.
 
     THE BOARD OF DIRECTORS OF GELMAN HAS UNANIMOUSLY CONCLUDED THAT THE TERMS
OF THE MERGER AGREEMENT ARE FAIR TO AND IN THE BEST INTERESTS OF GELMAN'S
STOCKHOLDERS. ACCORDINGLY, THE BOARD HAS UNANIMOUSLY APPROVED THE MERGER
AGREEMENT AND RECOMMENDS THAT YOU VOTE FOR THE PROPOSAL TO APPROVE AND ADOPT THE
MERGER AGREEMENT.
 
     The accompanying Proxy Statement-Prospectus describes the Merger Agreement
and related proposed transactions more fully, and you are urged to give it your
careful consideration.
<PAGE>   3
 
     It is very important that your shares be represented at the Special
Meeting, whether or not you plan to attend and 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 the Special Meeting. A
postage-paid return envelope is enclosed for your convenience. Returning your
proxy card will not prevent you from voting your shares in person if you
subsequently choose to attend the Special Meeting.
 
     PLEASE DO NOT SEND ANY GELMAN STOCK CERTIFICATES AT THIS TIME. Immediately
after the Merger is consummated, you will be sent instructions for exchanging
your Gelman stock certificates for Pall stock certificates.
 
     Thank you for your consideration and continued support.
 
                                          Sincerely,

                                          /S/ Charles Gelman

                                          Charles Gelman
                                          Chairman and Chief Executive Officer
<PAGE>   4
 
                              GELMAN SCIENCES INC.
                             600 SOUTH WAGNER ROAD
                           ANN ARBOR, MICHIGAN 48103
                            ------------------------
 
                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS
                         TO BE HELD ON FEBRUARY 3, 1997
                            ------------------------
 
     A Special Meeting of Stockholders of Gelman Sciences Inc., a Michigan
corporation ("Gelman"), will be held at the offices of Pall Corporation located
at 25 Harbor Park Drive, Port Washington, New York, on Monday, February 3, 1997,
at 1:00 p.m., local time, for the following purposes:
 
          1. To consider and vote upon a proposal to approve and adopt the
     Agreement and Plan of Reorganization and Merger dated October 27, 1996,
     between Pall Corporation, a New York corporation, Pall Acquisition
     Corporation, a Michigan corporation which is a wholly-owned subsidiary of
     Pall, and Gelman; and
 
          2. To transact such other business related to the approval of the
     Merger Agreement as may properly come before the Special Meeting and any
     adjournment thereof.
 
     Only stockholders of record of Gelman common stock at the close of business
on December 19, 1996, will be entitled to notice of and to vote at the Special
Meeting and any adjournment or postponement thereof.
 
     Whether or not you plan to attend the Special Meeting, please complete,
date, sign and return the enclosed proxy card promptly. A return envelope is
enclosed for your convenience and requires no postage if mailed in the United
States. If you attend the Special Meeting and wish to vote your shares in
person, your doing so will effectively revoke any proxy which you previously
delivered.
 
                                          By Order of the Board of Directors,
 
                                          /S/ Edward J. Levitt

                                          Edward J. Levitt
                                          Secretary
 
Ann Arbor, Michigan
December 27, 1996
 
                            YOUR VOTE IS IMPORTANT.
            TO VOTE YOUR SHARES, PLEASE COMPLETE, DATE AND SIGN THE
            ENCLOSED PROXY CARD AND MAIL IT PROMPTLY IN THE ENCLOSED
               RETURN ENVELOPE WHETHER OR NOT YOU PLAN TO ATTEND
                              THE SPECIAL MEETING.
<PAGE>   5
 
                              GELMAN SCIENCES INC.
                                PROXY STATEMENT
                            ------------------------
 
                                PALL CORPORATION
                                   PROSPECTUS
 
     This Proxy Statement-Prospectus is being furnished to the holders of the
outstanding shares of common stock, par value $.10 per share (the "Gelman
Shares"), of Gelman Sciences Inc., a Michigan corporation ("Gelman"), in
connection with the solicitation of proxies by the Board of Directors of Gelman
for use at a Special Meeting of Stockholders of Gelman to be held at the offices
of Pall Corporation located at 25 Harbor Park Drive, Port Washington, New York,
on Monday, February 3, 1997, at 1:00 p.m., local time, and at any and all
adjournments or postponements thereof (the "Special Meeting"). The Special
Meeting has been called to consider a proposed merger (the "Merger") of Pall
Acquisition Corporation ("Sub"), a wholly-owned Michigan subsidiary of Pall
Corporation, a New York corporation ("Pall"), into Gelman pursuant to an
Agreement and Plan of Reorganization and Merger dated October 27, 1996 (the
"Merger Agreement") among Pall, Sub and Gelman. Consummation of the Merger is
subject to certain conditions, including the approval and adoption of the Merger
Agreement at the Special Meeting by the holders of a majority of the outstanding
Gelman Shares. Upon consummation of the Merger, Gelman would become a
wholly-owned subsidiary of Pall.
 
     Pursuant to the Merger Agreement, each outstanding Gelman Share would be
converted into the right to receive shares of the common stock, par value $.10
per share, of Pall ("Pall Shares"). Pall Shares are traded on the New York Stock
Exchange ("NYSE") under the symbol "PLL". The number of Pall Shares to be
received for each Gelman Share in the Merger (the "Exchange Ratio") will be
determined by a formula based on the "Average Trading Price" of a Pall Share.
The "Average Trading Price" means the average of the closing sales prices of a
Pall Share for NYSE composite transactions during the 30 NYSE trading days
preceding the third trading day before the Special Meeting. Based on the
scheduled meeting date of February 3, 1997, the period of 30 trading days began
on December 16, 1996, and will end on January 28, 1997. If the Average Trading
Price is between $25.29 and $27.96, Gelman shareholders will receive for each
Gelman Share a number of Pall Shares (between 1.1804 and 1.3047 Pall Shares)
having a value of $33.00 based on the Average Trading Price. If the Average
Trading Price is $27.96 or more, Gelman shareholders will receive 1.1804 Pall
Shares for each Gelman Share. If the Average Trading Price is $25.29 or less,
Gelman shareholders will receive 1.3047 Pall Shares for each Gelman Share. Cash
will be paid in lieu of fractional Pall Shares. The Gelman Board of Directors
will have the right to terminate the Merger Agreement if the Average Trading
Price is less than $21.00.
 
     On December 26, 1996, the closing sale price of a Pall Share for NYSE
composite transactions was $25.875, and the closing sale price of a Gelman Share
(symbol "GSC") for American Stock Exchange ("ASE") composite transactions was
$32.00.
 
     Pall has filed with the Securities and Exchange Commission (the
"Commission") a Registration Statement under the Securities Act of 1933 (the
"Registration Statement") with respect to the issuance of (i) up to 10,653,084
Pall Shares pursuant to the Merger and upon exercise after the Merger of certain
warrants to purchase Gelman Shares, (ii) options to purchase Pall Shares (the
"Pall Options") being offered in exchange for certain outstanding options to
purchase Gelman Shares, (iii) up to 652,725 Pall Shares issuable upon exercise
of the Pall Options, and (iv) Common Share Purchase Rights of Pall (the
"Rights"), which will be attached to and transferable only with the Pall Shares
referred to in clauses (i) and (iii). See "Description of Pall Shares -- Common
Share Purchase Rights." This Proxy Statement-Prospectus constitutes the
prospectus of Pall filed as part of the Registration Statement.
 
     THIS PROXY STATEMENT-PROSPECTUS IS DATED DECEMBER 27, 1996 AND, WITH THE
ACCOMPANYING FORM OF PROXY, IS FIRST BEING DISTRIBUTED TO STOCKHOLDERS OF GELMAN
ON OR ABOUT DECEMBER 30, 1996.
                            ------------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
   SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
     PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROXY STATEMENT-
      PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
      OFFENSE.
<PAGE>   6
 
     All information contained in this Proxy Statement-Prospectus with respect
to Gelman has been provided by Gelman, and all information contained in this
Proxy Statement-Prospectus with respect to Pall and Sub has been provided by
Pall.
 
                             AVAILABLE INFORMATION
 
     As permitted by the rules and regulations of the Commission, this Proxy
Statement-Prospectus omits certain information contained in the Registration
Statement. In addition, Pall and Gelman are each subject to the informational
and reporting 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. The Registration Statement, as well
as such reports, proxy statements and other information, can be inspected and
copied at the Commission's public reference facilities at Room 1024, Judiciary
Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549, and at the regional
offices of the Commission located at 7 World Trade Center, Room 1300, 13th
floor, New York, New York 10048, and at Citicorp Center, 500 West Madison
Street, Suite 1400, Chicago, Illinois 60661-2511. Copies of such material can
also be obtained by mail from the Public Reference Section of the Commission at
450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates, as well as
from the Commission's Website at http://www.sec.gov. In addition, such material
with respect to Pall is available for inspection at the library of the NYSE, 20
Broad Street, New York, New York, and such material with respect to Gelman is
available for inspection at the library of the ASE, 86 Trinity Place, New York,
New York.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The following documents previously filed with the Commission by Pall
(Commission File No. 1-4311) and Gelman (Commission File No. 1-7828) pursuant to
the Exchange Act are hereby incorporated by reference in this Proxy
Statement-Prospectus:
 
          (1) Pall's Annual Report on Form 10-K for the fiscal year ended August
     3, 1996, including Amendment No. 1 thereto dated October 30, 1996;
 
          (2) Pall's Quarterly Report on Form 10-Q for the quarterly period
     ended November 2, 1996.
 
          (3) The descriptions of the Pall Shares and the Rights contained in
     the Company's Registration Statements on Form 8-A, both dated September 10,
     1992, for the registration of the Pall Shares and the Rights pursuant to
     Section 12(b) of the Exchange Act, and any updates of such descriptions
     contained in any registration statement, report or amendment thereto of
     Pall hereafter filed under the Exchange Act;
 
          (4) Gelman's Annual Report on Form 10-K for the fiscal year ended July
     31, 1996; and
 
          (5) Gelman's Quarterly Report on Form 10-Q for the quarterly period
     ended October 31, 1996.
 
     All documents filed by Pall and Gelman pursuant to Sections 13(a), 13(c),
14 or 15(d) of the Exchange Act subsequent to the date hereof and prior to the
date of the Special Meeting shall be deemed to be incorporated by reference
herein and to be a part hereof from the respective dates of filing thereof. Any
statement contained in a document incorporated or deemed to be incorporated by
reference herein shall be deemed to be modified or superseded for purposes of
this Proxy Statement-Prospectus 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. All information appearing in this Proxy
Statement-Prospectus is qualified in its entirety by the information and
consolidated financial statements (including notes thereto) appearing in the
documents incorporated herein by reference, except to the extent set forth in
the immediately preceding statement.
 
     AS NOTED ABOVE, THIS PROXY STATEMENT-PROSPECTUS INCORPORATES DOCUMENTS BY
REFERENCE WHICH ARE NOT PRESENTED HEREIN OR DELIVERED HEREWITH. COPIES OF SUCH
DOCUMENTS (NOT INCLUDING EXHIBITS TO SUCH DOCUMENTS UNLESS SUCH EXHIBITS ARE
SPECIFICALLY INCORPORATED BY REFERENCE IN SUCH DOCUMENTS OR HEREIN) ARE
AVAILABLE
 
                                        2
<PAGE>   7
 
WITHOUT CHARGE TO ANY PERSON, INCLUDING ANY BENEFICIAL OWNER OF GELMAN SHARES,
TO WHOM THIS PROXY STATEMENT-PROSPECTUS IS DELIVERED UPON HIS OR HER WRITTEN OR
ORAL REQUEST TO THE FOLLOWING:
 
<TABLE>
<CAPTION>
               PALL DOCUMENTS                                GELMAN DOCUMENTS
    -------------------------------------          -------------------------------------
    <S>                                            <C>
    PALL CORPORATION                               GEORGE UVEGES
    INVESTOR COMMUNICATIONS MANAGER                CHIEF FINANCIAL OFFICER
    25 HARBOR PARK DRIVE                           GELMAN SCIENCES INC.
    PORT WASHINGTON, NY 11050-4630                 600 SOUTH WAGNER ROAD
    TELEPHONE: (800) 205-7255                      ANN ARBOR, MI 48103-9019
                                                   TELEPHONE: (313) 665-0651
</TABLE>
 
     IN ORDER TO ENSURE TIMELY DELIVERY OF DOCUMENTS PRIOR TO THE DATE OF THE
SPECIAL MEETING, ANY REQUEST FOR DOCUMENTS SHOULD BE MADE BY JANUARY 27, 1997.
 
    NO PERSON IS AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATION WITH RESPECT TO THE MATTERS DESCRIBED IN THIS PROXY
STATEMENT-PROSPECTUS OTHER THAN THOSE CONTAINED HEREIN OR IN THE DOCUMENTS
INCORPORATED BY REFERENCE HEREIN AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY PALL, GELMAN
OR ANY OTHER PERSON. THIS PROXY STATEMENT-PROSPECTUS DOES NOT CONSTITUTE AN
OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY SECURITIES IN ANY
JURISDICTION TO ANY PERSON TO WHOM IT IS NOT LAWFUL TO MAKE ANY SUCH OFFER OR
SOLICITATION IN SUCH JURISDICTION. NEITHER THE DELIVERY OF THIS PROXY
STATEMENT-PROSPECTUS NOR ANY DISTRIBUTION OF SECURITIES HEREUNDER SHALL, UNDER
ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE
ASSETS, PROPERTIES OR AFFAIRS OF PALL OR GELMAN SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED OR INCORPORATED BY REFERENCE HEREIN IS CORRECT AS OF
ANY TIME SUBSEQUENT TO THE DATE HEREOF OR THE DATE OF THE DOCUMENT THAT INCLUDES
THE INFORMATION INCORPORATED BY REFERENCE.
 
                                        3
<PAGE>   8
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                        PAGE
                                                                                        ----
<S>                                                                                     <C>
AVAILABLE INFORMATION.................................................................     2
INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.......................................     2
SUMMARY...............................................................................     6
MARKET PRICES FOR PALL SHARES AND GELMAN SHARES.......................................    17
THE SPECIAL MEETING...................................................................    17
     Record Date, Voting Rights, Voting at the Meeting................................    17
     Solicitation of Proxies..........................................................    18
     Voting of Proxies................................................................    18
THE MERGER............................................................................    19
     Background of the Merger.........................................................    19
     Gelman's Reasons for the Merger; Recommendation of Gelman's Board of Directors...    22
     Opinion of Gelman's Financial Advisor............................................    23
     Pall's Reasons for the Merger....................................................    28
     Regulatory Approvals.............................................................    28
     Accounting Treatment.............................................................    28
     No Appraisal Rights..............................................................    29
     Surrender of Gelman Share Certificates...........................................    29
     Resales of Pall Shares by Affiliates of Gelman...................................    29
OFFER TO EXCHANGE OPTIONS.............................................................    30
     Pall Options.....................................................................    30
     Exchange Agreements..............................................................    30
     Federal Income Tax Consequences..................................................    31
INTERESTS OF CERTAIN PERSONS IN THE MERGER............................................    33
     Employment Agreements and Related Matters........................................    33
     Indemnification..................................................................    33
     Stock Options and Warrants.......................................................    34
THE MERGER AGREEMENT..................................................................    36
     Effect of the Merger on Gelman Shares............................................    36
     Conditions to the Merger.........................................................    36
     Representations and Warranties...................................................    39
     Certain Covenants................................................................    39
     Additional Agreements............................................................    41
     Termination, Amendment and Waiver................................................    43
PRO FORMA FINANCIAL DATA..............................................................    44
CERTAIN TAX CONSEQUENCES..............................................................    50
     General..........................................................................    50
     Federal Income Tax Consequences of the Merger....................................    50
DESCRIPTION OF PALL SHARES............................................................    50
     Voting Rights....................................................................    51
     Classification of the Board......................................................    51
     Fair Price Provisions............................................................    51
     Common Share Purchase Rights.....................................................    52
</TABLE>
 
                                        4
<PAGE>   9
 
<TABLE>
<S>                                                                                     <C>
COMPARISON OF THE RIGHTS OF HOLDERS OF GELMAN SHARES AND HOLDERS OF PALL SHARES.......    53
     Shares...........................................................................    53
     Appointment and Removal of Directors.............................................    54
     Special Meetings.................................................................    54
     Shareholder Approvals............................................................    54
     Books and Records; Inspection; Information.......................................    55
     Dividends and Distributions......................................................    55
     Minority Shareholder Remedies....................................................    55
     Dissenters' Rights...............................................................    56
     Indemnification of Directors, Officers and Employees.............................    57
     Anti-Takeover Provisions.........................................................    58
STOCKHOLDER PROPOSALS.................................................................    60
LEGAL MATTERS.........................................................................    60
EXPERTS...............................................................................    60
EXHIBIT A -- Agreement and Plan of Reorganization and Merger..........................   A-1
EXHIBIT B -- Opinion of Cleary Gull Reiland & McDevitt Inc............................   B-1
EXHIBIT C -- Form of Exchange Agreement...............................................   C-1
</TABLE>
 
                                        5
<PAGE>   10
 
                                    SUMMARY
 
     The following is a summary of certain information contained in this Proxy
Statement-Prospectus. This summary does not contain a complete statement of all
material information relating to the Merger and the Merger Agreement and is
qualified in all respects by reference to the more detailed information
contained elsewhere in this Proxy Statement-Prospectus or in the documents
incorporated by reference herein. Gelman stockholders and holders of Gelman
options are urged to read and consider carefully all of the information
contained or incorporated by reference in this Proxy Statement-Prospectus,
including the Exhibits. All information herein gives effect to the two
three-for-two stock splits of Gelman Shares effected on December 28, 1993, and
August 12, 1994.
 
                                 THE COMPANIES
 
Pall.......................  Pall, a New York corporation organized in 1946, is
                             a leading worldwide supplier of fine filters,
                             mainly made by Pall using its high-quality filter
                             media, and other fluid clarification equipment for
                             the removal of solid, liquid and gaseous
                             contaminants from a wide variety of liquids and
                             gases. Pall's principal products are sold to the
                             aeropower, fluid processing and healthcare
                             industries. Pall supplies aeropower filtration
                             products to the commercial and military aircraft
                             market, including power generation plants and
                             manufacturers of aluminum, steel, paper,
                             automobiles, injection-molded parts and mobile
                             equipment such as trucks and earthmoving machinery.
                             These filtration products remove particulates and
                             water from hydraulic and lubrication fluids and
                             systems, thereby extending their useful lives,
                             minimizing waste for disposal and increasing
                             overall productivity. Pall's fluid processing
                             products are used to remove microscopic and larger
                             contaminants by producers of oil and gas,
                             electricity, chemicals, plastics, semiconductors,
                             photographic film, magnetic storage devices, thin
                             film rigid discs, ink jet printers, computer
                             terminals and disc drives. Pall's healthcare
                             filters protect patients receiving blood
                             transfusions and undergoing open-heart surgery,
                             organ transplants, intravenous feeding and
                             breathing therapy. These filters are used
                             extensively in hospitals and in blood centers to
                             protect from particulates, bacteria, and viral and
                             foreign leukocyte contamination. Manufacturers of
                             pharmaceuticals, biopharmaceuticals, blood
                             fractions, therapeutic biologicals and food and
                             beverages, as well as producers of diagnostic tests
                             and users of laboratory-scale filtration devices,
                             purchase Pall's filtration systems, validation
                             services and proprietary membranes.
 
                             Pall's business is described in greater detail in
                             its fiscal 1996 Annual Report to Shareholders, a
                             copy of which is being delivered with this Proxy
                             Statement-Prospectus but is not incorporated by
                             reference in this Proxy Statement-Prospectus.
                             Pall's principal executive offices are located at
                             2200 Northern Boulevard, East Hills, New York
                             11548; telephone (516) 484-5400.
 
Gelman.....................  Gelman, a Michigan corporation organized in 1959,
                             designs, manufactures and markets a broad line of
                             specialty microfiltration products for the
                             separation and purification of liquids and gases.
                             Gelman's core technologies are the manufacturing of
                             microporous membranes which serve as a barrier,
                             filter or separator of microscopic particles, and
                             the packaging and sealing of these membranes into
                             microfiltration products. Gelman's products include
                             syringe, capsule and cartridge filters, microporous
                             membranes and other microfiltration products.
                             Microfiltration
 
                                        6
<PAGE>   11
 
                             products with healthcare applications account for
                             over 60% of Gelman's sales. These products are sold
                             worldwide to scientific and industrial laboratories
                             and manufacturers of products used by
                             biotechnology, pharmaceutical and healthcare
                             companies for use in the research, development and
                             manufacturing of new drugs and vaccines and their
                             administration to patients. Gelman's management
                             believes that Gelman offers a greater variety of
                             membranes and microfiltration products in its
                             markets than any other manufacturer and that it has
                             built significant recognition among its customers,
                             particularly in scientific and industrial
                             laboratories. Nearly all of Gelman's
                             microfiltration products are disposable, and many
                             are used in high volume applications requiring
                             regular replacement.
 
                             Gelman's principal executive offices are located at
                             600 South Wagner Road, Ann Arbor, Michigan
                             48103-9019; telephone (313) 665-0651.
 
                              THE SPECIAL MEETING
 
Date, Time and Place.......  A special meeting of the stockholders of Gelman
                             will be held at the offices of Pall Corporation
                             located at 25 Harbor Park Drive, Port Washington,
                             New York, on Monday, February 3, 1997, at 1:00
                             p.m., local time (the "Special Meeting").
 
Purpose of the Meeting.....  At the Special Meeting, the holders of Gelman
                             Shares will consider and vote upon a proposal to
                             approve and adopt an Agreement and Plan of
                             Reorganization and Merger made on October 27, 1996,
                             by and among Pall, Sub and Gelman (the "Merger
                             Agreement"), a copy of which is attached as Exhibit
                             A to this Proxy Statement-Prospectus. As a result
                             of the Merger, Gelman would become a wholly-owned
                             subsidiary of Pall. Stockholders of Gelman will
                             also transact such other business related to the
                             approval of the Merger Agreement as may properly
                             come before the Special Meeting.
 
Record Date................  Only Gelman stockholders of record at the close of
                             business on December 19, 1996 (the "Record Date")
                             will be entitled to notice of and to vote at the
                             Special Meeting. On the Record Date, there were
                             8,070,010 Gelman Shares outstanding held by
                             approximately 1,100 holders of record. See "The
                             Special Meeting -- Record Date, Voting Rights,
                             Voting at the Meeting."
 
Required Vote..............  The Merger requires the affirmative vote of the
                             holders of a majority of the Gelman Shares
                             outstanding. As of the Record Date, directors and
                             executive officers of Gelman and their affiliates
                             beneficially owned approximately 15% of the
                             outstanding Gelman Shares, and they have all
                             advised Gelman that they intend to vote in favor of
                             approval and adoption of the Merger Agreement. See
                             "The Special Meeting -- Record Date, Voting Rights,
                             Voting at the Meeting."
 
Revocability of Proxies....  Any proxy given pursuant to this solicitation may
                             be revoked by (i) filing (including by telegram or
                             facsimile) with the Secretary of Gelman, before the
                             taking of the vote at the Special Meeting, a
                             written notice of revocation bearing a later date
                             than the date of the proxy, or a later-dated proxy
                             relating to the same shares, or (ii) attending the
                             Special Meeting and voting in person. See "The
                             Special Meeting -- Voting of Proxies."
 
                                        7
<PAGE>   12
 
No Appraisal Rights........  Under Michigan law, Gelman stockholders will not be
                             entitled to any appraisal rights in connection with
                             the Merger. See "The Merger -- No Appraisal
                             Rights."
 
                                   THE MERGER
 
Effective Time of the
Merger.....................  If the Merger Agreement is approved and adopted by
                             the requisite vote of Gelman stockholders, and the
                             other conditions to the Merger are satisfied or
                             (where permissible) waived, the Merger will be
                             consummated and become effective upon the filing of
                             a certificate of merger with the Department of
                             Commerce of the State of Michigan (the time of such
                             filing being the "Effective Time") in accordance
                             with the Business Corporation Act of the State of
                             Michigan. The Effective Time is expected to occur
                             as promptly as practicable after the Merger
                             Agreement is approved and adopted at the Special
                             Meeting.
 
Merger Terms...............  In the Merger, each holder of Gelman Shares will be
                             entitled to receive Pall Shares in the following
                             ratio (the "Exchange Ratio"): (i) if the "Average
                             Trading Price" of a Pall Share, as defined below,
                             is $27.96 or more, the Exchange Ratio will be
                             1.1804 Pall Shares for each Gelman Share, (ii) if
                             the Average Trading Price of a Pall Share is less
                             than $27.96 but more than $25.29, the Exchange
                             Ratio will be a number of Pall Shares for each
                             Gelman Share equal to $33.00 divided by the Average
                             Trading Price (i.e., Pall Shares having a value of
                             $33.00, based on the Average Trading Price); and
                             (iii) if the Average Trading Price of a Pall Share
                             is $25.29 or less, the Exchange Ratio will be
                             1.3047 Pall Shares for each Gelman Share. "Average
                             Trading Price" is defined as the average of the
                             closing sales prices of a Pall Share for New York
                             Stock Exchange ("NYSE") composite transactions
                             during the period of 30 "trading days" (a "trading
                             day" is a day on which the NYSE is open for
                             business) preceding the third trading day
                             immediately before the date of the Special Meeting.
                             The Board of Directors of Gelman has the right to
                             terminate the Merger Agreement if the Average
                             Trading Price is less than $21.00. Cash will be
                             paid in lieu of fractional Pall Shares, equal to
                             the product of the fractional share interest to
                             which a Gelman stockholder would otherwise be
                             entitled, multiplied by the closing sale price of a
                             Pall Share for NYSE composite transactions on the
                             last trading day immediately preceding the date of
                             the Effective Time.
 
Offer to Exchange
Options....................  Stock options held by employees and directors of
                             Gelman to purchase an aggregate of 500,288 Gelman
                             Shares were outstanding on the Record Date (the
                             "Gelman Options"). Pursuant to the Merger
                             Agreement, Pall is offering to the holders of
                             Gelman Options, contingent upon the effectiveness
                             of the Merger, the right to exchange each Gelman
                             Option for an option issued by Pall (a "Pall
                             Option") to purchase a number of Pall Shares equal
                             to the number of Gelman Shares which could be
                             acquired upon exercise of such Gelman Option
                             multiplied by the Exchange Ratio, at an exercise
                             price per Pall Share equal to the per share
                             exercise price of such Gelman Option divided by the
                             Exchange Ratio and rounded to the nearest whole
                             cent. Prior to the approval and adoption of the
                             Merger Agreement, holders of Gelman Options will be
                             sent an Exchange Agreement in substantially the
                             form attached as Exhibit C to this Proxy
                             Statement-Prospectus pursuant to which Gelman will
                             seek the consent of each such holder, contingent
                             upon the consum-
 
                                        8
<PAGE>   13
 
                             mation of the Merger, to the exchange of Gelman
                             Options for Pall Options on substantially the same
                             terms. Each holder of Gelman Options desiring so to
                             exchange must sign and return an Exchange Agreement
                             to Gelman. It is a condition to Pall's obligation
                             to consummate the Merger that the number of Gelman
                             Shares covered by Gelman Options which are not
                             exercised or converted into Pall Options before the
                             Effective Time shall not exceed 128,458 Gelman
                             Shares. Upon consummation of the Merger, holders of
                             Gelman Options who have executed Exchange
                             Agreements must return the executed original of
                             their Gelman Option agreements to Pall in order to
                             receive a Pall Option, the form of which is
                             Schedule B to the Exchange Agreement. An exchange
                             of a Gelman Option for a Pall Option will not be a
                             taxable event. See "Offer to Exchange Options" and
                             "The Merger Agreement -- Additional Agreements."
 
Gelman's Reasons for the
  Merger; Recommendation of
  the Board of Directors of
  Gelman...................  On October 27, 1996, the Board of Directors of
                             Gelman unanimously approved the Merger Agreement
                             and the Merger as being in the best interests of
                             Gelman and the Gelman stockholders and adopted a
                             resolution recommending that Gelman stockholders
                             vote in favor of approval and adoption of the
                             Merger Agreement. In approving the Merger Agreement
                             and making such recommendation, Gelman's Board of
                             Directors considered a number of factors, including
                             but not limited to the following: (i) the liquidity
                             of the Pall Shares to be received by Gelman
                             stockholders in the Merger; (ii) the lack of price
                             volatility of the Pall Shares; (iii) the impact
                             Pall's capital resources will have on Gelman's
                             research and product development activities; (iv)
                             the strong sales position of Pall outside the U.S.
                             and the expectation that Pall will be able to
                             expand overseas sales of Gelman's products; (v) the
                             consolidation of the filtration industry, and the
                             greater likelihood that companies with full product
                             lines will prosper; (vi) the probability that the
                             Merger would be consummated; (vii) the fact that
                             the Merger Agreement required Pall to pay a $10.0
                             million fee if the waiting period under the
                             Hart-Scott-Rodino Antitrust Improvements Act of
                             1976 (the "HSR Act") had not expired or been
                             terminated on or prior to October 15, 1997; and
                             (viii) the fact that the Merger Agreement permits
                             the Gelman Board of Directors to terminate the
                             Merger Agreement if the Average Trading Price of a
                             Pall Share is less than $21.00. See "The
                             Merger -- Gelman's Reasons for the Merger;
                             Recommendation of Gelman's Board of Directors."
 
Opinion of Gelman's
Financial Advisor..........  Cleary Gull Reiland & McDevitt Inc. ("Cleary
                             Gull"), the financial advisor to Gelman, has
                             delivered to the Gelman Board of Directors its
                             written fairness opinions dated October 27, 1996,
                             and December 27, 1996, to the effect that, as of
                             the dates of such opinions, the consideration to be
                             received by the Gelman stockholders pursuant to the
                             Merger Agreement was fair, from a financial point
                             of view, to the Gelman stockholders. The full text
                             of the December 27, 1996 opinion of Cleary Gull,
                             which sets forth the assumptions made, procedures
                             followed, matters considered and limitations on the
                             review undertaken, is attached as Exhibit B to this
                             Proxy Statement-Prospectus. STOCKHOLDERS
 
                                        9
<PAGE>   14
 
                             OF GELMAN ARE URGED TO READ SUCH OPINION CAREFULLY
                             AND IN ITS ENTIRETY. See "The Merger -- Opinion of
                             Gelman's Financial Advisor."
 
Pall's Reasons for the
Merger.....................  Pall desires to expand into the laboratory area,
                             which Pall management has targeted as Pall's fourth
                             major product area. Gelman has an established
                             presence in the laboratory product area for
                             filtration and separation products, including small
                             volume filters for use in research, sample
                             preparation in clinical and industrial
                             laboratories, new drug development, environmental
                             testing and other applications, which complement
                             and broaden Pall's smaller and more specialized
                             laboratory product area. Pall believes that
                             Gelman's strengths are complementary to Pall's and
                             not overlapping and that Pall will realize
                             substantial efficiencies and significant cost
                             savings from the Merger. Gelman's distribution
                             strength to laboratories will also enhance
                             distribution of Pall's membranes for diagnostics
                             and molecular biology. Management expects Pall's
                             global distribution system to hospitals and blood
                             centers to broaden sales of Gelman's medical
                             filtration products, which are distinct from Pall's
                             filtration products. Gelman's process filter
                             products fit well into Pall's product area. See
                             "The Merger -- Pall's Reasons for the Merger."
 
Interests of Certain
Persons in the Merger......  In considering the recommendation of Gelman's Board
                             of Directors with respect to the Merger Agreement,
                             Gelman stockholders should be aware that certain
                             executive officers and directors of Gelman have
                             interests in the Merger that are in addition to the
                             interests of Gelman stockholders. These interests
                             include the following: (i) each of the executive
                             officers and directors of Gelman currently holds
                             Gelman Options, which may be exchanged for Pall
                             Options, or holds warrants to purchase Gelman
                             Shares which, by their terms, will be converted to
                             warrants to purchase Pall Shares, adjusted to give
                             effect to the Merger; (ii) the consummation of the
                             Merger will accelerate the vesting of Gelman
                             Options to acquire an aggregate of 151,625 Gelman
                             Shares held by certain employees of Gelman,
                             including Charles Gelman, Chairman and Chief
                             Executive Officer, and Kim A. Davis, President and
                             Chief Operating Officer, at exercise prices ranging
                             from $17.75 to $27.00 per Gelman Share, and (iii)
                             in light of pre-existing employment agreements with
                             Gelman, upon the consummation of the Merger Messrs.
                             Gelman and Davis will receive "change of control"
                             payments and will continue as employees of Gelman
                             under employment agreements (with reduced
                             responsibilities for Mr. Gelman) for terms of five
                             years and not less than three years, respectively.
                             The Board of Directors of Gelman was aware of these
                             interests and took them into account in approving
                             the Merger Agreement. See "Interests of Certain
                             Persons in the Merger."
 
Surrender of Gelman Share
  Certificates.............  If the Merger is consummated, a letter of
                             transmittal will be mailed or delivered to each
                             Gelman stockholder of record promptly after the
                             Effective Time. After receipt of such letter of
                             transmittal, each holder of certificates formerly
                             representing Gelman Shares should surrender such
                             certificates pursuant to and in accordance with the
                             instructions in such letter of transmittal, and
                             each holder will receive in exchange therefor
                             certificates evidencing the whole number of Pall
                             Shares to which such
 
                                       10
<PAGE>   15
 
                             holder is entitled and cash in lieu of a fractional
                             Pall Share. Such letter of transmittal will be
                             accompanied by instructions specifying other
                             details of the exchange. GELMAN STOCKHOLDERS SHOULD
                             NOT SEND IN THEIR SHARE CERTIFICATES UNTIL THEY
                             RECEIVE A LETTER OF TRANSMITTAL. See "The Merger --
                             Surrender of Gelman Share Certificates."
 
Conditions to the Merger;
  Termination..............  The obligations of Pall and Gelman to effect the
                             Merger are subject to the satisfaction or waiver of
                             certain conditions set forth in the Merger
                             Agreement, including the approval and adoption of
                             the Merger Agreement by the holders of a majority
                             of the outstanding Gelman Shares. The Merger
                             Agreement may be terminated by mutual consent of
                             Pall and Gelman at any time prior to the Merger,
                             whether before or after approval and adoption of
                             the Merger Agreement by the stockholders of Gelman.
                             The Merger Agreement may be terminated by Gelman
                             if, among other things, (i) the Merger is not
                             completed by October 15, 1997, other than on
                             account of delay or default on the part of Gelman,
                             or (ii) the Board of Directors of Gelman determines
                             in good faith that an "Acquisition Transaction"
                             other than the Merger would be more favorable to
                             Gelman's stockholders from a financial point of
                             view than the Merger, the Board concludes in good
                             faith that termination of the Merger Agreement and
                             entering into an agreement for such Acquisition
                             Transaction is necessary in order for the Board to
                             act in a manner consistent with its fiduciary
                             obligations under applicable law, and Gelman pays
                             Pall a $5.0 million termination fee, or (iii) the
                             Gelman stockholders do not vote to approve and
                             adopt the Merger Agreement, or (iv) the Average
                             Trading Price is less than $21.00. The Merger
                             Agreement may be terminated by Pall if, among other
                             things, (i) the Merger is not completed by October
                             15, 1997, other than on account of delay or default
                             on the part of Pall, or (ii) the Gelman
                             stockholders do not vote to approve and adopt the
                             Merger Agreement. See "The Merger
                             Agreement -- Conditions to the Merger" and
                             "-- Termination, Amendment and Waiver."
 
Certain U.S. Federal Income
Tax Consequences...........  It is expected that the Merger will qualify as a
                             tax-free reorganization for U.S. federal income tax
                             purposes. Accordingly, subject to certain
                             exceptions, no gain or loss should be recognized by
                             Gelman stockholders for U.S. federal income tax
                             purposes upon the conversion of Gelman Shares into
                             Pall Shares by reason of the Merger (except to the
                             very limited extent such holders receive cash in
                             lieu of fractional Pall Shares). Consummation of
                             the Merger is conditioned upon Gelman's receipt of
                             a satisfactory opinion from its counsel, Godfrey &
                             Kahn, S.C., to the effect, generally, that the
                             Merger will qualify as a tax-free reorganization
                             for U.S. federal income tax purposes. Gelman
                             stockholders are urged to consult their own tax
                             advisors as to the specific tax consequences to
                             them of the Merger. See "Certain Tax Consequences."
                             The tax consequences to the holders of Gelman
                             Options of exchanging them for Pall Options are
                             described under "Offer to Exchange
                             Options -- Federal Income Tax Consequences."
 
                                       11
<PAGE>   16
 
Accounting Treatment.......  The Merger is intended to qualify as a pooling of
                             interests for accounting and financial reporting
                             purposes. See "The Merger -- Accounting Treatment."
                             It is a condition to Pall's obligation to effect
                             the Merger that it receive an opinion from Coopers
                             & Lybrand L.L.P., Gelman's independent public
                             accountants, that neither Gelman nor any of its
                             affiliates has taken or agreed to take any action
                             that would affect the ability of Pall to account
                             for the Merger as a pooling of interests. See "The
                             Merger Agreement -- Conditions to the Merger."
 
Regulatory Matters.........  Pall and Gelman filed pre-merger notification and
                             report forms with the Federal Trade Commission (the
                             "FTC") and the Department of Justice pursuant to
                             the HSR Act, and the required waiting period
                             expired on December 13, 1996. No other material
                             federal or state regulatory requirements remain to
                             be complied with, and no other federal or state
                             regulatory approval must be obtained, in connection
                             with the Merger. See "The Merger -- Regulatory
                             Approvals."
 
Comparison of Stockholder
  Rights...................  Differences between the corporation laws of
                             Michigan (where Gelman is incorporated) and New
                             York (where Pall is incorporated), and between the
                             articles of incorporation and the by-laws of Gelman
                             (the "Gelman Articles" and the "Gelman By-Laws",
                             respectively) and the certificate of incorporation
                             and the by-laws of Pall (the "Pall Certificate" and
                             the "Pall By-Laws", respectively), will result in
                             several significant changes in the rights of
                             stockholders of Gelman by reason of the Merger. See
                             "Comparison of the Rights of Holders of Gelman
                             Shares and Holders of Pall Shares" for a discussion
                             of these changes.
 
                                       12
<PAGE>   17
 
                  SUMMARY PRO FORMA FINANCIAL AND MARKET DATA
 
     The following tables present selected data for Pall and Gelman on an
historical basis, for Pall and Gelman on a pro forma basis assuming the Merger
had been effective during the periods presented, and for Gelman on a pro forma
equivalent share basis. The pro forma equivalent data for Gelman Shares give
effect to the exchange of 1.2394 Pall Shares for each outstanding Gelman Share
in the Merger (the "Pro Forma Exchange Ratio"), which is the Exchange Ratio that
would apply if the Average Trading Price were $26.625, the midpoint between the
range of $25.29 and $27.96 in the Exchange Ratio formula.
 
     The Merger will be accounted for under the pooling-of-interests accounting
method and the pro forma Pall data are derived in accordance with such method.
The following information is based upon the historical financial statements of
Pall and Gelman and the related notes incorporated by reference into this Proxy
Statement-Prospectus, and upon the pro forma financial statements appearing
elsewhere herein. This information should be read in conjunction with such
historical and pro forma financial statements and the related notes thereto.
This information is not necessarily indicative of the results of the future
operations of Pall after the Merger or the actual results that would have
occurred had the Merger been consummated prior to the periods indicated.
 
<TABLE>
        <S>                                                                <C>
        Pro forma results of operations (in thousands):
          Net sales:
             Quarter ended November 2, 1996..............................  $  235,791
             Quarter ended October 28, 1995..............................     218,885
             Fiscal 1996.................................................   1,072,433
             Fiscal 1995.................................................     926,326
             Fiscal 1994.................................................     795,811
          Net earnings:
             Quarter ended November 2, 1996..............................      17,284
             Quarter ended October 28, 1995..............................      19,674
             Fiscal 1996.................................................     143,115
             Fiscal 1995.................................................     125,789
             Fiscal 1994.................................................     104,329
        Pro forma financial position at November 2, 1996 (in thousands):
          Total assets...................................................   1,266,808
          Long-term debt, net of current portion.........................      54,813
          Shareholders' equity...........................................     829,322
</TABLE>
 
                                       13
<PAGE>   18
 
<TABLE>
<CAPTION>
                                                                                 PRO FORMA       GELMAN
                                                      PALL          GELMAN       PALL AND      PRO FORMA
                                                   HISTORICAL     HISTORICAL      GELMAN       EQUIVALENT
                                                   ----------     ----------     ---------     ----------
<S>                                                <C>            <C>            <C>           <C>
Book value per share(1):
  November 2, 1996...............................    $ 6.48         $ 7.85         $6.59         $ 8.17
  August 3, 1996.................................      6.37           8.15          6.51           8.07
Cash dividends per share(2):
  Quarter ended November 2, 1996.................      0.12             --          0.11           0.14
  Quarter ended October 28, 1995.................      0.11             --          0.10           0.12
  Fiscal 1996....................................      0.47             --          0.43           0.53
  Fiscal 1995....................................      0.41             --          0.38           0.47
  Fiscal 1994....................................      0.36             --          0.33           0.41
Net income per share before extraordinary items
  and cumulative effect of an accounting
  change(3):
  Quarter ended November 2, 1996.................      0.18          (0.36)         0.14           0.17
  Quarter ended October 28, 1995.................      0.16           0.24          0.16           0.20
  Fiscal 1996....................................      1.21           0.53          1.14           1.41
  Fiscal 1995....................................      1.04           0.92          1.01           1.25
  Fiscal 1994....................................      0.86           0.78          0.84           1.04
</TABLE>
 
- ---------------
(1) Based on actual and pro forma shares outstanding.
(2) Based on actual dividends declared by Pall and actual and pro forma shares
    outstanding at time of declaration.
(3) Based on average actual and pro forma shares and equivalent shares
    outstanding for each period.
 
     The following table sets forth the closing sales prices of a Pall Share for
NYSE composite transactions, and the closing sales prices of a Gelman Share for
ASE composite transactions and on a Gelman Share equivalent basis at an Exchange
Ratio calculated in accordance with the Merger Agreement, on October 25, 1996,
the last trading day prior to the public announcement of the general terms of
the proposed Merger, and on December 26, 1996:
 
<TABLE>
<CAPTION>
                                                                                         GELMAN
                                                                PALL       GELMAN        SHARE
                                                                SHARE       SHARE      EQUIVALENT
                                                               -------     -------     ----------
<S>                                                            <C>         <C>         <C>
Closing Sales Prices:
  October 25, 1996...........................................  $26.375     $29.875       $33.00
  December 26, 1996..........................................  $25.875     $ 32.00       $33.00
</TABLE>
 
                                       14
<PAGE>   19
 
                         SELECTED FINANCIAL INFORMATION
 
     Set forth below is selected historical financial information of Pall and
Gelman. This information is based upon the consolidated financial statements of
Pall and Gelman which are incorporated by reference in this Proxy
Statement-Prospectus. All of the following information should be read in
conjunction with such historical financial statements and the notes thereto.
 
                                PALL CORPORATION
 
<TABLE>
<CAPTION>
                                                               FISCAL YEAR ENDED                           QUARTER ENDED
                                           ---------------------------------------------------------  ------------------------
                                           AUGUST 1,   JULY 31,   JULY 30,    JULY 29,    AUGUST 3,   OCTOBER 28,  NOVEMBER 2,
                                             1992        1993       1994        1995         1996        1995         1996
                                           ---------   --------   --------   ----------   ----------  -----------  -----------
                                                                  (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                        <C>         <C>        <C>        <C>          <C>         <C>          <C>
STATEMENT OF EARNINGS DATA:
Net sales................................  $685,068    $687,222   $700,848     $822,823     $960,376    $191,550     $207,456
Cost of sales............................   262,076     249,629    257,624      305,287      372,864      75,554       82,983
Selling, general and administrative
  expenses...............................   253,030     262,598    261,289      301,686      338,726      78,551       83,362
Research and development.................    34,787      40,036     41,283       45,142       47,514      10,928       11,680
Interest expense, net....................     5,284       3,970      1,858        3,004        3,418         791          630
Restructuring and other charges..........     3,690 (1)   26,710(3)    3,696(4)         --         --         --           --
                                           ----------  ---------- --------     --------     --------  ----------   ----------
Total costs and expenses.................   558,867     582,943    565,750      655,119      762,522     165,824      178,655
Earnings before income taxes and
  cumulative effect of an accounting
  change.................................   126,201     104,279    135,098      167,704      197,854      25,726       28,801
Income taxes.............................   (35,968)    (25,967)   (36,176)     (48,488)     (59,356)     (7,974)      (8,641) 
                                           ----------  ---------- --------     --------     --------  ----------   ----------
Earnings before cumulative effect of an
  accounting change......................    90,233      78,312     98,922      119,216      138,498      17,752       20,160
Cumulative effect of an accounting
  change.................................     2,475 (2)       --        --         (780)(5)         --         --          --
Net earnings.............................  $ 92,708    $ 78,312   $ 98,922     $118,436     $138,498    $ 17,752     $ 20,160
                                           ==========  ========== ========     ========     ========  ==========   ==========
PER SHARE DATA:
Earnings before cumulative effect of an
  accounting change......................     $0.77       $0.68      $0.86        $1.04        $1.21       $0.16        $0.18
Cumulative effect of an accounting
  change.................................      0.02          --         --        (0.01)          --          --           --
                                           ----------  ---------- --------     --------     --------  ----------   ----------
Net earnings.............................     $0.79       $0.68      $0.86        $1.03        $1.21       $0.16        $0.18
                                           ==========  ========== ========     ========     ========  ==========   ==========
Average number of shares outstanding.....   116,928     115,856    115,678      115,184      114,839     114,446      115,045
BALANCE SHEET DATA (AT THE END OF EACH
  PERIOD):
Working capital..........................  $223,333    $192,528   $213,586   $  237,034   $  250,984  $  211,020   $  255,182
Total assets.............................   912,876     902,273    959,579    1,074,922    1,184,958   1,069,115    1,158,699
Long-term debt, including current
  portion................................    69,390      41,456     56,916       78,308       63,875      74,245       63,364
Stockholders' equity.....................   545,595     542,878    587,206      651,799      732,300     653,361      745,522
</TABLE>
 
- ---------------
(1) Represents a charge from the settlement of certain promissory notes received
    in connection with the sale of the air dryer business in a leveraged buyout
    reported in fiscal 1988.
(2) Represents an increase in earnings as a result of adopting Financial
    Accounting Standards Board Statement No. 109 (Accounting for Income Taxes)
    in the first quarter of fiscal 1992.
(3) Represents principally the cost of downsizing and further integrating the
    military portion of the Aeropower business with the Industrial Fluid Power
    business.
(4) Represents principally the cost of restructuring the German operations and
    writing off a bad debt in its Aerospace operations.
(5) Represents a decrease in earnings as a result of adopting Financial
    Accounting Standards Board Statement No. 112 (Employers' Accounting for
    Post-employment Benefits) in the first quarter of fiscal 1995.
 
                                       15
<PAGE>   20
 
                              GELMAN SCIENCES INC.
 
<TABLE>
<CAPTION>
                                                                                                            QUARTER ENDED
                                                            FISCAL YEAR ENDED JULY 31,                       OCTOBER 31,
                                             ---------------------------------------------------------    ------------------
                                              1992         1993         1994        1995        1996       1995       1996
                                             -------      -------      -------    --------    --------    -------    -------
                                                                  (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                          <C>          <C>          <C>        <C>         <C>         <C>        <C>
STATEMENT OF EARNINGS DATA:
Net sales.................................   $81,460      $86,209      $94,963    $103,503    $112,057    $27,335    $28,335
Cost of sales.............................    42,961       43,664       47,253      50,070      56,864     13,493     15,265
Selling, general and administrative
  expenses................................    28,750       31,125       33,607      36,634      39,645      9,287     10,486
Research and development..................     3,242        4,139        4,877       5,498       6,258      1,491      1,458
Interest expense, net.....................     2,590        2,006        1,689       1,314         607        154        128
Merger-related expenses...................        --           --           --          --          --         --      3,911
Pollution-related expense.................     4,988(1)       543           --          --       2,800         --         --
                                             -------      -------      -------    --------    --------    -------    -------
Total costs and expenses..................    82,531       81,477       87,426      93,516     106,174     24,425     31,248
(Loss) earnings before income taxes and
  extraordinary loss......................    (1,071)       4,732        7,537       9,987       5,883      2,910     (2,913)
Income tax (provision) benefit............       212       (2,030)      (2,600)     (3,365)     (1,547)      (988)        37
                                             -------      -------      -------    --------    --------    -------    -------
(Loss) earnings before extraordinary
  loss....................................      (859)       2,702        4,937       6,622       4,336      1,922     (2,876)
Extraordinary loss........................      (352)          --         (183)         --          --         --         --
                                             -------      -------      -------    --------    --------    -------    -------
Net (loss) earnings.......................   $(1,211)     $ 2,702      $ 4,754    $  6,622    $  4,336    $ 1,922    $(2,876)
                                             =======      =======      =======    ========    ========    =======    =======
PER SHARE DATA:
(Loss) earnings before extraordinary
  loss....................................    $(0.15)       $0.47        $0.78       $0.92       $0.53      $0.24     $(0.36)
Extraordinary loss........................     (0.06)          --        (0.03)         --          --         --         --
                                             -------      -------      -------    --------    --------    -------    -------
Net (loss) earnings.......................    $(0.21)       $0.47(2)     $0.75       $0.92       $0.53      $0.24     $(0.36)
                                             =======      =======      =======    ========    ========    =======    =======
Average number of common shares and common
  share equivalents outstanding(3)........     5,662        5,751        6,307       7,235       8,255      8,145      7,974
BALANCE SHEET DATA (AT THE END OF EACH
  PERIOD):
Working capital...........................   $ 8,547      $20,882      $25,404    $ 33,653    $ 39,759    $34,218    $37,964
Total assets..............................    61,530       63,495       71,687      81,781      88,220     82,401     86,372
Long-term debt, including current
  portion.................................    25,624       25,269       25,198       7,385       7,867      6,885      7,968
Stockholders' equity......................    19,651       22,256       30,435      58,773      64,688     60,903     63,051
</TABLE>
 
- ---------------
(1) Includes a $4.0 million charge for settlement of environmental lawsuits and
    costs of a remediation plan initiated in fiscal 1992 as part of such
    settlement.
 
(2) Fully diluted earnings per share for fiscal 1993 were $.45 based on the
    weighted average number of common and common equivalent shares outstanding
    of 5,952,710. The computation for fully diluted earnings per share was equal
    to primary earnings per share for fiscal 1992, 1994, 1995 and 1996.
 
(3) Includes common stock equivalents (stock options and warrants) outstanding
    during the period, except for the quarter ended October 31, 1996 and the
    fiscal year ended July 31, 1992, where the inclusion of common stock
    equivalents would be anti-dilutive.
 
                                       16
<PAGE>   21
 
                MARKET PRICES FOR PALL SHARES AND GELMAN SHARES
 
     Pall Shares are traded on the NYSE (under the symbol "PLL") and the London
Stock Exchange. Gelman Shares are traded on the ASE (under the symbol "GSC").
The following table sets forth, for the calendar quarters indicated, the high
and low sales prices of a Pall Share for NYSE composite transactions, and the
high and low sales prices of a Gelman Share for ASE composite transactions:
 
<TABLE>
<CAPTION>
                                                                                   GELMAN
                                                               PALL SHARES         SHARES
                                                               ------------     ------------
                          CALENDAR YEAR                        HIGH     LOW     HIGH     LOW
    ---------------------------------------------------------  ----     ---     ----     ---
    <S>                                                        <C>      <C>     <C>      <C>
    1994:
      Fourth Quarter.........................................  $19  3/4 $16 5/8 $15  7/8 $12 1/2
    1995:
      First Quarter..........................................   21  3/4  18 3/8  17  3/8  11 5/8
      Second Quarter.........................................   24       20 3/8  19  5/8  16 3/4
      Third Quarter..........................................   23  7/8  20 1/8  22       18 5/8
      Fourth Quarter.........................................   27  7/8  21 7/8  25  1/4  20 7/8
    1996:
      First Quarter..........................................   29  3/8  23 1/4  26  1/2  20 1/2
      Second Quarter.........................................   29  1/4  22 7/8  27  1/4  21 3/4
      Third Quarter..........................................   28  1/4  19 5/8  30  1/2  19
      Fourth Quarter (through December 26, 1996).............   28       24 1/2  32  3/8  26
</TABLE>
 
     On December 26, 1996, the closing sales prices of a Pall Share and a Gelman
Share were $25 7/8 and $32, respectively.
 
                              THE SPECIAL MEETING
 
     This Proxy Statement-Prospectus is being furnished to Gelman stockholders
in connection with the solicitation of proxies by the Board of Directors of
Gelman for use at the Special Meeting of Stockholders to be held on Monday,
February 3, 1997, at the offices of Pall located at 25 Harbor Park Drive, Port
Washington, New York, commencing at 1:00 p.m., local time, and at any
adjournment or postponement thereof.
 
     At the Special Meeting, Gelman stockholders will consider and vote on:
 
          (1) A proposal to approve and adopt the Merger Agreement; and
 
          (2) Such other business related to the approval of the Merger
     Agreement as may properly come before the Special Meeting.
 
RECORD DATE, VOTING RIGHTS, VOTING AT THE MEETING
 
     The Board of Directors of Gelman has fixed December 19, 1996, as the Record
Date for determination of Gelman stockholders entitled to notice of and to vote
at the Special Meeting. Each holder of record of Gelman Shares on the Record
Date is entitled to cast one vote per share, in person or by a properly executed
proxy, at the Special Meeting. As of the Record Date, there were 8,070,010
Gelman Shares outstanding and entitled to vote which were held by approximately
1,100 holders of record.
 
     Pursuant to the Gelman Articles and the Gelman By-Laws and applicable law,
the affirmative vote of the holders of a majority of the Gelman Shares
outstanding is required to approve and adopt the Merger Agreement. Thus, the
failure of a stockholder to vote, or a vote to abstain, will have the same legal
effect as a vote against the approval and adoption of the Merger Agreement. As
of the Record Date, the directors and executive officers of Gelman and their
affiliates beneficially owned approximately 15% of the outstanding Gelman Shares
and each such person has advised Gelman that he or she intends to vote in favor
of the Merger Agreement.
 
                                       17
<PAGE>   22
 
     Gelman Shares held of record by a broker which are present at the Special
Meeting in person or by proxy will be counted for purposes of determining a
quorum. However, brokers who hold Gelman Shares as nominees will not have
discretionary authority to vote such shares for or against approval and adoption
of the Merger Agreement, in the absence of instructions from the beneficial
owners. Votes which are not cast for this reason ("broker non-votes") will not
be counted in favor of the Merger Agreement. Since the approval and adoption of
the Merger Agreement requires the affirmative vote of a majority of the
outstanding Gelman Shares, broker non-votes will have the same effect as votes
against such approval and adoption.
 
SOLICITATION OF PROXIES
 
     The expenses of the solicitation of proxies for the Special Meeting will be
borne by Gelman, other than the cost of printing, filing and distributing this
Proxy Statement-Prospectus and the forms of proxy, which will be borne by Pall.
In addition to solicitation by mail, proxies may be solicited by directors,
officers and employees of Gelman in person or by telephone, telegram or other
means of communication. These persons will receive no additional compensation
for solicitation of proxies, but may be reimbursed for reasonable out-of-pocket
expenses in connection with such solicitation. Arrangements will also be made by
Gelman with custodians, nominees and fiduciaries for forwarding of proxy
solicitation materials to beneficial owners of shares held of record by such
custodians, nominees and fiduciaries, and Gelman will reimburse such custodians,
nominees and fiduciaries for reasonable expenses incurred in connection
therewith.
 
VOTING OF PROXIES
 
     Gelman Shares represented at the Special Meeting by properly executed,
delivered and unrevoked proxies will be voted at such meeting in accordance with
the instructions indicated in such proxies. If no instructions are indicated,
such proxies will be voted FOR approval and adoption of the Merger Agreement.
 
     If any other matters are properly presented at the Special Meeting for
consideration, including, among other things, consideration of a motion to
adjourn such meeting to another time or place (including, without limitation,
for the purpose of soliciting additional proxies), the persons named in the
enclosed form of proxy, and acting thereunder, will have discretion to vote on
such matters in accordance with their best judgment (unless authorization to use
such discretion is withheld). Gelman is not aware of any other matters expected
to be presented at the Special Meeting.
 
     A stockholder who has given a proxy pursuant to this solicitation may
revoke it at any time before it is exercised at the Special Meeting. Proxies may
be revoked by (i) filing with the Secretary of Gelman (including by telegram or
facsimile), before the taking of the vote at the Special Meeting, a written
notice of revocation bearing a later date than the date of the proxy or by
giving notice of revocation in open meeting, (ii) duly executing a later-dated
proxy relating to the same shares and delivering it (including by telegram or
facsimile) to the Secretary of Gelman before the taking of the vote at the
relevant meeting, or (iii) attending the Special Meeting and voting in person.
In order to vote in person at the Special Meeting, Gelman stockholders must
attend the meeting and cast their votes in accordance with the voting procedures
established for such meeting. Attendance at the Special Meeting will not in and
of itself constitute a revocation of a proxy. Any written notice of revocation
or subsequent proxy must be sent to: Gelman Sciences Inc., 600 South Wagner
Road, Ann Arbor, Michigan 48103-9019, fax (313) 913-6114, Attention: Secretary.
 
                                       18
<PAGE>   23
 
                                   THE MERGER
 
BACKGROUND OF THE MERGER
 
     The following is a summary of the events leading up to the execution of the
Merger Agreement.
 
     In October 1995, senior management of Gelman met with representatives of
Cleary Gull to discuss various alternatives to enhance stockholder value,
including the possibility of an alliance with another company. Over the next
several months, Charles Gelman, Chairman and Chief Executive Officer of Gelman,
and Kim A. Davis, President and Chief Operating Officer of Gelman, discussed
with Cleary Gull strategic alternatives available to Gelman, valuation issues,
possible forms of business combinations and the types of companies which might
be interested in a strategic alliance with Gelman. In May 1996, the Gelman Board
of Directors appointed a Strategic Planning Committee of directors, consisting
of Messrs. Gelman, Davis, Charles Newman and John A. Geishecker, Jr. to evaluate
alternatives to enhance long-term stockholder value, including a possible
alliance with another company. Beginning in late May, Cleary Gull identified a
group of companies that were likely to have an interest in a business
combination with Gelman and had preliminary discussions with these companies to
determine whether they did have any such interest. The companies identified
included Pall and Memtec Limited, a New South Wales, Australia corporation
("Memtec").
 
     The first meeting between Gelman and Pall took place on June 12th and
included Messrs. Gelman and Davis and representatives of Cleary Gull on behalf
of Gelman, and, on behalf of Pall, Messrs. Eric Krasnoff, Chairman and Chief
Executive Officer, and Jeremy Hayward-Surry, President and Chief Financial
Officer, and representatives of Dillon, Read & Co. Inc. ("Dillon Read"), Pall's
financial advisor. At that meeting, the Gelman representatives presented an
overview of Gelman's business and preliminary valuation expectations.
 
     In late June and early July, Gelman's representatives requested Pall,
Memtec and other potential merger partners to make offers to acquire Gelman, by
way of a tax-free merger. Gelman received proposals from Pall, Memtec and other
companies during the second week of July.
 
     On July 12th, the Board of Directors of Gelman, Cleary Gull and Gelman's
legal counsel met to discuss the written offers which had been received by
Gelman, including the offers made by Pall and Memtec. Cleary Gull and Gelman's
legal counsel provided a detailed review of each of the offers received,
including the proposed exchange ratios, covenants, termination provisions and
break-up fees. Cleary Gull analyzed the benefits, synergies, risks and
opportunities presented by each of the offers. After extensive discussions,
Gelman's Board of Directors unanimously authorized negotiations with several of
the prospective merger partners, including Pall and Memtec. Over the period July
12th through July 18th, further negotiations between Gelman and each of Pall and
Memtec took place. As a result of these negotiations, a revised offer was made
by Memtec.
 
     At a special meeting of Gelman's Board of Directors held on July 18th,
Cleary Gull and Gelman's legal counsel reviewed in detail the terms of the offer
made by Memtec, which contemplated a tax-free transaction to be accounted for as
a pooling of interests and included a proposed exchange ratio. After
considerable discussion, the Board of Directors unanimously approved the merger
contemplated by the letter of intent with Memtec as being in the best long-term
interests of Gelman's stockholders. On July 22nd, the Memtec Board of Directors
approved the execution of the letter of intent and a public announcement of the
proposed transaction with Memtec was made.
 
     Between July 22nd and August 29th, representatives of Memtec and Gelman
conducted due diligence investigations of the other's respective businesses and
affairs and negotiated the terms of a definitive merger agreement (the "Memtec
Merger Agreement") and ancillary agreements. As a result of these negotiations,
the parties agreed to a fixed exchange ratio of 1.05 Memtec American Depositary
Shares ("Memtec ADSs") for each Gelman Share (a per share equivalent value for
each Gelman Share of $34.65, based on the closing bid price of a Memtec ADS on
August 29th). On August 30th, the Memtec Merger Agreement was executed by Gelman
and Memtec, and a public announcement of the proposed transaction was made.
Among other things, the Memtec Merger Agreement gave the Gelman Board of
Directors the right to terminate the
 
                                       19
<PAGE>   24
 
Memtec Merger Agreement if the average trading price of a Memtec ADS prior to
the Gelman stockholders' meeting scheduled to approve the Memtec Merger
Agreement was less than $27.00 per share.
 
     On September 16th, Mr. Krasnoff wrote to Mr. Gelman as follows: "I was
disappointed to learn that you had entered into a definitive merger agreement
with Memtec Ltd. I believe Pall has the potential to provide greater near-term
and long-term value to Gelman's shareholders. Should your agreement with Memtec
provide an opportunity to renew discussions, we request that you allow Pall to
present our case to your Board. You have my assurance that we would respond
expeditiously should such an opportunity present itself."
 
     On October 5th and 6th, Mr. Gelman spoke to other members of the Strategic
Planning Committee and certain other directors of Gelman concerning a possible
transaction with Pall, in view of the significant decline in the value of Memtec
ADSs since the signing of the letter of intent and of the Memtec Merger
Agreement.
 
     On October 7th, the Gelman Board of Directors, Cleary Gull and Gelman's
legal counsel met to discuss the advisability of pursuing a transaction with
Pall in light of the recent trading prices for Memtec ADSs, which were less than
$27.00 per share and resulted in a per share equivalent value for a Gelman Share
of $28.35. After considerable discussion, the Board concluded that it would be
appropriate, in the exercise of its fiduciary duties to the Gelman stockholders,
to determine Pall's interest in pursuing a transaction with Gelman (while
continuing to take all steps necessary to complete the merger with Memtec in the
event that an agreement could not be reached with Pall). Accordingly, on October
7th, a representative of Cleary Gull contacted a representative of Pall to
determine whether Pall continued to be interested in a transaction with Gelman.
Cleary Gull advised Pall that an offer received from Pall to acquire Gelman
could be considered by Gelman's Board of Directors without violating the terms
of the Memtec Merger Agreement.
 
     The Memtec Merger Agreement allowed Gelman to discuss and negotiate a
transaction with Pall if Gelman kept Memtec informed of discussions or
negotiations with Pall relating to such a transaction, and provided to Memtec
copies of all information provided to Pall. The Memtec Merger Agreement also
allowed Gelman to terminate the Memtec Merger Agreement and to sign an agreement
to be acquired by another company if (a) the Board of Directors determined in
good faith that the proposed transaction with the other company would be more
favorable to Gelman stockholders from a financial point of view than the
transaction with Memtec, (b) the Board of Directors concluded in good faith that
such action was necessary in order for the Board to act in a manner consistent
with its fiduciary duties to stockholders, and (c) Gelman paid Memtec a
termination fee of $3.0 million.
 
     Pall indicated a willingness to renew discussions with Gelman and an
exploratory meeting involving management of both companies and their
professional advisors was held on October 10th at Pall's offices in Port
Washington, New York. Pursuant to the Memtec Merger Agreement, Gelman had
notified Memtec on the previous day that such discussions were to be held. As
required by the rules of the Australian Stock Exchange, Memtec issued a press
release announcing that it had been informed that discussions between Gelman and
Pall were being held. In a subsequent press release, the Chairman of Memtec
announced that Memtec would not increase the value of its offer for the Gelman
Shares.
 
     Beginning at the October 10th meeting and over the course of the following
two weeks, intensive negotiations took place between Pall and Gelman and their
respective financial and legal advisors. In addition, representatives of Pall
and Gelman, including senior management of each company, conducted legal,
financial, accounting and management due diligence investigations of the other's
respective businesses and affairs. A negotiated draft of a proposed merger
agreement with Pall was reviewed in detail by the Gelman Board of Directors at a
meeting held on October 18th. At the meeting, the Board also considered a
presentation made by Cleary Gull comparing the Memtec and Pall merger agreements
and the historical and projected price performance of the Memtec ADSs and the
Pall Shares. After considerable discussion, the Board authorized management of
Gelman, Cleary Gull and its legal counsel to continue to pursue a possible
transaction with Pall while continuing to take all actions necessary to complete
the merger with Memtec.
 
     On October 18th, the Pall Board of Directors met and considered a possible
acquisition of Gelman by Pall. At the meeting, representatives of Dillon Read
reported on their firm's valuation of Gelman. The Pall Board then unanimously
authorized Mr. Krasnoff to negotiate and execute a merger agreement with Gelman.
 
                                       20
<PAGE>   25
 
Thereupon, on the same day, Pall submitted an offer to acquire Gelman for Pall
Shares valued at approximately $32.00 per Gelman Share. On October 22nd, Gelman
rejected that offer. On October 23rd, Pall submitted a revised offer which
provided for a floating exchange ratio so as to provide $33.00 worth of Pall
Shares for each Gelman Share should Pall Shares trade at an average price of
between $25.29 and $27.96 per share for the 30 trading days preceding the third
trading day before Gelman's stockholder vote on the transaction. If such average
price for such period were $25.29 or less or $27.96 or more, the exchange ratio
would be fixed at 1.3047 or 1.1804, respectively. In addition, Pall indicated
its willingness to pay a $10.0 million break-up fee to Gelman if the merger
could not be completed because the waiting period under the HSR Act had not
expired or been terminated prior to October 15, 1997.
 
     The Gelman Board of Directors met on October 23rd and October 24th to
consider the status of negotiations with Pall and the merger with Memtec. At
each of these meetings, the Gelman Board of Directors authorized continued
negotiations with Pall to determine whether a transaction which would be more
favorable to Gelman stockholders than the Memtec merger could be obtained.
 
     Over the next 48 hours, Gelman and Pall continued to negotiate several key
terms of a proposed merger agreement, including a termination provision should
the Pall Shares trade below a certain level. On October 25th, Pall indicated its
willingness to provide Gelman the right to terminate the merger agreement if
Pall's average stock price, over the 30-trading day period referred to above,
was less than $21.
 
     On October 27th, the Gelman Board of Directors met by telephone conference
to discuss the proposed merger with Pall. At the meeting, management of Gelman,
Cleary Gull and Gelman's legal counsel discussed the terms of the proposed
Merger Agreement and related agreements, and the benefits to Gelman stockholders
of the Merger. Gelman's management and legal counsel reported the results of
their management, financial, accounting and legal due diligence with respect to
Pall and commented on the due diligence performed by Pall with respect to
Gelman. Cleary Gull reviewed with the Board its financial analysis of the Merger
and delivered its oral opinion, which was confirmed by its written opinion dated
October 27, 1996, to the effect that, based upon and subject to certain matters
stated therein, as of the date of such opinion, the consideration to be received
by the Gelman stockholders pursuant to the Merger Agreement was fair, from a
financial point of view, to such holders. See "The Merger -- Opinion of Gelman's
Financial Advisor." In addition, the Gelman Board of Directors determined, after
consultation with Cleary Gull, that the Merger with Pall was more favorable to
Gelman's stockholders from a financial point of view than the proposed merger
with Memtec, and Gelman's counsel advised the Gelman Board of Directors that
approving the Merger Agreement was necessary in order for the Board to act in a
manner that was consistent with its fiduciary obligations to Gelman's
stockholders.
 
     The Gelman Board of Directors then reviewed and fully discussed the Merger
Agreement and related agreements and unanimously approved the Merger Agreement
and recommended that the stockholders of Gelman approve and adopt the Merger
Agreement, subject to such revisions and further negotiations as the senior
management of Gelman may approve. In a separate resolution, the Gelman Board
unanimously approved (with Messrs. Gelman and Davis abstaining) proposed forms
of new employment agreements with Messrs. Gelman and Davis replacing then
existing agreements. See "Interests of Certain Persons in the
Merger -- Employment Agreements and Related Matters." Finally, the Board of
Directors unanimously authorized the termination of the Memtec Merger Agreement
pursuant to its terms and the payment of the $3.0 million termination fee due
Memtec under the Memtec Merger Agreement. See "-- Gelman's Reasons for the
Merger; Recommendation of Gelman's Board of Directors" and "-- Opinion of
Gelman's Financial Advisor."
 
     The Gelman Board met in the evening on Sunday, October 27th; shortly after
midnight, the Merger Agreement was executed by Gelman and Pall and a public
announcement of the Merger was made the following morning.
 
                                       21
<PAGE>   26
 
GELMAN'S REASONS FOR THE MERGER; RECOMMENDATION OF GELMAN'S BOARD OF DIRECTORS
 
     As described above under "Background of the Merger," the terms of the
Merger Agreement, including the Exchange Ratio, were determined through
negotiations between Gelman and Pall following extensive discussions, financial
analysis and due diligence. Gelman's Board of Directors believes that the terms
of the Merger Agreement and the transactions contemplated thereby are fair to,
and in the best interests of, Gelman and its stockholders and has unanimously
approved the Merger Agreement and recommends the approval and adoption of the
Merger Agreement and the transactions contemplated thereby by the stockholders
of Gelman.
 
     The Board of Directors of Gelman believes that the Merger offers a unique
opportunity to combine two successful and financially sound companies into a
single entity with the product base, financial strength and global market reach
to compete in today's international marketplace. In particular, the Board of
Directors of Gelman believes that the following benefits will result from the
Merger:
 
     Liquidity -- Pall has approximately 115,333,000 shares outstanding
(approximately 125,900,000 shares after giving effect to the Merger), and the
average daily trading volume of the Pall Shares on the NYSE during 1996 was
approximately 295,000 shares. Pall's market capitalization and trading volume
will provide Gelman's stockholders with an opportunity to trade Pall Shares they
receive in the Merger without significant liquidity or regulatory constraints.
 
     Minimal Price Volatility -- The trading prices of Pall Shares have been
stable over the last several years due to the relatively consistent price
earnings multiple and the fact that Pall's historical financial results have
generally been in line with analysts' estimates of financial performance. This
lack of price volatility affords Gelman's stockholders the more stable trading
market for Pall Shares and reduces their risk of a substantial decline in the
value of their investment if Gelman were not to perform as expected.
 
     Capital Resources -- Pall has significantly greater capital resources and
access to capital and a larger research and development budget than Gelman does
on a stand-alone basis. Gelman's ability to utilize Pall's capital and research
and development capabilities will expand its opportunities for research and
product development, sales growth and new product introductions.
 
     Greater Global Reach -- Gelman is a leading supplier in the laboratory and
health care markets, while Pall is a major supplier to the aeropower and fluid
processing markets. Gelman's sales are approximately 60% in the U.S. and 40%
elsewhere, while Pall's sales are approximately 35% in the U.S. and 65% foreign.
The combination will expand the growth opportunities for Gelman in international
markets.
 
     Industry Consolidation -- The Gelman Board of Directors recognized that the
present and anticipated environment for the filtration industry and the
potential for further consolidation within the industry could adversely affect
Gelman's competitive position.
 
     In reaching its decision to approve the Merger Agreement and the
transactions contemplated thereby, Gelman's Board of Directors considered a
number of factors, including:
 
          (i) information concerning the financial performance and condition,
     business operations and prospects of each of Gelman and Pall and Gelman's
     projected future value and prospects as a stand-alone entity and on a
     combined basis with Pall;
 
          (ii) current industry, economic and market conditions which have
     encouraged filtration companies to have broader product lines and greater
     financial resources in order to better compete in the global filtration
     marketplace;
 
          (iii) the enhancement of the strategic and market position of the
     combined companies beyond that achievable by Gelman on a stand-alone basis;
 
          (iv) the structure of the transaction and terms of the Merger
     Agreement, including the Exchange Ratio and the right of the Gelman Board
     of Directors to terminate the Merger Agreement if the Average Trading Price
     of a Pall Share is less than $21.00 at any time prior to the Merger, which
     terms were the result of arm's-length negotiations between Gelman and Pall;
 
          (v) the financial analysis and the opinion of Cleary Gull as described
     below;
 
                                       22
<PAGE>   27
 
          (vi) the fact that the Merger would provide the stockholders of Gelman
     with a significant premium over the market price immediately prior to
     Gelman's announcement on July 16, 1996 that it was considering strategic
     alternatives to enhance shareholder value;
 
          (vii) the terms of the Merger Agreement that permit Gelman's Board of
     Directors, in the exercise of its fiduciary duties and subject to certain
     conditions, to respond to unsolicited inquiries regarding potential
     business combination transactions. Gelman's Board of Directors noted that,
     in specified events, Gelman would have certain rights of termination as a
     result of which Gelman would be obligated to pay Pall a fee of $5.0
     million, which, in the view of Gelman's Board of Directors, would not
     unreasonably impede any interested third party from proposing a superior
     transaction;
 
          (viii) the terms of the Merger Agreement that required Pall to pay a
     fee of $10.0 million in the event the waiting period under the HSR Act had
     not expired or been terminated on or prior to October 15, 1997;
 
          (ix) the expectation that the Merger will afford Gelman's stockholders
     the opportunity to receive Pall Shares in a transaction that is non-taxable
     for federal income tax purposes;
 
          (x) the results of Gelman's legal, financial, accounting and
     management due diligence investigations of Pall; and
 
          (xi) the likelihood that the Merger will be consummated.
 
     The foregoing discussion of the information and factors considered is not
intended to be exhaustive but includes the material factors considered and given
weight by the Gelman Board of Directors. In addition, in reaching the
determination that the Merger is fair to and in the best interests of Gelman's
stockholders, in view of the wide variety of factors considered in connection
with its evaluation of the proposed Merger, Gelman's Board of Directors
considered the factors above as a whole and did not find it practical to
quantify or otherwise attempt to assign specific or relative weights to such
factors, and the individual directors may have given differing weights to
different factors.
 
     THE GELMAN BOARD OF DIRECTORS HAS UNANIMOUSLY APPROVED THE MERGER
AGREEMENT, BELIEVES THE TERMS OF THE MERGER AGREEMENT ARE FAIR TO, AND IN THE
BEST INTERESTS OF, GELMAN AND ITS STOCKHOLDERS, AND RECOMMENDS A VOTE FOR
APPROVAL AND ADOPTION OF THE MERGER AGREEMENT BY THE STOCKHOLDERS OF GELMAN.
 
OPINION OF GELMAN'S FINANCIAL ADVISOR
 
     Gelman engaged Cleary Gull to act as its financial advisor in connection
with the transactions contemplated by the Merger Agreement and to render a
fairness opinion. Cleary Gull delivered to the Gelman Board of Directors its
written fairness opinions dated October 27, 1996 and December 27, 1996, to the
effect that, as of the dates of such opinions, the consideration to be received
by the Gelman stockholders pursuant to the Merger Agreement was fair, from a
financial point of view, to the Gelman stockholders.
 
     The full text of Cleary Gull's fairness opinion dated December 27, 1996,
which sets forth the assumptions made, procedures followed, matters considered
and limits on the review undertaken, is attached hereto as Exhibit B to this
Proxy Statement-Prospectus. Cleary Gull's opinion is directed only to the
fairness, from a financial point of view, to the holders of Gelman Shares of the
consideration to be received by such holders pursuant to the Merger Agreement
and does not constitute a recommendation to any holder of Gelman Shares as to
how such stockholder should vote with respect to the Merger Agreement. The
summary of Cleary Gull's opinion set forth below is qualified in its entirety by
reference to the full text of such opinion attached hereto as Exhibit B.
STOCKHOLDERS OF GELMAN ARE URGED TO READ SUCH OPINION IN ITS ENTIRETY.
 
     In arriving at its opinion, Cleary Gull reviewed, analyzed and considered
such financial and other factors as it deemed appropriate under the
circumstances, including among others, the following: (i) certain publicly
available business and historical financial information relating to Gelman and
Pall; (ii) certain other internal information, primarily financial in nature,
concerning the business and operations of Gelman and Pall furnished to Cleary
Gull by Gelman and Pall, respectively, for purposes of its analysis; (iii) the
business prospects of Gelman and Pall; (iv) certain publicly available
information concerning the estimates of the
 
                                       23
<PAGE>   28
 
future operating and financial performance of Gelman and Pall prepared by
industry experts unaffiliated with either Gelman or Pall ("Analysts'
Estimates"); (v) the historical and current stock market data for Gelman Shares,
for Pall Shares and for certain other companies that Cleary Gull believed to be
generally comparable to Gelman or Pall; (vi) publicly available financial
information with respect to certain other companies that Cleary Gull believed to
be generally comparable to Gelman or Pall; (vii) the financial impact of the
Merger on Pall's future earnings per share; (viii) an unleveraged after-tax
discounted cash flow analysis of both Gelman and Pall; (ix) an analysis of
Gelman's percentage contribution to the operating results for Pall compared to
the implied percentage ownership interest of holders of Gelman Shares in Pall
after giving effect to the Merger; (x) a comparison of the purchase price
premium to be paid for the Gelman Shares based on the Exchange Ratio to certain
other similar-sized mergers; (xi) certain publicly available information
concerning the nature and terms of certain other transactions that Cleary Gull
believed to be relevant on a comparative basis; (xii) an historical comparison
of Gelman's and Pall's stock market prices; and (xiii) the terms of the Merger
Agreement. Cleary Gull also met with certain officers and employees of Gelman
and Pall to discuss the foregoing, as well as other matters Cleary Gull believed
relevant to its inquiry.
 
     In preparing its opinion, Cleary Gull relied on the accuracy and
completeness of all information that was publicly available, supplied or
otherwise communicated to Cleary Gull by or on behalf of Gelman and Pall, and
Cleary Gull did not independently verify such information. Cleary Gull assumed
that the financial forecasts examined by it were reasonably prepared on bases
reflecting the best currently available estimates and good faith judgments of
management of Gelman and Pall as to the future performance of Gelman and Pall.
Cleary Gull also assumed that (i) certain strategic and operating benefits
contemplated by the management of Gelman and Pall will be realized as a result
of the Merger, and (ii) all material liabilities (contingent or otherwise, known
or unknown) of Gelman and Pall are as set forth in the consolidated financial
statements of Gelman and Pall, respectively, or were disclosed to Cleary Gull.
Cleary Gull did not make an independent evaluation or appraisal of the assets or
liabilities (contingent or otherwise) of Gelman and Pall, nor was Cleary Gull
furnished with any such evaluations or appraisals. Cleary Gull did not make any
physical inspection of the properties or assets of Gelman or Pall. Cleary Gull's
fairness opinion is based upon economic, monetary and market conditions existing
on the date thereof. Furthermore, Cleary Gull expressed no opinion as to the
price or trading range at which Pall Shares will trade after the Effective Time.
Cleary Gull's fairness opinion does not address the relative merits of the
Merger or the decision of the Gelman Board of Directors to proceed with the
Merger. The Exchange Ratio was determined by Gelman and Pall in arm's-length
negotiations. Cleary Gull did not, and was not requested to, make any
recommendations as to the form or amount of consideration to be paid pursuant to
the Merger Agreement. Gelman did not place any limitations upon Cleary Gull with
respect to the procedures followed or factors considered in rendering its
opinion. Cleary Gull assumed that the Merger will be treated as a pooling of
interests for financial reporting purposes and as a tax-free reorganization for
federal income tax purposes.
 
     The preparation of a fairness opinion involves various determinations as to
the most appropriate and relevant quantitative methods of financial analyses and
the application of those methods to the particular circumstances and, therefore,
such an opinion is not readily susceptible to partial analysis or summary
description. Accordingly, Cleary Gull believes that its analyses must be
considered as a whole and that considering any portion of such analyses and of
the factors considered, without considering all analyses and factors, could
create a misleading or incomplete view of the process underlying Cleary Gull's
opinion. In its analyses, Cleary Gull made numerous assumptions with respect to
industry performance, general business and economic conditions and other
matters, many of which are beyond the control of Gelman and Pall. Any estimates
contained in these analyses are not necessarily indicative of actual values or
predictive of future results or values, which may be significantly more or less
favorable than as set forth therein. In addition, analyses relating to the value
of businesses do not purport to be appraisals or to reflect the prices at which
businesses may actually be sold. Cleary Gull's opinion and financial analyses
were only one of many factors considered by the Gelman Board of Directors in its
evaluation of the Merger and should not be viewed as determinative of the views
of the Gelman Board of Directors or management with respect to the Exchange
Ratio or the proposed Merger.
 
                                       24
<PAGE>   29
 
     In connection with its presentation to Gelman's Board of Directors on
October 27, 1996, Cleary Gull advised Gelman's Board of Directors that, in
evaluating the consideration to be received pursuant to the Merger Agreement by
the holders of Gelman Shares, Cleary Gull had performed a variety of financial
analyses with respect to Gelman and Pall. Certain of these financial analyses
are summarized below.
 
     Analysis of Selected Publicly Traded Companies Comparable to Pall.  Using
publicly available information, Cleary Gull analyzed, among other things, the
trading multiples of Pall and selected publicly traded filtration companies,
including Calgon Carbon Corporation; Culligan Water Technologies, Inc.; Ionics,
Incorporated; Memtec; Millipore Corporation; Osmonics, Inc.; and United States
Filter Corporation (the "Public Comparables"). Cleary Gull compared, with
respect to each of the Public Comparables and Pall, equity market capitalization
as a multiple of net income for the latest 12 months ("LTM") and estimated
calendar 1996 and 1997 net income, and the equity market capitalization plus
total debt less cash and cash equivalents (the "Adjusted Market Value") as a
multiple of LTM net revenue, LTM earnings before interest and taxes ("EBIT") and
LTM earnings before interest, taxes, depreciation and amortization ("EBITDA").
In addition, Cleary Gull compared the ratio of (a) the result obtained by
dividing the stock market price per share by the earnings per share ("EPS")
estimate for calendar 1996 (the "Calendar 1996 P/E Ratio") to (b) the EPS growth
rate between calendar 1996 and 1997 multiplied by 100 (the "PEG Ratio"). Net
income projections for the Public Comparables were based on either Analysts'
Estimates or I / B / E / S and future net income for Pall was based on Analysts'
Estimates. All trading multiples were based on closing stock prices as of
October 23, 1996 (the "Pricing Date").
 
     Cleary Gull compared the trading multiples of the Public Comparables to the
trading multiples for Pall. Cleary Gull noted that as of the Pricing Date,
Pall's Calendar 1996 P/E Ratio and the ratio of the Pall Share price as of the
Pricing Date to its EPS estimate for calendar 1997 were 20.6x and 18.0x,
respectively, compared to a range of 16.9x to 40.2x and 15.3x to 28.5x,
respectively, for the Public Comparables. Cleary Gull also calculated the
multiples of Pall's Adjusted Market Value to LTM net revenue, LTM EBIT and LTM
EBITDA. Cleary Gull noted that Pall Shares traded at 3.29x their LTM net
revenue, 15.7x their LTM EBIT and 12.4x their LTM EBITDA compared to a range of
1.36x to 3.04x, 11.6x to 38.5x and 7.4x to 22.8x, respectively, for the Public
Comparables. Cleary Gull also noted that Pall's PEG Ratio as of the Pricing Date
was 140.1% as compared to a range of 43.4% to 188.1% for the Public Comparables.
This analysis indicated that the derived multiples based on the price of a Pall
Share on the Pricing Date were within the range of multiples for the Public
Comparables, except in the case of the net revenue multiple, which was slightly
above the high end of the range.
 
     Pall Historical Latest Twelve Month Price/Earnings Ratio Analysis.  Cleary
Gull calculated the ratio of the price of a Pall Share to Pall's LTM EPS as of
that particular date (the "LTM P/E Ratio") for the period from October 22, 1993
to the Pricing Date. The range of Pall's LTM P/E Ratio over the period reviewed
was 16.3x to 30.5x. Cleary Gull noted that as of the Pricing Date, Pall's LTM
P/E Ratio of 22.0x was within this range. Cleary Gull also noted that Pall's LTM
P/E Ratio as of the Pricing Date was not at an historical high and in fact was
equal to the median LTM P/E Ratio over the period analyzed.
 
     Earnings Dilution Analysis.  Cleary Gull analyzed the potential pro forma
effect of the Merger on Pall's EPS for the fiscal years ending July 31, 1997 and
July 31, 1998. In performing this analysis, Cleary Gull assumed (i) the issuance
of 1.2394 Pall Shares for each outstanding Gelman Share; (ii) the Merger would
be accounted for under the pooling-of-interests method of accounting; and (iii)
certain synergies would be achieved as a result of the Merger. Cleary Gull
combined Gelman's future operating results with the corresponding future
operating results of Pall. Cleary Gull then divided the pro forma operating
results by the pro forma shares outstanding. Cleary Gull compared the pro forma
EPS to Pall's stand-alone EPS to determine the impact on Pall's EPS. This
analysis suggested that the Merger would not be dilutive to Pall's EPS for the
fiscal years ending July 31, 1997 and July 31, 1998.
 
     Discounted Cash Flow Analysis of Pall.  Cleary Gull analyzed Pall's fully
diluted per share value based on an unleveraged discounted cash flow analysis of
the five-year financial performance of Pall. The annual after-tax cash flows for
the five-year period were based on a financial plan provided by Pall's
management. The discounted cash flow analysis determined the discounted present
value of the unleveraged after-tax cash flows
 
                                       25
<PAGE>   30
 
generated over the five-year period and then added a terminal value based on a
range of EBIT multiples from 13.0x to 17.0x. The unleveraged after-tax cash
flows and terminal value were discounted using a range of discount rates from
12.0% to 20.0%. Cleary Gull derived the range of EBIT multiples and discount
rates on the basis of multiples of EBIT and estimated risk adjusted costs of
capital for the Public Comparables. Based on this analysis, Cleary Gull derived
an equity value range for Pall of $24.18 to $32.25 per fully diluted Pall Share.
Cleary Gull noted that the market price of $26.625 per Pall Share (the "Pall
Market Price") on the Pricing Date was within the indicated range.
 
     Pall Common Stock Trading Analysis.  Cleary Gull analyzed the closing sale
prices of the Pall Shares on the NYSE over the 52-week period ending on the
Pricing Date. The high and low closing sale prices for a Pall Share for the
preceding 52-week period were $29.125 and $20.375, respectively. Cleary Gull
also reviewed a trading price/trading volume analysis of the Pall Shares over
the 52-week period ending on the Pricing Date which indicated that over this
time period more than 50% of the Pall Shares traded during this time period
traded in the marketplace at a price equal to or greater than $26.00 per share
and 94% of the Pall Shares traded during this time period traded in the market
place at a price equal to or greater than $23.00 per share.
 
     Pall Share Trading Volume Analysis.  Cleary Gull analyzed the historical
daily trading volume of the Pall Shares over various periods so that the Gelman
Board of Directors could consider the opportunity for those Gelman stockholders
who, after the Merger, choose to sell all or a portion of their Pall Shares to
achieve complete or partial liquidity for their holdings. The 30, 60, 90 and 360
day average daily trading volume of Pall Shares was approximately 324,000;
282,000; 316,000 and 287,000, respectively. For Gelman, the 30, 60, 90 and 360
day average daily trading volume was approximately 15,000; 17,000; 14,000 and
11,000, respectively. Cleary Gull noted that Pall's average daily trading volume
was significantly higher than the average daily trading volume for Gelman Shares
over the same periods.
 
     Analysis of Selected Publicly Traded Companies Comparable to
Gelman.  Cleary Gull compared the trading multiples for Gelman assuming a stock
market price of $33.00 per share (the "Implied Purchase Price") based on the
Pall Market Price multiplied by the Exchange Ratio to the trading multiples for
the Public Comparables. Gelman's Adjusted Market Value as a multiple of LTM net
revenue, LTM EBIT and LTM EBITDA based on the Implied Purchase Price was 2.40x,
22.5x and 16.2x, respectively, as compared to a median of 2.40x, 17.9x and
13.2x, respectively, for the Public Comparables. Gelman's equity market
capitalization based on the Implied Purchase Price as a multiple of estimated
1996 and estimated 1997 calendar net income was 31.4x and 26.7x, respectively,
as compared to a median of 24.0x and 18.9x, respectively, for the Public
Comparables. This analysis indicated that the trading multiples for Gelman based
on the Implied Purchase Price were generally above the median for the Public
Comparables.
 
     Discounted Cash Flow Analysis of Gelman.  Cleary Gull analyzed Gelman's
fully diluted per share value based on an unleveraged discounted cash flow
analysis of the future financial performance of Gelman. Such financial
performance was based on a five-year financial plan provided by Gelman's
management. The discounted cash flow analysis determined the discounted present
value of the unleveraged after-tax cash flows generated over the five-year
period and then added a terminal value based on a range of EBIT multiples from
11.0x to 15.0x. The unleveraged after-tax cash flows and terminal value were
discounted using a range of discount rates from 14.0% to 22.0%. Cleary Gull
derived the range of EBIT multiples and discount rates on the basis of multiples
of EBIT and estimated risk adjusted costs of capital for the Public Comparables.
Based on this analysis, Cleary Gull derived an equity value range for Gelman of
$22.20 to $29.38 per fully diluted share. Cleary Gull noted that the Implied
Purchase Price was higher than the price range indicated by the unleveraged
after-tax discounted cash flow analysis.
 
     A second unleveraged discounted cash flow analysis of the future financial
performance of Gelman was also analyzed by Cleary Gull. Such financial
performance was based on the same five-year financial plan for Gelman; however,
$2.5 million of synergies were included in the first year and $3.75 million of
synergies included in each of the following years. Similar EBIT multiples and
discount rates were utilized. Based on this analysis, Cleary Gull derived an
equity value range for Gelman of $25.02 to $33.07 per fully diluted share.
Cleary Gull noted that the Implied Purchase Price was also within the calculated
equity value range after giving Gelman some credit for the anticipated synergies
from the Merger.
 
                                       26
<PAGE>   31
 
     Contribution Analysis.  Cleary Gull reviewed certain financial information
(including LTM net revenue and projected fiscal year 1996, 1997 and 1998 EBIT
and net income) for Gelman and Pall and for Pall after giving effect to the
Merger. Based on such review and assuming that each Gelman Share will be
converted into 1.2394 Pall Shares, Cleary Gull analyzed the contribution of
Gelman to Pall after giving effect to the Merger and compared the contribution
to the Gelman stockholders' pro forma ownership. Such analysis indicated that
the implied percentage ownership interest of the Gelman stockholders in Pall on
a pro forma basis would be greater than Gelman's contribution to the pro forma
operating results.
 
     Analysis of Selected Comparable Transactions.  Cleary Gull reviewed nine
transactions involving the acquisition or proposed acquisition of companies in
businesses similar to Gelman's. Cleary Gull calculated the multiples of Adjusted
Market Value to LTM net revenues and LTM EBITDA (the "Acquisition Multiples")
for each of these transactions. Cleary Gull compared the multiples based on the
Implied Purchase Price to the Acquisition Multiples. Gelman's Adjusted Market
Value as a multiple of LTM net revenue and LTM EBITDA based on the Implied
Purchase Price was 2.40x and 16.2x, respectively, as compared to a range of
0.27x to 2.49x and 6.4x to 14.5x, respectively, for the comparable transactions.
This analysis indicated that the multiples for Gelman based on the Implied
Purchase Price were within or above the range for the selected comparable
transactions.
 
     Exchange Ratio Profile.  Cleary Gull analyzed the historical ratio of the
market price of Gelman Shares to the market price of Pall Shares during the
period from July 16, 1995 to July 17, 1996. This analysis implied an exchange
ratio ranging from a high of 1.07 Pall Shares for each Gelman Share to a low of
0.79 of a Pall Share for each Gelman Share, with a median during the period of
0.91 of a Pall Share for each Gelman Share. Cleary Gull noted that the median
historical exchange ratio was less than the Exchange Ratio based on the Pall
Market Price. Cleary Gull also calculated the ratio of the Gelman Share price on
July 16, 1996 ($19.25 per share) with and without a 31% premium to the Pall
Share price on the same date ($20.375 per share). The calculation implied an
exchange ratio of 1.23x and 0.95x, respectively, of Pall Shares for each Gelman
Share. Cleary Gull also performed an analysis of the historical ratio of the
market price of Gelman Shares plus a 31% premium to the market price of Pall
Shares during the same period. This analysis implied an exchange ratio ranging
from a high of 1.40 Pall Shares for each Gelman Share to a low of 1.03 Pall
Shares for each Gelman Share. Cleary Gull noted that the Exchange Ratio, based
on the Pall Market Price, fell within this range.
 
     Cleary Gull has advised Gelman's Board of Directors that, in connection
with rendering its fairness opinion dated December 27, 1996, Cleary Gull
considered updated financial information and market data in performing updates
to the financial analyses described above. Cleary Gull stated that the updated
financial analyses confirmed its opinion as described above.
 
     Cleary Gull was selected by Gelman as its financial advisor in connection
with the Merger because of Cleary Gull's reputation and expertise as an
investment banking firm and its expertise and familiarity with the
filtration/separation industry. Cleary Gull, as part of its investment banking
business, is regularly engaged in the valuation of businesses and their
securities in connection with mergers and acquisitions, underwritings of
equities, private placements and valuations for estate, corporate and other
purposes.
 
     Pursuant to an engagement letter between Cleary Gull and Gelman, Gelman
paid Cleary Gull a non-refundable fee of $100,000 upon signing of the letter of
intent with Memtec (the "Signing Fee"). In addition, upon consummation of the
Merger, Cleary Gull will be paid a fee equal to 0.7% times the total number of
Gelman Shares exchanged in the Merger (including shares resulting from exercised
options and warrants) times the per share equivalent price of a Gelman Share
less the Signing Fee. If the per share equivalent price of a Gelman Share is
$33.00, the additional fee to be paid to Cleary Gull upon consummation of the
Merger would be approximately $1,760,000 (based on the number of shares
outstanding on the Record Date). In connection with the termination of the
Memtec Merger Agreement and the execution of the Merger Agreement, Gelman paid
Cleary Gull an advance of $750,000 against the fee due upon consummation of the
Merger. Gelman has also agreed to reimburse Cleary Gull for its reasonable
out-of-pocket expenses up to $75,000 and to indemnify it against certain
expenses and liabilities in connection with its services as financial advisor,
including those arising under federal securities laws.
 
                                       27
<PAGE>   32
 
     In the ordinary course of its business, Cleary Gull actively trades the
equity securities of Gelman and Pall for Cleary Gull's own account and for the
accounts of its customers and, accordingly, may at any time hold a long or short
position in such securities. In March 1995, Cleary Gull was the managing
underwriter of a public offering of 1,437,500 Gelman Shares for which Cleary
Gull received customary compensation.
 
PALL'S REASONS FOR THE MERGER
 
     Pall's business strategy is to provide filtration products at every stage
of a product's life cycle, from filters used for new product development in the
laboratory on through production and end use of the product. In order to carry
out this strategy, Pall must have greater presence in the laboratory area.
Management believes that Gelman's products and distribution network will provide
Pall with ready access to the laboratory product area. Gelman has a strong,
established presence in the laboratory product area for filtration and
separation products, including small volume filters for use in research and
clinical and industrial laboratories for sample preparation, new drug
development, environmental testing and other applications, which complement and
broaden Pall's smaller and more specialized laboratory product line. Gelman's
distribution strength to laboratories will also enhance distribution of Pall's
membranes for diagnostics and molecular biology. Management also expects Pall's
global distribution system to hospitals and blood centers to broaden sales of
Gelman's custom designed medical filtration products, which are distinct from
Pall's filtration products. Gelman's process filter products fit well into
Pall's product line.
 
REGULATORY APPROVALS
 
     Under the HSR Act, the Merger could not be consummated until notifications
were given and certain information was furnished to the FTC and the Antitrust
Division of the Department of Justice, and specified waiting period requirements
thereunder were satisfied. Pall and Gelman filed the required premerger
notification and report forms with the Department of Justice and the FTC with
respect to the Merger on November 15, 1996, and the required waiting period
expired on Friday, December 13, 1996.
 
     At any time before or after the Effective Time, and notwithstanding the
expiration of the waiting period under the HSR Act, the Department of Justice or
the FTC, any state or a private person or entity could seek, under federal or
state antitrust laws, to enjoin the Merger or to cause Pall to divest itself, in
whole or in part, of Gelman or of other businesses conducted by Pall. In
addition, to the extent applicable, filings must also be made with the
appropriate governmental authorities having jurisdiction over antitrust matters
in the jurisdictions other than the United States where Pall and/or Gelman
conduct business. Based on information available to them, management of Pall and
Gelman believe that the Merger can be effected in compliance with all applicable
antitrust laws. However, there can be no assurance that a challenge to the
Merger on antitrust grounds will not be made or that, if such a challenge is
made, Pall and Gelman will prevail. The obligations of Pall and Gelman to
consummate the Merger are subject to the condition that there be no preliminary
or permanent injunction or other order by any federal or state court which
prevents the consummation of the Merger. Each party has agreed to use
commercially reasonable efforts to have any such injunction or order lifted.
 
     Pall and Gelman are not aware of any license or regulatory permit which is
material to the business of Gelman and which is likely to be adversely affected
by the Merger, or of any approval or other action by any state, federal or
foreign government or governmental agency that would be required prior to the
Merger.
 
ACCOUNTING TREATMENT
 
     The Merger is expected to be accounted for by the pooling-of-interests
method of accounting. Under this method of accounting, the recorded assets and
liabilities of Pall and Gelman will be carried forward at their recorded amounts
to Pall after the Merger, income of Pall after the Merger will include the
income of Pall and Gelman for the entire fiscal year in which the Merger occurs,
and the reported income of Pall and Gelman for prior periods will be combined
and restated as income of Pall after the Merger. It is a condition to Pall's
obligation to effect the Merger that it receive an opinion from Coopers &
Lybrand L.L.P., Gelman's independent public accountants, that neither Gelman nor
any of its affiliates has taken or agreed to take any
 
                                       28
<PAGE>   33
 
action that would affect the ability of Pall to account for the Merger as a
pooling of interests. See "-- Resales of Pall Shares by Affiliates of Gelman"
and "The Merger Agreement -- Conditions to the Merger."
 
NO APPRAISAL RIGHTS
 
     Under Section 450.1762(2)(a) of the Michigan Business Corporation Act,
holders of Gelman Shares have no appraisal or dissenters' rights with respect to
the Merger inasmuch as the Gelman Shares were listed on a national securities
exchange (the ASE) on the Record Date.
 
SURRENDER OF GELMAN SHARE CERTIFICATES
 
     Promptly after the Effective Time, a letter of transmittal containing
notice of the Merger and instructions with respect to the surrender of
certificates previously representing Gelman Shares will be sent to each record
holder of Gelman Shares as of the Effective Time. The letter of transmittal will
set forth the procedure for surrendering such certificates for exchange to
Wachovia Bank of North Carolina, N.A., as Exchange Agent. From and after the
Effective Time, each such Gelman stock certificate will evidence only the right
to receive (without interest) the number of Pall Shares fixed by the Exchange
Ratio for each Gelman Share evidenced by such certificate. Until such Gelman
stock certificates have been surrendered and exchanged, the holders thereof will
not be entitled to any of the rights of Pall shareholders, including the right
to receive any dividends or other distributions made on the Pall Shares issuable
to them under the Merger Agreement. Dividends and other distributions payable on
the Pall Shares after the Effective Time and prior to the exchange of
certificates by any holder of Gelman Shares, together with any cash payment in
lieu of a fractional Pall Share, will be remitted to such holder, without
interest, at the time that his or her Gelman stock certificates are surrendered
for exchange.
 
RESALES OF PALL SHARES BY AFFILIATES OF GELMAN
 
     None of the Pall Shares received by the Gelman stockholders in connection
with the Merger will be subject to restrictions on resale or other transfer by
them under the Securities Act, except that Pall Shares received by persons who
are deemed to be "affiliates" (as such term is defined in Rule 144 under the
Securities Act) of Gelman prior to the Merger may be resold by them only
pursuant to an effective registration statement under the Securities Act or in
transactions exempt from the registration requirements under the Securities Act
by virtue of, for example, Rule 145 under the Securities Act. In general, under
Rule 145, an affiliate of Gelman, together with certain members of his or her
immediate family, would be entitled, for a period of two years after the
Effective Time, to sell Pall Shares received in the Merger only through
unsolicited "brokers' transactions" or in transactions directly with a "market
maker," as such terms are defined in Rule 144. Rule 145 would only be available
for resales of Pall Shares by affiliates of Gelman at a time when Pall has filed
with the Commission all periodic reports required to be filed by it under the
Exchange Act (e.g., Forms 10-K and 10-Q). After two years from the Effective
Time, affiliates of Gelman who are not affiliates of Pall would be able to sell
freely the Pall Shares received by them in the Merger, subject only to the
above-mentioned periodic reports requirement, which would continue to apply
until three years after the Effective Time, at which time former affiliates of
Gelman would be able to sell such Pall Shares without any restrictions.
 
     Pursuant to the Merger Agreement, Gelman has identified to Pall all persons
who may be deemed affiliates of Gelman for purposes of Rule 145, including all
directors and executive officers of Gelman, and has advised such persons of the
resale restrictions imposed by applicable securities laws, including the
Commission's Accounting Series Release No. 135 ("ASR 135"). Under generally
accepted accounting principles, it is a general condition to the use of
pooling-of-interests accounting for a business combination that such combination
represent a sharing of rights and risks among the stockholders of the combining
entities. ASR 135 and related interpretations of the Commission staff provide,
in general, that this risk-sharing condition will be deemed to be satisfied if
no affiliate of either entity in a business combination sells (whether privately
or publicly), or in any way reduces his risk relative to, any common shares
received in such business combination (or common shares of either company in the
business combination held by an affiliate of either company) during the period
beginning 30 days before the consummation of the business combination and
 
                                       29
<PAGE>   34
 
ending at such time as financial results covering at least 30 days of
post-merger combined operations have been published.
 
     The Commission staff has interpreted ASR 135 to permit certain de minimis
sales by affiliates. To be de minimis, (i) the sales by an affiliate must not be
greater than 10 percent of that affiliate's pre-combination (or equivalent
post-combination) shares, and (ii) the aggregate sales by all affiliates of a
combining entity must not exceed the equivalent of one percent of that entity's
pre-combination outstanding shares.
 
     Pursuant to the Merger Agreement, Pall and Gelman are obtaining agreements
from their respective directors, executive officers and other affiliates that
they will comply with the provisions of ASR 135 and related interpretations of
the Commission staff. Pall agreed in the Merger Agreement to publish post-Merger
combined financial results sufficient to satisfy ASR 135 within 20 days of the
end of the first full 30-day period following the closing of the Merger.
 
                           OFFER TO EXCHANGE OPTIONS
 
     Pursuant to the Merger Agreement and contingent upon the effectiveness of
the Merger, Pall is offering each holder of "options" to purchase Gelman Shares
("Gelman Options") the opportunity to exchange each of his or her Gelman Options
for an option to purchase Pall Shares ("Pall Options"). As of the Record Date,
there were Gelman Options outstanding to purchase an aggregate of 500,288 Gelman
Shares at a weighted average exercise price of $14.84 per share.
 
PALL OPTIONS
 
     Each Pall Option will be on substantially the same substantive terms and
conditions as the Gelman Option for which it is being exchanged (e.g., each Pall
Option will have the same vesting schedule and expiration date as the Gelman
Option for which it is exchanged except that Messrs. Gelman and Davis have
agreed to accept Pall Options having a shorter term than their Gelman
Options -- see "Interests of Certain Persons in the Merger"). The form of Pall
Option is attached as Schedule B to Exhibit C to this Proxy
Statement-Prospectus, and the following description is qualified in its entirety
by reference thereto.
 
     The exercise price per Pall Share issuable upon exercise of a Pall Option
will be determined by dividing the exercise price per Gelman Share issuable upon
exercise of the related Gelman Option by the Exchange Ratio. The number of Pall
Shares issuable on exercise of a Pall Option will be determined by multiplying
the number of Gelman Shares that could have been acquired upon exercise of the
related Gelman Option by the Exchange Ratio.
 
     The Pall Options will be administered by the Compensation Committee of
Pall's Board of Directors (the "Committee"). The exercise price payable upon
exercise of a Pall Option must be paid in cash or, with the consent of the
Committee, by delivery of Pall Shares having a value equal to the exercise
price, or partly in cash and partly by delivery of Pall Shares.
 
     A Pall Option is not intended to be an incentive stock option within the
meaning of Section 422 of the Internal Revenue Code unless the Gelman Option for
which such Pall Option is exchanged states that it is intended to be an
incentive stock option, in whole or in part, in which event the Pall Option
issued in exchange will include the same statement of intention.
 
     The Registration Statement of which this Proxy Statement-Prospectus is a
part includes the Pall Options and the Pall Shares issuable on exercise of the
Pall Options.
 
EXCHANGE AGREEMENTS
 
     Prior to the consummation of the Merger, Pall and Gelman will request each
holder of an outstanding Gelman Option to enter into an Exchange Agreement
substantially in the form attached hereto as Exhibit C. Schedule A to the
Exchange Agreement will be completed with the appropriate information determined
by reference to the existing Gelman Option in exchange for which the Pall Option
is being issued. Pall and Gelman will seek to obtain executed Exchange
Agreements from all holders of outstanding Gelman Options
 
                                       30
<PAGE>   35
 
prior to the Effective Time. Holders of Gelman Options who enter into Exchange
Agreements will be required to surrender their Gelman Option agreements in order
to receive the Pall Option or Options issuable in exchange therefor.
 
     It is a condition to the obligation of Pall to consummate the Merger that
the number of Gelman Shares covered by Gelman Options which are not exercised or
converted into Pall Options before the Effective Time shall not exceed 128,458
Gelman Shares. Messrs. Gelman and Davis have agreed to exchange their Gelman
Options for Pall Options. See "Interests of Certain Persons in the
Merger -- Stock Options and Warrants."
 
     Holders of Gelman Options who do not exchange their Gelman Options for Pall
Options will continue to hold Gelman Options. If Gelman Shares are issued
pursuant to such options after consummation of the Merger, it is Pall's
intention to take steps permitted under the merger provisions of the Michigan
Business Corporation Act to cash out any such Gelman Shares.
 
FEDERAL INCOME TAX CONSEQUENCES
 
     The following is a summary of the United States federal income tax
considerations relating to Pall Options issued by Pall in exchange for Gelman
Options granted in consideration of services rendered or to be rendered by the
optionee to Gelman or its subsidiaries. This summary does not purport to be a
complete description of such considerations, and each optionee is advised to
consult his own tax adviser before consenting to an exchange of options,
exercising an option or disposing of shares acquired pursuant to the exercise of
options.
 
     Exchange of Options.  An exchange of outstanding Gelman Options for Pall
Options will not be a taxable event for United States federal income tax
purposes.
 
     Nonqualified Options.  Of the outstanding Gelman Options, options to
purchase an aggregate of 453,288 Gelman Shares are nonqualified stock options
("Nonqualified Options") and options to purchase an aggregate of 47,000 Gelman
Shares are intended to be "incentive stock options" as defined in Section 422 of
the Code ("Incentive Options"). Upon exercise of a Nonqualified Option, the
optionee recognizes ordinary income in an amount equal to the excess, if any, of
the fair market value of the shares on the date of exercise over the exercise
price. If the optionee is an employee of Gelman or a subsidiary at the time of
option grant, such ordinary income is classified as taxable wages subject to
federal and state income tax withholding and social security withholding, which
withholding taxes are due and payable at the time the Nonqualified Option is
exercised. Upon request by Pall, upon exercise of a Nonqualified Option, the
optionee will be required to pay to Pall an amount equal to 28% of such ordinary
income for federal income tax withholding purposes and, where applicable, an
appropriate percentage for state and local income tax withholding purposes, to
cover the amount of income tax withholding which Pall is required to make.
 
     If, with the consent of the Committee, an optionee pays the option exercise
price by delivering Pall Shares already owned by such optionee, such delivery
would constitute a non-taxable exchange by the optionee. The optionee would
recognize ordinary income in an amount equal to the fair market value of the
additional shares received (i.e., above the number of shares delivered).
Optionees are especially urged to consult their own tax advisers before paying
the exercise price of an option by delivering Pall Shares already owned.
 
     Pall is entitled to an income tax deduction in the same amount that, and
for Pall's taxable year in which, the optionee recognizes ordinary income from
the exercise of a Nonqualified Option.
 
     Upon a sale of shares purchased on the exercise of a Nonqualified Option,
the optionee will recognize short-term or long-term capital gain or loss,
depending on whether the shares are held for more than one year after the date
of exercise. Such gain or loss will be measured by the difference between the
selling price of the shares and the market price of the shares on the date of
exercise.
 
     Incentive Options.  In general, to the extent that the terms of Pall
Options granted in exchange for Incentive Options are not superior, from the
optionee's viewpoint, to such Gelman Options, such Pall Options should likewise
qualify as Incentive Options. However, if the vesting of a Gelman Option is
accelerated by the
 
                                       31
<PAGE>   36
 
Merger, and as a result, options having a fair market value (at the date of
grant) of more than $100,000 first become exercisable in the year of such
accelerated vesting, the option will not receive Incentive Option tax treatment
with respect to the excess over said $100,000 amount.
 
     In general, the optionee under an Incentive Option does not recognize any
income at either the time the option is granted or at the time it is exercised
(although the exercise of an Incentive Option can have "alternative minimum tax"
consequences to the optionee as described below under the caption
"-- Alternative Minimum Tax"). If an optionee holds shares purchased upon
exercise of an Incentive Option for at least (i) two years after the date such
option has been granted to the optionee and (ii) one year after the date such
shares are transferred to the optionee, then any gain or loss in respect of a
subsequent disposition of such shares will generally be treated as a long-term
capital gain or loss. In the event that the optionee disposes of shares
purchased upon exercise of an Incentive Option (for this purpose a disposition
includes a sale, exchange, gift or certain other transfers of legal title but
not a mere pledge) before the end of such two- and one-year periods (any such
disposition being herein referred to as a "disqualifying disposition"), then the
excess, if any, of the aggregate fair market value of such shares on the date on
which the Incentive Option was exercised over the aggregate exercise price of
such shares will be treated as ordinary income to the optionee in the year of
the disqualifying disposition, unless such disqualifying disposition is a sale
or exchange for less than the fair market value of such shares on the date of
exercise of the Incentive Option, in which case the amount that will be so
treated as ordinary income will be limited to the excess, if any, of the
aggregate amount realized upon such sale or exchange over the aggregate exercise
price of the shares so sold or exchanged.
 
     In the event that a disqualifying disposition is a sale or exchange for
more than the fair market value of such shares on the date of exercise of the
Incentive Option, the excess of the aggregate amount realized upon such sale or
exchange over the aggregate fair market value of such shares on the date of
exercise will be treated as a capital gain. Such gain will be treated as
long-term capital gain if the shares have been held for more than one year at
the time of the disqualifying disposition and otherwise will be treated as
short-term capital gain. In the event that a disqualifying disposition is a sale
or exchange for less than the aggregate exercise price of such shares, no
ordinary income will be realized by the optionee, and the difference between the
aggregate amount realized upon such sale or exchange and such aggregate exercise
price will be treated as a long-term or short-term capital loss, depending upon
whether such shares have or have not been held for more than one year at the
time of such sale or exchange.
 
     The rules described above relating to disqualifying dispositions may not
apply to certain transfers -- for example, transfers by bequest or incident to
divorce.
 
     Pall will not be entitled to any federal income tax deduction with respect
to the grant or exercise of an Incentive Option, but may be entitled, in the
year of a disqualifying disposition, to a deduction equal to the amount, if any,
that the optionee must treat as ordinary income.
 
     If, with the consent of the Committee, an optionee pays the option exercise
price by delivering Pall Shares already owned by such optionee, such delivery
would constitute a non-taxable exchange by the optionee and would not affect the
Incentive Option status of the Pall Shares issued upon exercise of the option.
However, if the Pall Shares delivered in payment had previously been acquired
upon exercise of an Incentive Option and were not subsequently held for the
requisite one- and two-year periods, the delivery of such shares in payment of
the exercise price of an Incentive Option would constitute a disqualifying
disposition of the shares so delivered. Optionees are especially urged to
consult their own tax advisers before paying the exercise price of an Incentive
Option by delivering Pall Shares already owned.
 
     In the event an optionee exercises an Incentive Option more than three
months (one year if the optionee is disabled) after employment terminates, the
tax treatment with respect to the option is the same as for a Nonqualified
Option (discussed above).
 
     Alternative Minimum Tax.  The Code imposes an alternative minimum tax
determined by applying a special tax rate to the excess, if any, of an
individual's "alternative minimum taxable income" over a specified
 
                                       32
<PAGE>   37
 
exemption amount. Alternative minimum taxable income includes the amount by
which the fair market value of shares obtained through exercise of an Incentive
Option exceeds the exercise price. In addition, the basis of any shares acquired
through the exercise of an Incentive Option for determining gain or loss for
purposes of the alternative minimum tax will be the shares' fair market value at
exercise. In the event of a disqualifying disposition of the shares in the year
the Incentive Option is exercised, the amount includible as alternative minimum
taxable income is limited to the excess of the sales price over the exercise
price.
 
                   INTERESTS OF CERTAIN PERSONS IN THE MERGER
 
EMPLOYMENT AGREEMENTS AND RELATED MATTERS
 
     Under the existing employment agreements between Gelman and each of Messrs.
Gelman, Davis and George Uveges (Gelman's Vice President and Chief Financial
Officer), the Merger will result in a "change of control" of Gelman.
Accordingly, under such agreements, Messrs. Gelman, Davis and Uveges would be
entitled to receive certain payments if their employment were to be terminated
(including by voluntary resignation) within one year of the Effective Time. The
payments would consist of up to five years' base salary (one year's salary for
Mr. Uveges) and, if certain performance goals were being met, an incentive bonus
for each year of base salary paid equal to the incentive bonus that would have
been paid in the year of termination. In addition, unvested stock option awards
immediately would vest in full upon a change of control.
 
     In light of the pre-existing employment agreement between Gelman and Mr.
Gelman, Mr. Gelman will receive a "change of control" payment at the Effective
Time equal to the sum of $2,000,000 plus the amount of any related "parachute
payment" excise tax due in respect of this payment ("Tax Reimbursement"), under
agreements entered into between Gelman and Mr. Gelman and approved by Pall.
Following consummation of the Merger, Mr. Gelman would continue as an employee
of Gelman with reduced responsibilities, under an employment agreement, for a
period of five years, during which time he would receive an annual salary of
$150,000, an annual expense allowance in the same amount and the use of an
office, clerical and staff support and certain insurance and other fringe
benefits. Mr. Gelman will have the title of Chairman of Technical Research. The
employment agreement between Gelman and Mr. Gelman and approved by Pall will
only become effective, and the "change of control" payment will only be made, if
the Merger is consummated.
 
     In light of the pre-existing employment agreement between Gelman and Mr.
Davis, Mr. Davis will receive a "change of control" payment at the Effective
Time equal to the sum of $924,386 plus the amount of any Tax Reimbursement,
under an employment agreement entered into between Pall, Gelman and Mr. Davis
(the "Davis Employment Agreement"). Under that agreement, Mr. Davis would
continue as President and Chief Operating Officer of Gelman for not less than
three years after the Merger, would receive an annual base salary of not less
than $325,000 and would be eligible for an annual bonus of up to 75% of his
annual base salary if certain performance goals for Gelman are achieved. For the
fiscal years ended on or about July 31, 1997, 1998 and 1999, the annual bonus
would be 75% of base salary without reference to performance goals. Mr. Davis
would also have certain insurance and other fringe benefits. The Davis
Employment Agreement will only become effective and the "change of control"
payment will only be made if the Merger is consummated.
 
     Messrs. Gelman and Davis have each agreed, in their new employment
agreements just described, to exchange their Gelman Options for Pall Options
expiring not more than five years from the closing of the Merger notwithstanding
that the unexpired terms of their existing Gelman Options range from about six
and a half to about nine and a half years.
 
INDEMNIFICATION
 
     The Merger Agreement provides that from and after the Effective Time,
Gelman (as the surviving corporation in the Merger with Sub) will continue to
observe any indemnification provisions currently existing in the Gelman Articles
or Gelman By-Laws, or in indemnification agreements for the benefit of any
individuals who served as directors or officers of Gelman at any time prior to
the Effective Time. The Merger Agreement further requires Pall, from and after
the Effective Time, to indemnify, defend and hold harmless each individual who
has served at any time prior to the Effective Time as an officer, director,
employee or fiduciary of Gelman or any of its subsidiaries against (i) all
losses, claims, damages, costs, expenses, liabilities or judgments or amounts
that are paid in settlement with the approval of Pall, or in connection with any
claim,
 
                                       33
<PAGE>   38
 
action, suit, proceeding or investigation based on or arising out of the fact
that such person is or was a director, officer, employee or fiduciary of Gelman
or any of its subsidiaries, whether pertaining to any matter existing or
occurring at or prior to the Effective Time and whether asserted or claimed
prior to, or at or after the Effective Time, and (ii) all such liabilities based
on, or arising from, the Merger Agreement or transactions contemplated thereby,
in each case to the full extent permitted under the Michigan Business
Corporation Act. See "The Merger Agreement -- Additional
Agreements -- Directors' and Officers' Indemnification."
 
STOCK OPTIONS AND WARRANTS
 
     The Merger will result in the acceleration of vesting of certain Gelman
Options held by executive officers of Gelman. Options with respect to 37,500,
82,500, 20,000 and 11,625 Gelman Shares held by Messrs. Gelman, Davis, Uveges
and another employee of Gelman, respectively, will vest as a result of such
acceleration.
 
     As of the Record Date, the executive officers and directors of Gelman were
the holders of Gelman Options to purchase an aggregate of 350,986 Gelman Shares
at prices ranging from $3.39 to $27.75 per share, and will have the right to
exchange their Gelman Options for Pall Options. (Messrs. Gelman and Davis have
agreed to do so.) See "Offer to Exchange Options." The following table sets
forth information as to the Gelman Options currently held by the executive
officers and directors of Gelman, and the Pall Options which may be received by
them. The information on the Pall Options below assumes that 1.2394 Pall Shares
are issued for each Gelman Share (the Pro Forma Exchange Ratio).
 
<TABLE>
<CAPTION>
                                      GELMAN OPTIONS                       PALL OPTIONS
                                    -------------------     ------------------------------------------
                                    NO. OF                  NO. OF
                                    GELMAN     EXERCISE      PALL      EXERCISE         EXPIRATION
                                    SHARES      PRICE       SHARES      PRICE              DATE
                                    ------     --------     ------     --------     ------------------
<S>                                 <C>        <C>          <C>        <C>          <C>
Charles Gelman....................  30,000     $  18.88     37,182      $15.23             (a)
                                    20,000(b)     20.76     24,788       16.75             (a)
Kim A. Davis......................  46,250         6.61     57,322        5.33             (a)
                                    56,250        10.92     69,716        8.81             (a)
                                    30,000        17.75     37,182       14.32             (a)
                                    20,000(b)     17.75     24,788       14.32             (a)
                                    45,000        27.00     55,773       21.78             (a)
Anthony P. Kelly..................  10,000         3.78     12,394        3.05      December 16, 1997
                                     2,700         3.45      3,346        2.78      September 19, 2000
                                    11,250         7.11     13,943        5.74      July 29, 2003
                                     3,750        10.92      4,648        8.81      June 17, 2004
                                    12,500        21.00     15,493       16.94      September 20, 2005
                                    15,000        23.88     18,591       19.27      December 14, 2005
Edward J. Levitt..................   3,375         4.45      4,183        3.59      April 3, 1999
                                       700         3.45        868        2.78      September 19, 2000
                                     2,250         3.67      2,789        2.96      September 24, 2002
                                       400        26.13        496       21.08      April 2, 2006
Mark A. Sutter....................   1,062         3.39      1,316        2.74      January 20, 2002
                                     5,062         3.67      6,274        2.96      September 24, 2002
                                     8,437         4.55     10,457        3.67      December 1, 2002
                                     5,000        14.88      6,197       12.01      December 15, 2004
George Uveges.....................  20,000       22.875     24,788       18.46      August 21, 2006
Saul H. Hymans....................   1,000        27.75      1,239       22.39      (c)
Nina I. McClelland................   1,000        27.75      1,239       22.39      (c)
</TABLE>
 
- ---------------
(a) The expiration date of the Pall Options issued to Messrs. Gelman and Davis
    will be the fifth anniversary of the Effective Time.
(b) Incentive Options.
(c) The expiration date of the Pall Options issued to Drs. Hymans and McClelland
    will be the date 90 days after the Effective Time.
 
                                       34
<PAGE>   39
 
     In addition, certain non-employee directors of Gelman are currently the
holders of warrants to purchase Gelman Shares (the "Gelman Warrants"). At the
Effective Time, the Gelman Warrants will automatically, in accordance with their
terms, be converted into warrants to purchase Pall Shares (the "Pall Warrants").
See "The Merger Agreement -- Effect of the Merger on Gelman Shares." The
following table sets forth information as to the Gelman Warrants currently held
by the non-employee directors of Gelman, and the Pall Warrants which will be
received by them upon the effectiveness of the Merger. The information on the
Pall Warrants below assumes that 1.2394 Pall Shares are issued for each Gelman
Share (the Pro Forma Exchange Ratio). The Pall Warrants in the table will expire
90 days after the date on which the persons listed cease to be directors of
Gelman. It is expected that all such persons will resign as directors as of the
Effective Time.
 
<TABLE>
<CAPTION>
                                                           GELMAN WARRANTS          PALL WARRANTS
                                                         -------------------     -------------------
                                                         NO. OF                  NO. OF
                                                         GELMAN     EXERCISE      PALL      EXERCISE
                                                         SHARES      PRICE       SHARES      PRICE
                                                         ------     --------     ------     --------
<S>                                                      <C>        <C>          <C>        <C>
Robert Collins.........................................   9,000      $10.92      11,155      $ 8.81
John A Geishecker, Jr..................................  11,250        4.05      13,943        3.27
                                                         28,350        3.78      35,137        3.05
                                                          4,500       10.92       5,577        8.81
Saul H. Hymans.........................................   4,500       10.92       5,577        8.81
Nina I. McClelland.....................................   4,050        4.45       5,020        3.59
                                                          4,500       10.92       5,577        8.81
Charles Newman.........................................   4,500        3.33       5,577        2.69
                                                          4,500       10.92       5,577        8.81
</TABLE>
 
                                       35
<PAGE>   40
 
                              THE MERGER AGREEMENT
 
     The following description does not purport to be complete and is qualified
in its entirety by reference to the Merger Agreement, a copy of which is
attached as Exhibit A to this Proxy Statement-Prospectus and is incorporated
herein by this reference. Certain defined terms used in this section shall have
the meanings given in the Merger Agreement. See the Glossary of Defined Terms
following the Table of Contents of the Merger Agreement.
 
EFFECT OF THE MERGER ON GELMAN SHARES
 
     At the Effective Time, Sub will be merged with and into Gelman, which
thereupon will become a wholly-owned subsidiary of Pall. Each Gelman Share
issued and outstanding immediately prior to the Merger will be converted into
the right to receive between 1.1804 and 1.3047 Pall Shares, as determined by the
Exchange Ratio formula described on the cover page of this Proxy
Statement-Prospectus. As of the Record Date, there were 8,070,010 Gelman Shares
outstanding, which will be converted into an aggregate of up to 10,528,942 Pall
Shares (assuming the maximum Exchange Ratio of 1.3047 Pall Shares for each
Gelman Share). The actual number of Pall Shares to be issued in the Merger to
Gelman stockholders will not be determinable until the close of trading on the
NYSE on the fourth trading day immediately preceding the date of the Special
Meeting.
 
     No fractional Pall Shares will be issued in the Merger. Each Gelman
stockholder who otherwise would be entitled to a fractional Pall Share (after
aggregating all fractional Pall Shares to be received by such stockholder) will
be entitled to receive an amount in cash (without interest) determined by
multiplying the fractional share interest to which such holder would otherwise
be entitled by the closing sale price of a Pall Share as reported for NYSE
composite transactions on the last trading day immediately preceding the date of
the Effective Time.
 
     As a result of the Merger, the Gelman Shares will be delisted from the ASE,
the registration of the Gelman Shares under the Exchange Act will terminate,
Gelman will cease to file periodic reports with the Commission, and Gelman will
be relieved of the obligation to comply with the proxy rules of Regulation 14A
under the Exchange Act.
 
     As of the Record Date, Gelman had outstanding Gelman Warrants to acquire an
aggregate of 95,150 Gelman Shares at exercise prices per share ranging from
$3.33 to $22.65. See "Interests of Certain Persons in the Merger -- Stock
Options and Warrants." Pursuant to their respective terms, each of the Gelman
Warrants is currently fully exercisable with the exception of a warrant for
20,000 shares sold to a former attorney for Gelman. In connection with the
Merger, each of the Gelman Warrants which remains unexercised at the Effective
Time will be automatically converted in accordance with its terms into a Pall
Warrant to purchase a number of Pall Shares equal to the number of Gelman Shares
issuable upon the exercise of the related Gelman Warrant multiplied by the
Exchange Ratio, at an exercise price per Pall Share equal to the exercise price
per Gelman Share of the related Gelman Warrant divided by the Exchange Ratio.
 
     In addition, in connection with the Merger, Pall is offering Pall Options
to purchase up to an aggregate of 652,725 Pall Shares (assuming the maximum
Exchange Ratio) in exchange for all outstanding Gelman Options. See "Offer to
Exchange Options."
 
CONDITIONS TO THE MERGER
 
  Conditions to Each Party's Obligation
 
     Unless waived by Pall and Gelman, their respective obligations to effect
the Merger are subject to the following conditions:
 
     Stockholder Approval.  The Merger Agreement and the transactions
contemplated therein shall have been approved and adopted by the requisite vote
of the stockholders of Gelman under applicable law.
 
     NYSE Listing.  The Pall Shares issuable in the Merger shall have been
authorized for listing on the NYSE.
 
                                       36
<PAGE>   41
 
     Other Approvals.  All material governmental waivers, consents, orders and
approvals legally required for the consummation of the Merger and the
transactions contemplated thereby shall have been obtained and be in effect at
the Effective Time. The waiting period under the HSR Act expired on December 13,
1996. See "The Merger -- Regulatory Approvals."
 
     The Registration Statement.  No stop order suspending the effectiveness of
the Registration Statement under the Securities Act shall have been issued and
remain in effect and no proceedings for that purpose shall have been instituted
or, to the knowledge of Pall and Gelman, threatened by the Commission or any
state regulatory authorities.
 
     No Injunctions or Restraints.  No preliminary or permanent injunction or
other order or decree by any federal or state court which prevents the
consummation of the Merger shall have been issued and remain in effect.
 
     No Actions.  No action shall have been taken, and no statute, rule or
regulation shall have been enacted, by any state or federal government or
governmental agency in the United States which would prevent the consummation of
the Merger or make the consummation of the Merger illegal.
 
  Additional Conditions to Pall's Obligation
 
     The obligation of Pall to effect the Merger is subject to the fulfillment
of certain additional conditions unless waived by Pall, including the following:
 
     Performance of Obligations and Representations and Warranties of
Gelman.  Gelman shall have performed in all material respects its agreements
contained in the Merger Agreement required to be performed on or prior to the
date of the closing of the transactions contemplated by the Merger Agreement
(the "Closing Date"), and the representations and warranties of Gelman contained
in the Merger Agreement shall be true and correct in all material respects on
and as of the date made and on and as of the Closing Date as if then made,
except for those representations and warranties which address matters only as of
a particular date.
 
     Legal Opinion.  Pall shall have received an opinion from Godfrey & Kahn,
S.C., independent counsel to Gelman, dated as of the Closing Date, reasonably
satisfactory to Pall and addressing various legal matters related to the Merger.
 
     Affiliate Agreements.  Pall shall have received agreements from the
affiliates of Gelman, including Gelman's directors and executive officers, with
respect to their compliance with ASR 135. See "The Merger -- Resales of Pall
Shares by Affiliates of Gelman."
 
     No Material Changes.  After the date of the Merger Agreement, there shall
have been no changes that constitute, and no event or events shall have occurred
which have resulted in or constitute, a material adverse change in the business,
operations, properties, assets, condition (financial or other) or results of
operations of Gelman and its subsidiaries taken as a whole, other than changes
or events involving the financial performance of Gelman or changes or events
involving the financial condition of Gelman resulting solely from changes in the
financial performance of Gelman.
 
     Governmental Waivers and Consents; Legislation.  All governmental waivers,
consents, orders and approvals required to be obtained and all filings required
to be made by Gelman for the consummation by Gelman of the Merger and the
transactions contemplated in the Merger Agreement shall have been obtained and
made (except where the lack of such item would not have a material adverse
effect), and no governmental authority shall have promulgated any statute, rule
or regulation which, when taken together with all such promulgations, would
materially impair the value to Pall of the Merger. See "The Merger -- Regulatory
Approvals."
 
     Consents of Lenders and Lessors.  All required consents and approvals of
lenders who have advanced $5.0 million or more to Gelman and lessors of material
leases or other material contracts of Gelman shall have been obtained and be in
effect at the Effective Time.
 
                                       37
<PAGE>   42
 
     Pooling-of-Interests Accounting.  Coopers & Lybrand L.L.P., the independent
public accountants for Gelman, shall have delivered a letter stating that in
their opinion neither Gelman nor any of its affiliates has taken or agreed to
take any action that would affect adversely Pall's ability to account for the
Merger as a pooling of interests.
 
     Gelman Options.  Gelman Options shall have been exercised or the holders
thereof shall have agreed to exchange them for Pall Options so that the number
of Gelman Shares covered by Gelman Options after the closing of the Merger shall
not exceed 128,458. See "Offer to Exchange Options."
 
     Gelman's Sales.  Gelman's consolidated gross sales for the period
commencing August 1, 1996 and ending 60 days prior to the scheduled date of the
Special Meeting shall be not less than Gelman's consolidated gross sales for the
similar period during fiscal year 1996, in each case determined in accordance
with generally accepted accounting principles. Gelman's consolidated gross sales
from August 1, 1996 through December 5, 1996 (the date that was 60 days prior to
the scheduled date of the Special Meeting) exceeded Gelman's consolidated gross
sales for the comparable period during fiscal 1996.
 
  Additional Conditions to Gelman's Obligation
 
     The obligation of Gelman to effect the Merger is subject to the fulfillment
of certain additional conditions unless waived by Gelman, including the
following:
 
     Performance of Obligations and Representations and Warranties of Pall and
Sub.  Pall and Sub shall have performed in all material respects their
agreements contained in the Merger Agreement required to be performed on or
prior to the Closing Date, and the representations and warranties of Pall and
Sub contained in the Merger Agreement shall be true and correct in all material
respects on and as of the date made and on and as of the Closing Date as if made
at and as of such date, except for those representations and warranties which
address matters only as of a particular date.
 
     Legal Opinions.  Gelman shall have received an opinion from Godfrey & Kahn,
S.C., independent counsel to Gelman, in form and substance reasonably
satisfactory to Gelman, to the effect that (i) the Merger will be treated for
United States federal income tax purposes as a reorganization within the meaning
of Section 368(a) of the Internal Revenue Code of 1986, as amended (the "Code"),
(ii) Pall, Sub and Gelman will each be a party to the reorganization within the
meaning of Section 368(b) of the Code, and (iii) the stockholders of Gelman will
not recognize gain or loss as a result of the Merger, except to the extent such
stockholders receive any cash in lieu of a fractional Pall Share. In addition,
Gelman shall have received an opinion from Carter, Ledyard & Milburn,
independent counsel to Pall and Sub, dated the Closing Date, reasonably
satisfactory to Gelman and addressing various legal matters related to the
Merger.
 
     No Material Changes.  After the date of the Merger Agreement, there shall
have been no changes that constitute, and no event or events shall have occurred
which have resulted in or constitute, a material adverse change in the business,
operations, properties, assets, condition (financial or other) or results of
operations of Pall and its subsidiaries, taken as a whole.
 
     Governmental Waivers and Consents.  All governmental waivers, consents,
orders and approvals legally required and all filings required to be made by
Pall or Sub for the consummation of the Merger and the transactions contemplated
by the Merger Agreement shall have been obtained and made (except where the lack
of such an item would not have a material adverse effect). No governmental
authority shall have promulgated any statute, rule or regulation which, when
taken together with all such promulgations, would materially impair the value to
Gelman of the Merger.
 
     Fairness Opinion.  Gelman shall have received from Cleary Gull an updated
opinion, reasonably acceptable to Gelman, to the effect that the consideration
to be received by the stockholders of Gelman in the Merger is fair, from a
financial point of view, to such holders. Cleary Gull issued the updated opinion
on December 27, 1996, a copy of which is attached hereto as Exhibit B.
 
                                       38
<PAGE>   43
 
     Consents of Lenders and Lessors.  All required consents and approvals of
lenders who have advanced $5.0 million or more to Pall and lessors of material
leases or other material contracts of Pall shall have been obtained and be in
effect at the Effective Time.
 
REPRESENTATIONS AND WARRANTIES
 
     The Merger Agreement contains various representations and warranties by
each of Pall, Sub and Gelman relating to, among other things, (i) organization
and qualification to do business, (ii) capitalization, (iii) subsidiaries, (iv)
authority to enter into the Merger Agreement, non-contravention of laws or
governing documents and regulatory approvals, (v) reports and financial
statements, (vi) absence of undisclosed liabilities, (vii) absence of certain
changes or events, (viii) litigation, (ix) the Registration Statement and this
Proxy Statement-Prospectus, (x) violations of law, (xi) compliance with
agreements, (xii) taxes, (xiii) employee benefit plans and ERISA matters, (xiv)
labor controversies, (xv) environmental matters, (xvi) title to assets, (xvii)
stockholders' approvals, (xviii) trademarks and intellectual property, (xix)
material agreements, (xx) pooling of interests matters, (xxi) insurance, (xxii)
the absence of certain transactions with affiliates, and (xxiii) brokers and
finders.
 
CERTAIN COVENANTS
 
     During the period from the date of the Merger Agreement and continuing
until the Closing Date or earlier termination of the Merger Agreement, Gelman
has agreed, among other things, that it will, and that it will cause its
subsidiaries to:
 
     Ordinary Course.  Conduct their respective businesses in the ordinary and
usual course of business and consistent with past practice.
 
     Changes in Stock.  Not (i) amend or propose to amend their respective
articles of incorporation or by-laws, (ii) split, combine or reclassify their
outstanding capital stock, or (iii) declare, set aside or pay any dividend or
distribution payable in cash, stock, property or otherwise, except for the
payment of dividends or distributions by a wholly-owned subsidiary of Gelman.
 
     Issuance of Securities.  Not issue, sell, pledge or dispose of, or agree to
issue, sell, pledge or dispose of, any additional shares of, or any options,
warrants or rights of any kind to acquire, any shares of their capital stock of
any class or any debt or equity securities convertible into or exchangeable for
such capital stock, except that Gelman may issue shares upon exercise of Gelman
Options and Gelman Warrants outstanding on the date of the Merger Agreement.
 
     Other Conduct.  Not (i) incur or become contingently liable with respect to
any material indebtedness for borrowed money other than borrowings specified in
the Merger Agreement, (ii) redeem, purchase, acquire or offer to purchase or
acquire any shares of its capital stock or any options, warrants or rights to
acquire any of its capital stock or any security convertible into or
exchangeable for its capital stock, (iii) take any action which would jeopardize
the accounting treatment of the Merger as a pooling of interests, (iv) take or
fail to take any action, which action or failure would cause Gelman or its
stockholders (except to the extent that any stockholders receive cash in lieu of
fractional Pall Shares) to recognize gain or loss for federal income tax
purposes as a result of the consummation of the Merger, (v) make any acquisition
of any assets or businesses and expenditures for fixed or capital assets other
than those itemized in the Merger Agreement or expenditures in the ordinary
course of business which, in such cases of $100,000 or more, shall be on terms
reasonably acceptable to Pall, (vi) sell, pledge, dispose of or encumber any
assets or businesses other than sales in the ordinary course of business which,
in such cases involving $100,000 or more, shall be on terms reasonably
acceptable to Pall, or (vii) enter into any contract, agreement, commitment or
arrangement with respect to any of the foregoing.
 
     Preservation of Goodwill.  Use all commercially reasonable efforts to
preserve intact their respective business organizations and goodwill, keep
available the services of their respective present officers and key employees,
and preserve the goodwill and business relationships with customers, vendors and
others having
 
                                       39
<PAGE>   44
 
business relationships with them and not engage in any action, directly or
indirectly, with the intent to adversely impact the transactions contemplated by
the Merger Agreement.
 
     Communication with Pall.  Confer on a regular and frequent basis with one
or more representatives of Pall to report operational matters of materiality and
the general status of ongoing operations.
 
     No Changes in Employment Agreements.  Not enter into or amend any
employment, severance, or special pay arrangement with respect to termination of
employment or other similar arrangements or agreements with any directors,
officers or key employees, except in the ordinary course and consistent with
past practice which in cases involving $50,000 or more shall be on terms
acceptable to Pall.
 
     No Changes in Compensation Agreements.  Not adopt, enter into or amend any
bonus, profit-sharing, compensation, stock option, pension, retirement, deferred
compensation, health care or other employee benefit plan, agreement, trust, fund
or arrangement for the benefit or welfare of any employee or retiree, except as
required to comply with changes in applicable law, and except for increases in
wages in the ordinary course and consistent with past practice for non-executive
employees.
 
     During the period from the date of the Merger Agreement and continuing
until the Closing Date or earlier termination of the Merger Agreement, Pall has
agreed, among other things, that it will, and that it will cause its
subsidiaries, including Sub to:
 
     Changes in Stock.  Not split, combine or reclassify their outstanding
capital stock in a manner that would reduce the value of the Merger
consideration to be received by the Gelman stockholders, unless the Merger
consideration is adjusted to avoid such reduction in value.
 
     Preservation of Goodwill.  Use all commercially reasonable efforts to
preserve intact their respective business organizations and goodwill, keep
available the services of their respective present officers and key employees,
and preserve the goodwill and business relationships with customers, vendors and
others having business relationships with them and not engage in any action,
directly or indirectly, with the intent to adversely impact the transactions
contemplated by the Merger Agreement.
 
     Communication with Gelman.  Confer on a regular and frequent basis with one
or more representatives of Gelman to report operational matters of materiality
and the general status of ongoing operations, but Pall is not required to
disclose any confidential or proprietary information.
 
     No Solicitation.  The Merger Agreement provides that after the date of the
Merger Agreement and prior to the Effective Time or earlier termination of the
Merger Agreement, Gelman shall not, and shall not permit any of its subsidiaries
or advisors (including Cleary Gull) to, initiate, solicit, or seek, directly or
indirectly, negotiate or cooperate in any inquiries or make or implement any
proposal or offer to acquire all or any substantial part of the business and
properties of Gelman and its subsidiaries or more than fifty percent (50%) of
the capital stock of Gelman and its subsidiaries, whether by merger, purchase of
assets, tender offer or otherwise, whether for cash, securities or any other
consideration or combination thereof (any such transactions being referred to
herein as "Acquisition Transactions"), except for the Merger or any related
transactions.
 
     Notwithstanding any other provision in the Merger Agreement, in response to
an unsolicited proposal or inquiry (or a proposal or inquiry arising from a
general solicitation prior to July 22, 1996) with respect to an Acquisition
Transaction, (i) Gelman may engage in discussions or negotiations regarding such
proposal or inquiry with a third party who seeks to initiate such discussions or
negotiations and may furnish to such third party information concerning Gelman
and its business, properties and assets, and (ii) if such Acquisition
Transaction is a tender offer subject to the provisions of Section 14(d) of the
Exchange Act, Gelman's Board of Directors may take and disclose to Gelman's
stockholders a position contemplated by Section 14e-2(a) under the Exchange Act.
 
     In the event Gelman shall determine to provide any information or negotiate
as described above, or shall receive any offer of the type referred to above, it
shall (i) immediately provide Pall with a copy of all information provided to
the third party, (ii) inform Pall that information is to be provided, that
negotiations are to take place or that an offer has been received, as the case
may be, and (iii) furnish to Pall the identity of
 
                                       40
<PAGE>   45
 
the entity receiving such information or the proponent of such offer, if
applicable, and if an offer has been received, unless the Gelman Board of
Directors concludes that such disclosure is inconsistent with its fiduciary
duties under applicable law, a description of the material terms thereof.
 
     Gelman may terminate the Merger Agreement, withdraw, modify or not
recommend the approval of the Merger to the Gelman stockholders and enter into a
definitive agreement for an Acquisition Transaction if, but only if, (i) Gelman
shall have determined in good faith after consultation with the independent
financial advisors of Gelman that such Acquisition Transaction would be more
favorable to Gelman's stockholders from a financial point of view than the
Merger, and (ii) the Gelman Board of Directors shall conclude in good faith
after consultation with its legal counsel that such action is necessary in order
for the Gelman Board of Directors to act in a manner that is consistent with its
fiduciary obligations under applicable law.
 
ADDITIONAL AGREEMENTS
 
     Pursuant to the Merger Agreement, Pall, Sub and Gelman made the following
additional agreements:
 
          Financial Reports and Access to Information.  Pall, Sub and Gelman
     will furnish promptly to one another a copy of each report and other
     document filed or received by any of them pursuant to the requirements of
     federal and state securities laws or which may have a material effect on
     their respective businesses, properties or personnel. In addition, each
     party will afford the others access to their respective accountant's work
     papers, senior management, books, contracts and other information as a
     party may reasonably request in connection with the filings and opinions
     contemplated in the Merger Agreement.
 
          Stockholder Meeting.  Gelman will submit the Merger Agreement for the
     approval of its stockholders in accordance with applicable law or listing
     requirements and, subject to the fiduciary duties of its Board of Directors
     under applicable law, shall use its commercially reasonable efforts to
     obtain stockholder approval and adoption.
 
          Affiliate Agreements.  Gelman has delivered to Pall a letter
     identifying all persons who may be deemed Affiliates of Gelman under Rule
     145 of the Securities Act, including, without limitation, all directors and
     executive officers of Gelman, and Gelman has advised the persons identified
     in such letter of the resale restrictions imposed by applicable securities
     laws, including ASR 135. Pall and Gelman are obtaining from their
     respective directors, executive officers and affiliates an agreement to
     comply with the provisions of ASR 135. See "The Merger -- Resales of Pall
     Shares by Affiliates of Gelman."
 
          Stock Exchange Listing.  At or before the Effective Time, Pall will
     use its commercially reasonable efforts to effect the listing on the NYSE
     of the Pall Shares issuable in the Merger.
 
          Expenses and Fees.  Pall and Gelman each will bear its own expenses
     incurred in connection with the Merger, except (i) Pall shall pay and be
     responsible for all fees and expenses incurred in connection with the
     printing, filing and mailing of this Proxy Statement-Prospectus and with
     all HSR Act filings and any other filings required by antitrust regulations
     of other foreign jurisdictions; and (ii) if Gelman fails to fulfill its
     obligations described above under "Certain Covenants -- No Solicitation,"
     or terminates the Merger Agreement in the exercise of the fiduciary
     obligations of the Gelman Board of Directors with respect to an Acquisition
     Transaction, Gelman shall pay Pall the sum of $5.0 million in lieu of any
     other payments or penalties or the reimbursement of expenses incurred by
     Pall. If the HSR Act waiting period had not expired or been terminated on
     or before October 15, 1997, assuming that Gelman had cooperated in the HSR
     Act filing, Pall would have been obligated to pay Gelman the sum of $10.0
     million in lieu of any other payments or penalties or the reimbursement of
     expenses incurred by Gelman. See "The Merger -- Regulatory Approvals."
 
          Agreement to Cooperate.  Each party will use all reasonable efforts to
     take or cause to be taken all actions necessary to consummate and make
     effective the transactions contemplated by the Merger Agreement.
 
          Public Statements.  The parties (i) will consult with each other prior
     to issuing any press release or any written public statement with respect
     to the Merger Agreement or the transactions contemplated
 
                                       41
<PAGE>   46
 
     thereby, and (ii) will not issue any such press release or written public
     statement prior to such consultation, except as may be required by law or
     applicable listing requirements.
 
          Options and Warrants.  As of the Effective Time, each Gelman Option as
     to which an Exchange Agreement has been signed shall be exchangeable for a
     Pall Option (see "Offer to Exchange Options"), and all the Gelman Warrants
     shall automatically be converted into Pall Warrants (see "-- Effect of the
     Merger on Gelman Shares").
 
          Employee Benefit Plans.  Pall has agreed to provide benefit plans of
     general applicability which will be made available to employees of Gelman
     at the Effective Time and for at least two years thereafter, the terms of
     which shall be at least as favorable as those found in Gelman's plans in
     effect for the benefit of such employees prior to the Effective Time except
     to the extent that Pall determines that modifications are necessary to
     insure that such plans maintain their tax-qualified and tax-exempt status,
     to comply with other legal requirements. Pall has also agreed to give such
     employees credit for all eligibility and vesting they have accrued during
     their respective terms of employment with Gelman.
 
          Notification.  Each of Gelman, Pall and Sub have agreed to give prompt
     notice to each other of, and to use its reasonable best efforts to prevent
     or promptly remedy, (i) the occurrence or failure to occur or the impending
     or threatened occurrence or failure to occur, of any event which occurrence
     or failure to occur would be likely to cause any of its representations or
     warranties in the Merger Agreement to be untrue or inaccurate in any
     material respect at any time from the date of the Merger Agreement to the
     Effective Time and (ii) any material failure on its part to comply with or
     satisfy any covenant, condition or agreement to be complied with or
     satisfied by it under the Merger Agreement.
 
          Directors' and Officers' Indemnification.  Gelman, as the surviving
     corporation of the Merger (the "Surviving Corporation"), will continue to
     observe any indemnification provisions now existing in the Gelman Articles,
     Gelman By-Laws or in certain indemnification agreements identified pursuant
     to the Merger Agreement for the benefit of any individual who served as a
     director or officer of Gelman at any time prior to the Effective Time.
 
          Commencing at the Effective Time, Pall will indemnify, defend and hold
     harmless each individual who served as a director, officer, employee or
     fiduciary of Gelman or any of its subsidiaries (the "Indemnified Parties")
     at any time prior to the Effective Time from and against (i) all losses,
     claims, damages, costs, expenses, liabilities or judgments or amounts that
     are paid in settlement with the approval of Pall (which approval shall not
     be unreasonably withheld) of or in connection with any claim, action, suit,
     proceeding or investigation based in whole or in part on or arising in
     whole or in part out of the fact that such person is or was a director,
     officer, employee or fiduciary of Gelman or any of its subsidiaries,
     whether pertaining to any matter existing or occurring at or prior to the
     Effective Time and whether asserted or claimed prior to, or at or after the
     Effective Time ("Indemnified Liabilities"), and (ii) all Indemnified
     Liabilities based in whole or in part on, or arising in whole or in part
     out of, or pertaining to the Merger Agreement or the transactions
     contemplated thereby, in each case to the full extent a corporation is
     permitted under the MBCA to indemnify its own directors, officers,
     employees and fiduciaries, as the case may be (and the Surviving
     Corporation shall pay expenses in advance of the final disposition of any
     such action or proceeding to each Indemnified Party to the full extent
     permitted by law). Without limiting the foregoing, in the event that any
     such claim, action, suit, proceeding or investigation is brought against
     any Indemnified Party (whether arising before or after the Effective Time),
     (x) the Indemnified Parties may retain counsel satisfactory to them and
     Gelman (or them and the Surviving Corporation after the Effective Time),
     (y) Gelman (or after the Effective Time, the Surviving Corporation) shall
     pay all reasonable fees and expenses of such counsel for the Indemnified
     Parties promptly as statements therefor are received, and (z) Gelman (or
     after the Effective Time, the Surviving Corporation) will use all
     commercially reasonable efforts to assist in the vigorous defense of any
     such matter, provided that neither Gelman nor the Surviving Corporation
     shall be liable for any settlement of any claim effected without its
     written consent, which consent, however, shall not be unreasonably
     withheld. Any Indemnified Party wishing to claim indemnification, upon
     learning of any such claim, action, suit, proceeding or investigation,
     shall notify Gelman or, after the Effective Time, the
 
                                       42
<PAGE>   47
 
     Surviving Corporation (but the failure so to notify Pall shall not relieve
     it from any liability which it may have under the Merger Agreement except
     to the extent such failure prejudices Pall). The Indemnified Parties as a
     group may retain only one law firm to represent them with respect to each
     such matter unless there is, under applicable standards of professional
     conduct, a conflict on any significant issue between the positions of any
     two or more Indemnified Parties.
 
          Tax-Free Treatment of Merger.  Pall and Gelman will each use its
     commercially reasonable efforts to cause the Merger to be treated as a
     tax-free reorganization for federal, state and foreign income tax purposes.
 
          Post-Closing Combined Financial Results.  Pall will publish 30 days'
     post-Merger combined financial results of Pall and Gelman for the first
     full 30-day period following the closing of the Merger, within 20 days of
     the end of such period, in a form sufficient to satisfy the applicable
     pooling-of-interests accounting requirements for resale of Pall Shares by
     affiliates of Gelman. See "The Merger -- Resales of Pall Shares by
     Affiliates of Gelman."
 
TERMINATION, AMENDMENT AND WAIVER
 
     The Merger Agreement may be terminated by the mutual consent of the
parties, or at any time prior to the Closing Date, whether before or after
approval of the Merger Agreement by the stockholders of Gelman, as follows:
 
          (i) by Gelman (A) if the Merger is not consummated by October 15,
     1997, other than on account of delay or default on the part of Gelman; (B)
     if the Merger is enjoined by a final, unappealable court order of a U.S.
     court having jurisdiction not entered at the request or with the support of
     Gelman or any of its affiliates or associates; (C) if Gelman determines to
     enter into a qualifying Acquisition Transaction and Gelman has paid Pall
     $5.0 million in lieu of any other payments or penalties or the
     reimbursement of expenses incurred by Pall; (D) if Pall has breached any
     representation, warranty or covenant in any material respect and does not
     cure such default in all material respects within 30 days after written
     notice is given to Pall by Gelman; (E) if the Average Trading Price is less
     than $21.00 per share; or (F) if the Gelman stockholders' vote is not
     sufficient to approve the transactions contemplated by the Merger
     Agreement; or
 
          (ii) by Pall (W) if the Merger is not completed by October 15, 1997,
     other than on account of delay or default on the part of Pall; (X) if the
     Merger is enjoined by a final, unappealable court order of a U.S. court
     having jurisdiction not entered at the request or with the support of Pall
     or any of its affiliates or associates; (Y) if Gelman has breached any
     representation, warranty or covenant in any material respect, and does not
     cure such default in all material respects within 30 days after written
     notice is given to Gelman by Pall; or (Z) if Gelman's stockholders' vote is
     not sufficient to approve the transactions contemplated by the Merger
     Agreement.
 
     The Merger Agreement may not be amended except by action taken by the
parties' respective Boards of Directors or duly authorized committees thereof
and then only by an instrument in writing signed on behalf of each of the
parties to the Merger Agreement and in compliance with applicable law.
 
                                       43
<PAGE>   48
 
                            PRO FORMA FINANCIAL DATA
 
     The following unaudited pro forma combined condensed financial statements
give effect to the Merger as of November 2, 1996 on a pooling-of-interests
basis. The pro forma combined consolidated balance sheet combines the
consolidated balance sheet of Pall at November 2, 1996 with the consolidated
balance sheet of Gelman at October 31, 1996. The pro forma combined condensed
statements of earnings for the fiscal years ended July 30, 1994, July 29, 1995
and August 3, 1996, and the quarters ended November 2, 1996, and October 28,
1995, combine Pall's historical consolidated statement of earnings for each of
such periods then ended with Gelman's historical consolidated statement of
earnings for each of Gelman's three fiscal years in the period ended July 31,
1996, and the quarters ended October 31, 1996, and October 31, 1995.
 
     The pro forma combined condensed statements of earnings are not necessarily
indicative of the operating results which would have been achieved had Pall and
Gelman been combined during such periods and should not be construed as
representative of future operations.
 
     These pro forma combined condensed financial statements should be read in
conjunction with the historical consolidated financial statements and the notes
thereto of Pall and Gelman which are incorporated by reference in this Proxy
Statement-Prospectus.
 
                                       44
<PAGE>   49
 
                                PALL CORPORATION
 
              UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
 
<TABLE>
<CAPTION>
                                                              AS OF NOVEMBER 2, 1996
                                               -----------------------------------------------------
                                                    HISTORICAL
                                               --------------------    PRO FORMA          PRO FORMA
                                                  PALL      GELMAN    ADJUSTMENTS          COMBINED
                                               ----------   -------   -----------         ----------
                                                                  (IN THOUSANDS)
<S>                                            <C>          <C>       <C>                 <C>
                                               ASSETS
Current assets:
  Cash and cash equivalents..................  $   11,874   $ 8,787     $18,913(1)(2)     $   39,574
  Short-term investments.....................      74,900        --                           74,900
  Accounts receivable, net...................     206,418    25,655                          232,073
  Inventories................................     209,360    11,037       2,824(3)           223,221
  Deferred income taxes......................      16,500     1,122                           17,622
  Prepaids and other current assets..........      25,314     3,485                           28,799
                                               ----------   -------     -------           ----------
Total current assets.........................     544,366    50,086      21,737              616,189
Property, plant and equipment................     777,091    76,371                          853,462
Less: Accumulated depreciation and
  amortization...............................     301,843    42,135                          343,978
                                               ----------   -------     -------           ----------
Property, plant and equipment, net...........     475,248    34,236                          509,484
Other assets.................................     139,085     2,050                          141,135
                                               ----------   -------     -------           ----------
Total assets.................................  $1,158,699   $86,372     $21,737           $1,266,808
                                               ==========   =======     =======           ==========
                                LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Notes payable..............................  $  119,977   $    --                       $  119,977
  Accounts payable...........................      49,531     5,134                           54,665
  Accrued liabilities........................      81,656     6,829                           88,485
  Income taxes...............................       7,556        --     $   988(3)             8,544
  Current portion of long-term debt..........      16,360       159                           16,519
  Dividends payable..........................      14,104        --                           14,104
                                               ----------   -------     -------           ----------
Total current liabilities....................     289,184    12,122         988              302,294
Long-term debt, net of current portion.......      47,004     7,809                           54,813
Deferred income taxes........................      37,542       670                           38,212
Other non-current liabilities................      39,447     2,720                           42,167
                                               ----------   -------     -------           ----------
Total liabilities............................     413,177    23,321         988              437,486
Stockholders' equity:
  Share capital..............................      65,504    38,796       2,520(2)           106,820
  Retained earnings..........................     733,358    25,174       3,109(1)(3)        761,641
  Treasury stock.............................     (47,361)       --      15,120(2)           (32,241)
  Foreign currency translation adjustment....       6,749      (769)                           5,980
  Minimum pension liability adjustment.......      (4,645)       --                           (4,645)
  Stock option loans.........................      (8,085)     (150)                          (8,235)
  Cumulative unrealized gain on
     investments.............................           2        --                                2
                                               ----------   -------     -------           ----------
Total stockholders' equity...................     745,522    63,051      20,749              829,322
                                               ----------   -------     -------           ----------
Total liabilities and stockholders' equity...  $1,158,699   $86,372     $21,737           $1,266,808
                                               ==========   =======     =======           ==========
</TABLE>
 
        See Notes to Pro Forma Combined Condensed Financial Statements.
 
                                       45
<PAGE>   50
 
                                PALL CORPORATION
 
         UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENTS OF EARNINGS
 
<TABLE>
<CAPTION>
                                                   FOR THE QUARTER ENDED NOVEMBER 2, 1996
                                         -----------------------------------------------------------
                                              HISTORICAL
                                         --------------------       PRO FORMA              PRO FORMA
                                           PALL       GELMAN      ADJUSTMENTS(4)           COMBINED
                                         --------     -------     --------------           ---------
                                                    (IN THOUSANDS EXCEPT PER SHARE DATA)
<S>                                      <C>          <C>         <C>                      <C>
STATEMENT OF EARNINGS DATA:
Net sales..............................  $207,456     $28,335                              $ 235,791
Cost of sales..........................    82,983      15,265                                 98,248
Selling, general and administrative
  expenses.............................    83,362      10,486                                 93,848
Research and development...............    11,680       1,458                                 13,138
Interest expense, net..................       630         128                                    758
Merger-related expenses................        --       3,911                                  3,911
                                         --------     -------                               --------
Total costs and expenses...............   178,655      31,248                                209,903
                                         --------     -------                               --------
Earnings before income taxes...........    28,801      (2,913)                                25,888
Income taxes...........................    (8,641)         37                                 (8,604)
                                         --------     -------                               --------
Net earnings...........................  $ 20,160     $(2,876)                             $  17,284
                                         ========     =======                               ========
EARNINGS PER SHARE:
Net earnings per share.................     $0.18      $(0.36)                                 $0.14
Average number of shares outstanding...   115,045       7,974          2,963(2)(5)           125,982
</TABLE>
 
<TABLE>
<CAPTION>
                                                   FOR THE QUARTER ENDED OCTOBER 28, 1995
                                         -----------------------------------------------------------
                                                                    PRO FORMA              PRO FORMA
                                           PALL       GELMAN      ADJUSTMENTS(4)           COMBINED
                                         --------     -------     --------------           ---------
                                                    (IN THOUSANDS EXCEPT PER SHARE DATA)
<S>                                      <C>          <C>         <C>                      <C>
STATEMENT OF EARNINGS DATA:
Net sales..............................  $191,550     $27,335                              $ 218,885
Cost of sales..........................    75,554      13,493                                 89,047
Selling, general and administrative
  expenses.............................    78,551       9,287                                 87,838
Research and development...............    10,928       1,491                                 12,419
Interest expense, net..................       791         154                                    945
                                         --------     -------                               --------
Total costs and expenses...............   165,824      24,425                                190,249
                                         --------     -------                               --------
Earnings before income taxes...........    25,726       2,910                                 28,636
Income taxes...........................    (7,974)       (988)                                (8,962)
                                         --------     -------                               --------
Net earnings...........................  $ 17,752     $ 1,922                              $  19,674
                                         ========     =======                               ========
EARNINGS PER SHARE:
Net earnings per share.................     $0.16       $0.24                                  $0.16
Average number of shares outstanding...   114,446       8,145          2,670(2)(5)           125,261
</TABLE>
 
        See Notes to Pro Forma Combined Condensed Financial Statements.
 
                                       46
<PAGE>   51
 
                                PALL CORPORATION
 
         UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENTS OF EARNINGS
 
<TABLE>
<CAPTION>
                                                     FOR THE FISCAL YEAR ENDED AUGUST 3, 1996
                                               ----------------------------------------------------
                                                   HISTORICAL
                                               -------------------    PRO FORMA          PRO FORMA
                                                 PALL      GELMAN    ADJUSTMENTS          COMBINED
                                               --------   --------   -----------         ----------
                                                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                            <C>        <C>        <C>                 <C>
STATEMENT OF EARNINGS DATA:
Net sales....................................  $960,376   $112,057                       $1,072,433
Cost of sales................................   372,864     56,864     $   137(3)           429,865
Selling, general and administrative
  expenses...................................   338,726     39,645        (570)(1)          377,801
Research and development.....................    47,514      6,258                           53,772
Interest expense, net........................     3,418        607                            4,025
Pollution-related expense....................        --      2,800                            2,800
                                               --------   --------       -----           ----------
Total costs and expenses.....................   762,522    106,174        (433)             868,263
                                               --------   --------       -----           ----------
Earnings before income taxes.................   197,854      5,883         433              204,170
Income taxes.................................   (59,356)    (1,547)       (152)(1)(3)       (61,055)
                                               --------   --------       -----           ----------
Net earnings.................................  $138,498   $  4,336     $   281           $  143,115
                                               ========   ========       =====           ==========
EARNINGS PER SHARE:
Net earnings per share.......................     $1.21      $0.53                            $1.14
Average number of shares outstanding.........   114,839      8,255       2,696(2)(5)        125,790
</TABLE>
 
<TABLE>
<CAPTION>
                                                       FOR THE FISCAL YEAR ENDED JULY 29, 1995
                                                 ---------------------------------------------------
                                                     HISTORICAL
                                                 -------------------    PRO FORMA          PRO FORMA
                                                   PALL      GELMAN    ADJUSTMENTS         COMBINED
                                                 --------   --------   -----------         ---------
                                                        (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                              <C>        <C>        <C>                 <C>
STATEMENT OF EARNINGS DATA:
Net sales......................................  $822,823   $103,503                       $ 926,326
Cost of sales..................................   305,287     50,070     $  (405)(3)         354,952
Selling, general and administrative expenses...   301,686     36,634        (720)(1)         337,600
Research and development.......................    45,142      5,498                          50,640
Interest expense, net..........................     3,004      1,314                           4,318
                                                 --------   --------     -------            --------
Total costs and expenses.......................   655,119     93,516      (1,125)            747,510
                                                 --------   --------     -------            --------
Earnings before income taxes and cumulative
  effect of an accounting change...............   167,704      9,987       1,125             178,816
Income taxes...................................   (48,488)    (3,365)       (394)(1)(3)      (52,247)
                                                 --------   --------     -------            --------
Earnings before cumulative effect of an
  accounting change............................   119,216      6,622         731             126,569
Cumulative effect of an accounting change......      (780)        --                            (780)
                                                 --------   --------     -------            --------
Net earnings...................................  $118,436   $  6,622     $   731           $ 125,789
                                                 ========   ========     =======            ========
EARNINGS PER SHARE:
Earnings before cumulative effect of an
  accounting change............................     $1.04      $0.92                           $1.01
Cumulative effect of an accounting change......     (0.01)        --                           (0.01)
                                                 --------   --------                        --------
Net earnings per share.........................     $1.03      $0.92                           $1.00
                                                 ========   ========                        ========
Average number of shares outstanding...........   115,184      7,235       2,452(2)(5)       124,871
</TABLE>
 
        See Notes to Pro Forma Combined Condensed Financial Statements.
 
                                       47
<PAGE>   52
 
                                PALL CORPORATION
 
         UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENTS OF EARNINGS
 
<TABLE>
<CAPTION>
                                                       FOR THE FISCAL YEAR ENDED JULY 30, 1994
                                                 ---------------------------------------------------
                                                     HISTORICAL
                                                 -------------------    PRO FORMA          PRO FORMA
                                                   PALL      GELMAN    ADJUSTMENTS         COMBINED
                                                 --------   --------   -----------         ---------
                                                        (IN THOUSANDS EXCEPT PER SHARE DATA)
<S>                                              <C>        <C>        <C>                 <C>
STATEMENT OF EARNINGS DATA:
Net sales......................................  $700,848   $ 94,963                       $ 795,811
Cost of sales..................................   257,624     47,253     $  (336)(3)         304,541
Selling, general and administrative expenses...   261,289     33,607        (668)(1)         294,228
Research and development.......................    41,283      4,877                          46,160
Interest expense, net..........................     1,858      1,689                           3,547
Restructuring and other charges................     3,696         --                           3,696
                                                 --------    -------     -------            --------
Total costs and expenses.......................   565,750     87,426      (1,004)            652,172
                                                 --------    -------     -------            --------
Earnings before income taxes and extraordinary
  loss.........................................   135,098      7,537       1,004             143,639
Income taxes...................................   (36,176)    (2,600)       (351)(1)(3)      (39,127)
                                                 --------    -------     -------            --------
Earnings before extraordinary loss.............    98,922      4,937         653             104,512
Extraordinary loss.............................        --       (183)                           (183)
                                                 --------    -------     -------            --------
Net earnings...................................  $ 98,922   $  4,754     $   653           $ 104,329
                                                 ========    =======     =======            ========
EARNINGS PER SHARE:
Earnings before extraordinary loss.............  $   0.86   $   0.78                       $    0.84
Extraordinary loss.............................        --      (0.03)                             --
                                                 --------    -------                        --------
Net earnings per share.........................  $   0.86   $   0.75                       $    0.84
                                                 ========    =======                        ========
Average number of shares outstanding...........   115,678      6,307       2,230(2)(5)       124,215
</TABLE>
 
        See Notes to Pro Forma Combined Condensed Financial Statements.
 
                                       48
<PAGE>   53
 
                NOTES TO UNAUDITED PRO FORMA COMBINED CONDENSED
                              FINANCIAL STATEMENTS
 
1. The pro forma combined condensed financial statements have been adjusted for
   the following items and the related income tax computed at the federal
   statutory rate, which are directly attributable to the Merger and are
   expected to have a continuing impact on the merged operations: (a)
   elimination of Gelman's specific public company costs, including shareholder
   reporting, share registry and directors' fees, and (b) the employment
   agreements which were negotiated in connection with the Merger. See
   "Interests of Certain Persons in the Merger." Except as described above, the
   pro forma combined condensed financial statements do not reflect cost savings
   and synergies that are expected to result from the Merger. Although savings
   from synergies are expected, there can be no assurance any such savings will
   be realized.
 
2. The pro forma combined condensed financial statements for the periods
   presented reflect a sale of 720,000 Pall Shares from treasury prior to the
   Merger, as a condition to qualifying for pooling-of-interests accounting.
 
3. Pro forma adjustments have been made to conform the inventory accounting
   policies of Pall and Gelman. The impact of converting from the LIFO method of
   accounting for inventory to the FIFO method and the related income tax
   computed at the federal statutory rate is reflected in the respective
   statements of earnings and the balance sheet.
 
4. Pro forma adjustments are not reflected on the pro forma combined condensed
   statements of earnings for the quarters ended November 2, 1996, and October
   28, 1995 (except the average number of shares outstanding), as such
   adjustments would not be material.
 
5. The pro forma combined condensed financial statements assume the issuance of
   1.2394 Pall Shares for each Gelman Share (the Pro Forma Exchange Ratio). The
   actual number of Pall Shares to be issued will be determined by (i) the
   number of Gelman Shares outstanding at the Effective Time, and (ii) the
   Average Trading Price, as set forth in the Merger Agreement. Certain amounts
   in the historical financial statements of Gelman and Pall have been
   reclassified in these financial statements.
 
6. On a combined basis, there were no material transactions between Pall and
   Gelman for the periods presented.
 
7. It is expected that the combined company will incur charges to earnings,
   currently estimated to be about $15.0 million (including the $3.9 million
   reflected in the historical condensed statement of earnings of Gelman for the
   quarter ended October 31, 1996) to reflect transaction fees and costs
   incident to the Merger and "change of control" payments to certain executive
   officers of Gelman. See "Interests of Certain Persons in the Merger." Except
   as indicated in the preceding sentence, the estimated charge is not reflected
   in the pro forma combined financial statements. Savings from the Merger are
   expected to be in the range of $8.0 million to $10.0 million per annum,
   consisting of reductions in salaries, benefits and manufacturing costs. Such
   projected savings are not reflected in the pro forma combined financial
   statements. These amounts are preliminary and, therefore, are subject to
   change.
 
                                       49
<PAGE>   54
 
                            CERTAIN TAX CONSEQUENCES
 
GENERAL
 
     The following discussion of certain U.S. federal income tax consequences of
the Merger is included for general information purposes only and does not
purport to be a complete description of all potential tax consequences affecting
the decision whether to vote to approve and adopt the Merger Agreement. The
discussion applies only to Gelman stockholders who hold their Gelman Shares as
"capital assets" within the meaning of Section 1221 of the Code and does not
address all potential tax effects that may be relevant to Gelman stockholders
subject to special federal income tax treatment, including foreign persons,
insurance companies, tax-exempt organizations, retirement plans and persons who
acquired their Gelman Shares pursuant to the exercise of employee stock options
or otherwise as compensation. The following discussion does not address the
effect of applicable state, local or foreign tax laws.
 
     This summary is based on the Code, regulations and rulings in effect at the
date of this Proxy Statement-Prospectus, administrative rulings and practice and
judicial precedent, all of which are subject to change. Any such change, which
may or may not be retroactive, could alter the tax consequences discussed
herein. This discussion is also based on certain representations made by Pall,
Gelman and certain Gelman stockholders. If any of these representations is
inaccurate, the tax consequences of the Merger could differ from those described
herein.
 
FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER
 
     Godfrey & Kahn, S.C., counsel to Gelman, has rendered its written opinion
that, based on certain representations made by Pall, Gelman, and certain Gelman
stockholders, the Merger will constitute a reorganization under Section 368(a)
of the Code. Based on these representations, Godfrey & Kahn, S.C. has opined
that for federal income tax purposes:
 
          (1) No gain or loss will be recognized with respect to the Pall Shares
     received in the Merger;
 
          (2) The tax basis of the Pall Shares received by any Gelman
     stockholder in the Merger will be equal to the tax basis of the Gelman
     Shares exchanged therefor, reduced by any amount of basis allocable to
     fractional share interests for which cash is received;
 
          (3) The holding period of the Pall Shares received by Gelman
     stockholders in the Merger will include the holding period of the Gelman
     Shares exchanged therefor; and
 
          (4) The receipt of cash in lieu of a fractional Pall Share by any
     Gelman stockholder pursuant to the Merger Agreement will result in taxable
     capital gain or loss to such stockholder based on the difference between
     the amount of cash received by such stockholder and such stockholder's
     basis in such fractional share.
 
                           DESCRIPTION OF PALL SHARES
 
     The authorized capital stock of Pall consists of 500,000,000 shares of
Common Stock, par value $0.10 per share (the "Pall Shares"), of which
115,332,664 Pall Shares were issued and outstanding on the Record Date. The
rights of the holders of Pall Shares are governed by the Business Corporation
Law of the State of New York (the "NYBCL") and the Pall Certificate and By-Laws.
 
     Holders of Pall Shares are entitled to receive dividends when and as
declared by Pall's Board of Directors out of funds legally available therefor.
In the event of the liquidation, dissolution or winding up of Pall, holders of
Pall Shares would be entitled to share ratably in all corporate assets available
for distribution to shareholders. The holders of Pall Shares are not subject to
further calls or assessments by Pall and have no preemptive, subscription or
conversion rights. The Pall Shares are not redeemable.
 
                                       50
<PAGE>   55
 
VOTING RIGHTS
 
     The holders of Pall Shares are entitled to one vote per share on all
matters submitted to shareholders, and the holders of a majority of the
outstanding shares constitute a quorum at any meeting of shareholders.
 
     Directors of Pall are elected by a plurality of the votes cast at a meeting
of shareholders. The Pall Shares do not have cumulative voting rights;
therefore, the holders of a majority of the outstanding shares of Pall Shares
can elect all directors of Pall.
 
     In general, shareholder action other than the election of directors must be
authorized by a majority of the votes cast at a meeting of shareholders.
However, the NYBCL provides that certain extraordinary matters, such as a merger
or consolidation in which Pall is a constituent corporation, a sale or other
disposition of all or substantially all of Pall's assets, and the dissolution of
Pall, would require the vote of the holders of two-thirds of all outstanding
shares. Most amendments to the Pall Certificate require the vote of the holders
of a majority of all outstanding shares.
 
CLASSIFICATION OF THE BOARD
 
     The Pall By-Laws provide that the Board of Directors (currently comprised
of twelve persons) shall be divided into three classes of directors serving
staggered three-year terms, such classes being as nearly equal in number as
possible. As a result, one-third of Pall's Board of Directors is elected each
year.
 
FAIR PRICE PROVISIONS
 
     The Pall Certificate contains provisions designed to assure fair treatment
for all shareholders of Pall in certain "Business Combinations" involving a
"Related Party," defined as either the beneficial owner of 20% or more of the
securities entitled to vote in the election of Pall's directors, or an affiliate
of Pall who was the beneficial owner of 20% or more of such securities at any
time within the preceding five years. "Business Combination" is defined broadly
to include (i) any merger or consolidation of Pall or any of its subsidiaries
into or with a Related Person or its affiliates, (ii) any sale or other
disposition of more than 5% in value of the consolidated assets of Pall and its
subsidiaries to a Related Person or its affiliates, or more than 5% of the
assets of a Related Person to Pall or its subsidiaries, (iii) certain issuances
and transfers by Pall or its subsidiaries of their respective securities to a
Related Person, and (iv) any reclassification of securities, recapitalization,
reorganization or similar transaction which has the effect, directly or
indirectly, of increasing the proportionate share of the outstanding shares of
any class of equity security of Pall or its subsidiaries which is directly or
indirectly owned by a Related Person.
 
     Any Business Combination is subject to the prior approval of the holders of
not less than 85% of all outstanding Pall Shares unless certain fair price and
procedural requirements are met. Approval by the holders of not less than 85% of
the outstanding Pall Shares is also required to amend or repeal the provisions
in the Pall Certificate relating to Business Combinations, unless at least 75%
of certain "continuing" directors of Pall shall recommend such amendment or
repeal, in which case the approval of only the holders of a majority of the
outstanding Pall Shares would be required under the NYBCL to amend or repeal
such provisions.
 
     In addition, under Section 912 of the NYBCL, Pall may not engage in a
"business combination" (the statutory definition of which is similar to that in
the Pall Certificate) with an "interested shareholder" (the statutory definition
of which is similar to the definition of "Related Party" in the Pall
Certificate) for a period of five years after the interested shareholder becomes
such, unless the business combination or the purchase of stock by means of which
the interested shareholder becomes such is approved by Pall's Board of Directors
in advance of such stock purchase. After the five-year period, an interested
shareholder may engage in a business combination with Pall only if (i) the
business combination is approved after the five-year period by the affirmative
vote of the holders of a majority of the outstanding Pall Shares not
beneficially owned by the interested shareholder and its affiliates and
associates, or (ii) the value of the aggregate consideration to be paid by the
interested shareholder in connection with the business combination satisfies
certain formulas specified in the statute, and the interested shareholder, after
becoming such, has not acquired any additional
 
                                       51
<PAGE>   56
 
   
Pall Shares except as provided in the statute. See "Comparison of the Rights of
Holders of Gelman Shares and Holders of Pall Shares -- Anti-Takeover
Provisions."
    
 
COMMON SHARE PURCHASE RIGHTS
 
     On November 17, 1989, the Pall Board of Directors, pursuant to a favorable
advisory vote of Pall's shareholders, adopted a Shareholders Rights Plan and
pursuant thereto declared a dividend of one Common Share Purchase Right (a
"Right") for each outstanding Pall Share. The dividend distribution was made to
the holders of record of Pall Shares outstanding on December 1, 1989, and is
being made with respect to all Pall Shares issued thereafter (including the Pall
Shares issuable in the Merger) until the earliest to occur of the Distribution
Date (as defined below), the date on which the Rights are redeemed, and the
expiration date of the Rights (December 1, 1999, unless the expiration date is
extended).
 
   
     The "Distribution Date" is defined as the earlier to occur of (i) 10 days
following a public announcement that a person or group of affiliated or
associated persons (other than Pall, any subsidiary of Pall, any employee
benefit plan of Pall or of any subsidiary of Pall, or any entity holding Pall
Shares for or pursuant to the terms of such plan) has acquired beneficial
ownership of 20% or more of the outstanding Pall Shares (such person or group
being defined as the "Acquiring Person"), or (ii) 10 business days (or later
date as may be determined by action of Pall's Board prior to such time as any
person or group becomes an Acquiring Person) following the commencement of, or
announcement of an intention to make, a tender offer or exchange offer the
consummation of which would result in the beneficial ownership by a person or
group (other than Pall, any subsidiary of Pall, any employee benefit plan of
Pall or of any subsidiary of Pall, or any entity holding Pall Shares for or
pursuant to the terms of such plan) of 20% or more of such outstanding Pall
Shares.
    
 
   
     Until the Distribution Date, the Rights (i)will not be exercisable,
(ii)will be evidenced by the certificates for the Pall Shares registered in the
names of the holders thereof and not by separate Rights certificates, and (iii)
will be transferable with and only with the Pall Shares, and one Right will be
associated with each Pall Share, subject to adjustments in certain events. Each
Right, when it becomes exercisable, will entitle the registered holder to
purchase from Pall one Pall Share at a price of $60, which price reflects stock
splits declared from November 17, 1989, through the date of this Proxy
Statement-Prospectus, and is subject to further adjustment in certain events
(the "Purchase Price"). As soon as practicable following the Distribution Date,
separate certificates evidencing the Rights ("Rights Certificates") will be
mailed to holders of record of the Pall Shares as of the close of business on
the Distribution Date and such separate Right Certificates alone will evidence
the Rights.
    
 
   
     In the event that Pall is acquired by any person in a merger or other
business combination transaction, or 50% or more of its consolidated assets or
earning power are sold, proper provision will be made so that each holder of a
Right will thereafter have the right to receive, upon the exercise thereof at
the then current exercise price of the Right, that number of shares of common
stock of the acquiring company which at the time of such transaction will have a
market value of two times the exercise price of the Right. In the event that (i)
any person becomes an Acquiring Person, or (ii) during such time as there is an
Acquiring Person, there shall be a reclassification of securities or a
recapitalization or a reorganization of Pall or other transaction or series of
transactions involving Pall which has the effect of increasing by more than 1%
the proportionate share of the outstanding shares of any class of equity
securities of Pall or any of its subsidiaries beneficially owned by the
Acquiring Person, proper provision shall be made so that each holder of a Right,
other than Rights beneficially owned by the Acquiring Person (which will
thereafter be void), will thereafter have the right to receive upon exercise
that number of Pall Shares (or other securities, cash or property) having a
market value of two times the exercise price of the Right.
    
 
     At any time after any person becomes an Acquiring Person and prior to the
acquisition by a person or group (other than Pall, any employee benefit plan of
Pall or of any subsidiary of Pall, or any entity holding Pall Shares for or
pursuant to the terms of such plan) of beneficial ownership of 50% or more of
the outstanding Pall Shares (other than Pall Shares into which nonvoting
securities of Pall beneficially owned by such person or group can be converted),
the Board of Directors of Pall may exchange the Rights (other than Rights owned
 
                                       52
<PAGE>   57
 
by such person or group which will have become void), in whole or in part, at an
exchange ratio of one Pall Share per Right (subject to adjustment).
 
     At any time prior to such time as any person or group becomes an Acquiring
Person, the Board of Directors of Pall may redeem the Rights in whole, but not
in part, at a price of one-third of a cent per Right, which price reflects stock
splits declared from November 17, 1989, through the date of this Proxy
Statement-Prospectus and is subject to further adjustment in certain events (the
"Redemption Price"). The redemption of the Rights may be made effective at such
time, on such basis and with such conditions as the Board of Directors in its
sole discretion may establish. Immediately upon any redemption of the Rights,
the right to exercise the Rights will terminate and the only right of the
holders of Rights will be to receive the Redemption Price.
 
     The terms of the Rights may be amended by the Board of Directors of Pall
without the consent of the holders of the Rights, except that from and after
such time as any person becomes an Acquiring Person, no such amendment may
adversely affect the interests of the holders of the Rights.
 
     Until a Right is exercised, the holder thereof, as such, will have no
rights as a shareholder of Pall, including, without limitation, the right to
vote or to receive dividends.
 
                     COMPARISON OF THE RIGHTS OF HOLDERS OF
                    GELMAN SHARES AND HOLDERS OF PALL SHARES
 
     Upon consummation of the Merger, the stockholders of Gelman, a Michigan
corporation, will become shareholders of Pall, a New York corporation. Michigan
corporations are governed by the Michigan Business Corporation Act (the "MBCA")
and New York corporations are governed by the New York Business Corporation Law
(the "NYBCL").
 
   
     Differences between the MBCA and the NYBCL, and between the Gelman Articles
and By-Laws and the Pall Certificate and By-Laws, will result in several changes
in the rights of stockholders of Gelman when they become shareholders of Pall
pursuant to the Merger. The more significant of such changes are set forth
below. The discussion below is not meant to be relied upon as an exhaustive list
or a detailed description of such changes.
    
 
     Pursuant to Section 14 of the Exchange Act and the rules promulgated
thereunder (the "Proxy Rules"), Gelman and Pall are required to comply with
certain notice and disclosure requirements relating to the solicitation of
proxies in respect of stockholder meetings. As an issuer with securities listed
on the ASE and registered under Section 12 of the Exchange Act, Gelman is
required under the Exchange Act to publicly file with the Commission and the ASE
an annual report and other information. As an issuer with securities listed on
the NYSE and registered under Section 12 of the Exchange Act, Pall is required
under the Exchange Act to publicly file with the Commission and the NYSE an
annual report and other information.
 
SHARES
 
  GELMAN
 
     The Gelman Shares consist of a single class having equal rights, privileges
and power. The holder of
each outstanding Gelman Share has one vote per share with respect to all matters
submitted to a vote
   
of shareholders. The Gelman Articles provide, as permitted by the MBCA, that the
shareholders of Gelman may act without a meeting by written consent of the
holders of Gelman Shares having at least the minimum percentage of the vote
required by the MBCA for the proposed action.
    
 
     The number of authorized shares may be increased or decreased by the
affirmative vote of the holders of a majority of the Gelman Shares.
 
                                       53
<PAGE>   58
 
  PALL
 
   
     The authorized capital of Pall consists of a single class of common stock
(the Pall Shares) having equal rights, privileges and power. The holder of each
outstanding Pall Share has one vote per share with respect to all matters
submitted to a vote of shareholders. The shareholders of Pall may act without a
meeting by written consent only if such action is unanimous.
    
 
     The number of authorized shares may be increased or decreased by the
affirmative vote of the holders of a majority of the outstanding Pall Shares.
 
APPOINTMENT AND REMOVAL OF DIRECTORS
 
  GELMAN
 
     The Directors are divided into three classes and are elected to three-year
terms. Directors are elected at the annual stockholders' meeting, except that
vacancies may be filled by the affirmative vote of a majority of the remaining
directors. A director or the entire Board may be removed only for cause by a
vote of the shareholders (i.e., by a majority of the votes cast).
 
  PALL
 
     The Directors are divided into three classes and are also elected for
three-year terms. Directors are elected at the annual shareholders' meeting,
except that vacancies may be filled by the affirmative vote of a majority of the
remaining directors. A director or the entire Board may be removed only for
cause by a vote of the shareholders (i.e., by a majority of votes cast at a
meeting at which a quorum is present).
 
SPECIAL MEETINGS
 
  GELMAN
 
   
     Special meetings of the stockholders, for any purpose, (a) may be called by
the Chairman of the Board or the Board of Directors, (b) shall be called by the
President or Secretary upon written request (stating the purpose for which the
meeting is to be called) of the holders of a majority of all the Gelman Shares
entitled to vote at the meeting, and (c) may be ordered by the circuit court,
for good cause shown, upon application of the holders of not less than 10% of
all Gelman Shares entitled to vote at a meeting.
    
 
  PALL
 
   
     The Pall By-Laws provide that special meetings of the shareholders, for any
purpose, (i) may be called by the President (or, in case of the absence or
disability of the President, by any Vice President), (ii) must be called by the
President upon written request of a majority of the Directors then in office,
and (iii) must be called by the President upon written request of the holders of
50% of the issued and outstanding Pall Shares. At any special meeting, only such
business may be transacted which is related to the purpose or purposes set forth
in the required notice of meeting.
    
 
SHAREHOLDER APPROVALS
 
  GELMAN
 
   
     Under Michigan law, an amendment to the Gelman Articles requires an
affirmative vote of a majority of the outstanding Gelman Shares. Under the MBCA,
the Gelman Articles and the Gelman By-Laws, the Gelman By-Laws may be amended by
the affirmative vote thereon or by a majority of the Board of Directors then in
office. The stockholders may specify particular provisions of the Gelman By-Laws
which may not be altered or repealed by the Board of Directors.
    
 
  PALL
 
   
     Under the NYBCL, an amendment to the Pall Certificate requires an
affirmative vote of a majority of the outstanding Pall Shares. Under the NYBCL
and the Pall By-Laws, the Pall By-Laws may be amended by the
    
 
                                       54
<PAGE>   59
 
   
affirmative vote thereon of the holders of a majority of all outstanding Pall
Shares, or by a majority of the Board of Directors then in office. The Pall
By-Laws provide that the provisions of the By-Laws relating to (i) the calling
of special meetings of shareholders, (ii) the giving of notice of shareholder
meetings and (iii) shareholder meeting quorums may only be amended by the
shareholders and not by the Board of Directors. The provision of the Pall
By-Laws limiting the Board's ability to alter or repeal various By-Law
provisions may only be amended by the Board of Directors to the extent that the
sole effect of such amendment is to add to the list of By-Law provisions which
may only be amended by shareholders.
    
 
BOOKS AND RECORDS; INSPECTION; INFORMATION
 
  GELMAN
 
     Under the MBCA, any person who is a stockholder of record has the right to
examine, for any purpose reasonably related to his or her interest as a
stockholder, a list of the corporation's stockholders and its other books and
records. Stockholders are also entitled to receive, upon written request: (i) a
balance sheet of the corporation at the end of the preceding fiscal year, (ii)
an income statement for the fiscal year, and (iii) if prepared by the
corporation, its statement of source and application of funds for the fiscal
year.
 
  PALL
 
   
     Under the NYBCL, any person who is a shareholder of record for at least six
months immediately preceding his demand, or who is authorized in writing by
holders of at least five percent of any class of outstanding shares, has the
right during usual business hours to examine Pall's minutes of shareholders'
meetings and a list of the corporation's shareholders, and to make extracts
therefrom. Subject to the same qualifications, shareholders are also entitled to
receive, upon written request, an annual balance sheet and profit and loss
statement for the preceding fiscal year, and if any interim balance sheet or
profit and loss statement has been distributed to Pall's stockholders or
otherwise has been made available to the public, the most recent such interim
balance sheet or profit and loss statement.
    
 
DIVIDENDS AND DISTRIBUTIONS
 
  GELMAN
 
     Under the MBCA, no distribution to a stockholder (i.e., a dividend,
repurchase of stock or other payment to a stockholder in his or her capacity as
such) may be made if, after giving effect to the distribution, the corporation
would not be able to pay its debts as they become due in the usual course of
business, or the corporation's total assets would be less than the sum of its
total liabilities plus, unless the articles permit otherwise, the amount that
would be needed, if the corporation were to be dissolved at the time of the
distribution, to satisfy the preferential rights that are superior to those
receiving the distribution.
 
  PALL
 
     Under the NYBCL, a corporation may declare and pay dividends, or make other
distributions in cash or its bonds or its property, on its outstanding shares
except when the corporation is insolvent or would thereby be made insolvent, or
when the declaration, payment or distribution would be contrary to any
restrictions contained in the certificate of incorporation. The Pall Certificate
does not contain restrictions on the payment of dividends. In general, dividends
may be declared or paid and other distributions may be made out of surplus only,
defined in the NYBCL as the excess of a corporation's assets over its stated
capital. Thus, the net assets of the corporation remaining after such
declaration, payment or distribution shall at least equal the amount of its
stated capital which cannot be less than the aggregate par value of all issued
shares.
 
MINORITY SHAREHOLDER REMEDIES
 
  GELMAN
 
     The MBCA provides that a stockholder of a corporation may commence and
maintain a derivative proceeding (i.e., a lawsuit brought in the right of the
corporation to recover damages or other relief for the
 
                                       55
<PAGE>   60
 
   
benefit of the corporation) only if (i) the stockholder was a stockholder of the
corporation at the time of the act or omission complained of (or is a successor
by operation of law to one who was a stockholder at that time); (ii) the
stockholder fairly and adequately represents the interests of the corporation in
enforcing the corporation's right; (iii) the stockholder continues to be a
stockholder until the time of judgment, unless the failure to continue to be a
stockholder is the result of corporate action in which he did not acquiesce and
the derivative proceeding was commenced prior to the termination of his status
as a stockholder; and (iv) prior to commencing the proceeding, the stockholder
has made a written demand upon the corporation to take suitable action and
certain other conditions concerning such demand have been satisfied.
    
 
  PALL
 
     The NYBCL provides that a shareholder may commence and maintain a
derivative proceeding (i.e., a lawsuit brought in the right of a corporation to
procure a judgment in its favor) if the shareholder (i) is a shareholder at the
time of bringing the action, and (ii) was a shareholder at the time of the
transaction that is the subject of the action or that his shares or interest
therein devolved upon him by operation of law. The complaint must set forth with
particularity the shareholder's attempts to secure the initiation of such action
by the Board of Directors or the reasons for not making such effort.
 
DISSENTERS' RIGHTS
 
  GELMAN
 
     The MBCA does not grant dissenter's rights to a corporation's stockholders
(i.e., the right to receive a cash payment of the fair value of shares
determined by judicial appraisal) in the case of a stockholder-approved merger
when the shares of such corporation are listed on a national securities exchange
on the record date fixed to determine the stockholders entitled to receive
notice of and to vote at the meeting of stockholders at which the corporate
action is to be acted upon. Holders of Gelman Shares have no dissenter's rights
with respect to the Merger, inasmuch as the Gelman Shares were listed on the ASE
on the Record Date.
 
  PALL
 
     The NYBCL grants dissenters' rights to shareholders (i.e., the right to
cash payment of the fair value of one's shares determined by judicial appraisal)
in the case of a merger or consolidation, a sale of all or substantially all of
the corporation's assets, and (in the case of a shareholder whose shares are
adversely affected thereby) certain amendments to the certificate of
incorporation. Further, the NYBCL provides a procedure for the corporation to
make a written offer prior to the commencement of litigation (the "Offer") to
each dissenting shareholder to pay cash for his or her shares at a specified,
uniform price which the corporation considers to be their fair value. If the
effective date of the corporate action dissented from has occurred, the Offer
must be accompanied by an 80% advance payment of the Offer price to each
dissenting shareholder who has submitted his or her stock certificates. If the
effective date has not yet occurred, such advance payment shall be sent
forthwith upon its occurrence. If the corporation and a dissenting shareholder
agree upon a price to be paid for such dissenting shareholder's shares within 30
days after the making of the Offer, payment in full must be made by the
corporation within 60 days of the date on which the Offer was made or within 60
days of the effective date, whichever is later. If any dissenting shareholder
fails to agree with the corporation during the aforesaid 30-day period, or if an
Offer is not made within a specified period of time, only then may a proceeding
for judicial appraisal be commenced.
 
     In determining "fair value," the NYBCL does not exclude any element of
value arising from the accomplishment or expectation of the transaction in
question but mandates that the court should consider the nature of the
transaction and its effect on the corporation and its shareholders and the
concepts and methods of valuation then customary in the relevant financial and
securities markets.
 
                                       56
<PAGE>   61
 
INDEMNIFICATION OF DIRECTORS, OFFICERS AND EMPLOYEES
 
  GELMAN
 
     The MBCA generally provides that a corporation may, and in certain
circumstances, must, indemnify any person who is or was threatened with any
action, suit or proceeding by reason of the fact that he or she is or was a
director, officer, employee or agent of such corporation for expenses, judgments
or settlements actually and reasonably incurred by such person in connection
with suits and other legal actions or proceedings if such person acted in good
faith and in a manner he or she reasonably believed to be in or not opposed to
the best interests of the corporation and, with respect to any criminal actions
or proceeding, had no reasonable cause to believe their conduct was unlawful.
Unless indemnification is ordered by a court, the determination of whether a
director, officer, employee or agent has met the applicable standard of conduct
is made (i) by a majority vote of a quorum of the board consisting of directors
who are not parties or threatened to be made parties to the action, suit or
proceeding, (ii) if a quorum cannot be obtained under (i), by majority vote of a
committee duly designated by the board and consisting solely of two or more
directors not at the time parties or threatened to be made parties to the
action, suit or proceeding, (iii) by independent legal counsel in a written
opinion, (iv) by all independent directors who are not parties or threatened to
be made parties to the action, suit or proceeding, or (v) by the stockholders
(but shares held by directors, officers, employees or agents who are parties or
threatened to be made parties to the action, suit or proceeding may not be
voted). The MBCA also permits a corporation to advance expenses to directors,
officers and others upon a determination of eligibility, so long as the
requesting party undertakes to repay the amounts advanced if it is ultimately
determined that the party was not entitled to be indemnified. The aforementioned
provisions relating to indemnification and advancement of expenses are not
exclusive and a corporation may provide additional rights to those seeking
indemnification or advancement of expenses. The Gelman By-Laws provide that
Gelman shall indemnify directors and officers, and may indemnify employees and
agents, to the fullest extent authorized under the MBCA.
 
     The MBCA also permits a corporation to include in its articles of
incorporation a provision that would eliminate a director's monetary liability
for breaches of his or her fiduciary duty in a lawsuit by or on behalf of the
corporation or in an action by stockholders of the corporation, provided that
such provision may not eliminate or limit the liability of a director (i) for
any breach of the director's duty of loyalty, (ii) for acts or omissions not in
good faith or which involve intentional misconduct or a knowing violation of
law, (iii) for unlawful payments of dividends or stock purchases or redemptions,
or (iv) for any transaction from which the director derived an improper personal
benefit. The Gelman Articles contain such a provision providing for the
limitation of liability of directors for monetary damages for breach of
fiduciary duty as a director to the fullest extent permitted by the MBCA.
 
  PALL
 
     The NYBCL permits a corporation to indemnify its directors and officers for
judgments, fines and other expenses incurred by them in connection with an
action or proceeding other than an action by or in the right of the corporation
(a "derivative action"). In connection with any pending, threatened or completed
derivative action, the NYBCL permits such indemnification only against amounts
paid in settlement and reasonable expenses incurred. Indemnification is
permitted only if the director or officer has acted in good faith and in a
manner he or she reasonably believed to be in the best interests of the
corporation and, with respect to any criminal proceeding, had no reasonable
cause to believe his or her conduct was unlawful. Furthermore, the NYBCL
provides that expenses incurred in defending any action or proceeding may be
paid by the corporation in advance of the final disposition upon receipt of an
undertaking by or on behalf of the director or officer to repay the amount if
its ultimately determined that he or she is not entitled to be indemnified by
the corporation.
 
     The statutory provisions for indemnification and advancement of expenses
are not exclusive of any other rights to which those seeking indemnification or
advancement of expenses may be otherwise entitled, provided that such rights are
contained in the certificate of incorporation or by-laws or, when authorized
thereby, in a resolution of directors or shareholders or an agreement providing
for indemnification.
 
                                       57
<PAGE>   62
 
     The Pall By-Laws provide in effect that the corporation shall, to the
fullest extent permitted under the NYBCL, indemnify any person made or
threatened to be made a party to any action or proceeding, whether civil or
criminal and whether or not a derivative action, by reason of the fact that such
person is or was a director or officer of the corporation or served, at the
corporation's request, any other corporation or other enterprise in any
capacity. Indemnity shall be against judgments, fines, amounts paid in
settlement, and expenses, including attorneys' fees, actually and necessarily
incurred as a result of such action or proceeding. The NYBCL and the Pall
By-Laws provide further that no indemnification may be made to or on behalf of
any director or officer if a judgment or other final adjudication adverse to the
director or officer establishes that his acts were committed in bad faith or
were the result of active or deliberate dishonesty and were material to the
cause of action so adjudicated, or that he personally gained in fact a financial
profit or other advantage to which he was not legally entitled. In addition,
under the Pall By-Laws indemnification is not mandatory in connection with the
settlement of any pending or threatened action or proceeding, or any other
disposition thereof except a final adjudication, unless Pall has consented to
such settlement or other disposition.
 
     The principal effects of the indemnification provisions of the Pall By-Laws
are:
 
          (1) To provide for mandatory indemnification of directors and
     officers. In the absence of such by-law provisions, indemnification under
     New York law would be in the corporation's discretion unless a director or
     officer were successful, on the merits or otherwise, in the defense of the
     action or proceeding.
 
          (2) To provide for mandatory reimbursement of expenses, including
     attorneys' fees, incurred by a director or officer in defending an action
     or proceeding, upon receipt of an undertaking by or on behalf of such
     director or officer to repay such amount to the corporation to the extent
     that such director or officer is ultimately found not to be entitled to
     indemnification. In the absence of such by-law provisions, advances for
     expenses would be in the corporation's discretion.
 
          (3) To provide directors and officers with greater rights to indemnity
     in derivative actions. In the absence of such by-law provisions,
     indemnification could not be made in respect of (i) a threatened derivative
     action, or a pending derivative action which is settled or otherwise
     disposed of, or (ii) any claim, issue or matter as to which a director or
     officer shall have been adjudged liable to the corporation, unless or only
     to the extent that a court determines upon application that, in view of all
     the circumstances of the case, the director or officer is fairly and
     reasonably entitled to indemnity for such portion of the settlement amount
     and expenses as the court deems proper.
 
     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors or officers, Pall is aware that, in the opinion of
the Commission, such indemnification is against public policy as expressed in
the Securities Act and is therefore unenforceable. Under certain circumstances,
Pall might be required to submit to a court the question of whether
indemnification is permissible before it could indemnify directors for such
liabilities.
 
     The NYBCL permits a corporation to purchase and maintain insurance on
behalf of any director or officer of the corporation against any liability
asserted against him and incurred by him in such capacity, whether or not the
corporation would have the power to indemnify him against such liability. The
directors and officers of Pall are currently covered as insureds under
directors' and officers' liability insurance. Such insurance, subject to annual
renewal and certain rights of the insurer to terminate, provides an aggregate
maximum coverage of $15,000,000 for each loss and for each policy year for its
directors and officers and those of its subsidiaries against claims made during
the policy period.
 
ANTI-TAKEOVER PROVISIONS
 
  GELMAN
 
     Chapters 7A and 7B of the MBCA affect attempts to acquire control of
Michigan corporations. In general, under Chapter 7A, "business combinations"
(defined to include, among other transactions, certain mergers, dispositions of
assets or shares and recapitalizations) between covered Michigan business
corporations or their subsidiaries and an "interested shareholder" (defined as
the direct or indirect beneficial owner of at least 10% of the voting power of a
covered corporation's outstanding shares) can be consummated only if
 
                                       58
<PAGE>   63
 
approved by at least 90% of the votes of each class of the corporation's shares
entitled to vote and by at least two-thirds of such voting shares not held by
the interested shareholder or such shareholder's affiliates, unless five years
have elapsed after the person involved became an "interested shareholder" and
unless certain price and other conditions are satisfied. The Board may exempt
"business combinations" with a particular "interested shareholder" by resolution
adopted prior to the time the "interested shareholder" attained the status.
 
     In general, under Chapter 7B of the MBCA, an entity that acquires "Control
Shares" of a corporation may vote the Control Shares on any matter only if a
majority of all shares, and of all non-"Interested Shares," of each class of
shares entitled to vote as a class, approve such voting rights. Interested
Shares are shares owned by officers, employees or directors of the corporation
and the entity making the Control Shares acquisition. Control Shares are shares
that, when added to shares already owned by an entity, would give the entity
voting power in the election of directors over any of three thresholds:
one-fifth, one-third and a majority. The effect of the statute is to condition
the acquisition of voting control of a corporation on the approval of a majority
of the pre-existing disinterested shareholders. The Board of Directors has the
option of choosing to amend the corporation's by-laws before a Control Share
acquisition occurs to provide that Chapter 7B does not apply to the corporation.
 
  PALL
 
     The NYBCL includes a "business combination" type of takeover statute.
Business combination statutes generally prohibit a target corporation from
engaging in any "business combination" with an "interested shareholder" of the
target corporation for a set period of time following the date on which the
interested shareholder became such. An interested shareholder is typically
defined as the direct or indirect beneficial owner of a specified percentage of
the target corporation's outstanding shares. Business combination statutes are
intended primarily to prevent highly leveraged takeover bids in which the
target's assets are to be used as collateral for the interested shareholder's
debt financing of the takeover. Such takeover bids usually depend on the prompt
consummation of a merger or business combination, or the prompt sale of
corporate assets, after the acquisition of control of the target corporation.
 
     The business combination provisions of the NYBCL (in Section 912) are
summarized above under the caption "Description of Pall Shares -- Fair Price
Provisions."
 
     The New York business combination statute provides only limited regulation
of certain self-dealing transactions between a corporation and certain larger
shareholders. Moreover, wholly apart from the exceptions mentioned above, there
are a number of additional methods whereby even an interested shareholder can
benefit from a merger or sale of a corporation's assets during the first five
years after becoming an interested shareholder. For example, a shareholder,
prior to becoming an interested shareholder, may solicit proxies or shareholder
consents to change the composition of the board of directors, and the new board
which the shareholder has elected or helped to elect may approve a business
combination with the shareholder without the statutory delay. Also, an
interested shareholder may simply acquire control of the corporation, remove the
incumbent board and thereafter sell assets to third parties or even liquidate
the corporation, provided that any dividends or liquidating distributions are
made to all remaining shareholders pro rata, thus giving minority shareholders
the opportunity to realize their fair share of the true value of the assets of
the corporation.
 
     It should be noted that the New York business combination statute (i) does
not prohibit tender offers or in any way regulate when, how, at what price or by
whom they may be made, (ii) does not in any way delay the purchase of shares in
tender offers, (iii) does not interfere with the right of a shareholder, whether
"interested" or not, to mount a proxy contest or remove incumbent management,
(iv) does not prevent a shareholder from buying sufficient stock to replace
existing management immediately and (v) unlike certain other anti-takeover
statutes (e.g., Indiana's) does not eliminate or delay a shareholder's right to
vote on the election of directors or on any other corporate matters except
certain defined self-dealing transactions.
 
     In addition to a business combination statute, the NYBCL includes a
"greenmail" type of anti-takeover provision, designed to prevent a corporation
from buying at a premium price a corporate raider's interest in the
 
                                       59
<PAGE>   64
 
corporation. Pall may not purchase or agree to purchase more than 10% of its
stock from a shareholder for more than the market value thereof (as defined)
unless such purchase or agreement to purchase is approved by the affirmative
vote of the Board of Directors followed by the affirmative vote of the holders
of a majority of all outstanding shares entitled to vote thereon, or such
greater percentage as the corporation's certificate of incorporation may
require. The foregoing prohibition does not apply when the resident domestic
corporation offers to purchase shares from all holders of its stock, or with
respect to stock which the holder has owned beneficially for more than two
years.
 
     Federal legislation may have reduced the need for greenmail statutes, by
imposing a 50% nondeductible excise tax on any person who realizes gain from the
receipt of "greenmail" upon the sale of stock to the issuer thereof, whether or
not such gain is recognized for federal income tax purposes. A shareholder
receives greenmail with respect to any stock which he has held for less than two
years if (i) the shareholder, or someone acting in concert with or related to
the shareholder, made or threatened to make a public tender offer with respect
to such stock within the two-year period before the sale to the issuer, and (ii)
the shareholder receives consideration for the stock pursuant to an offer that
was not made on the same terms to all shareholders of the issuer.
 
     In addition, the division of Pall's Board of Directors into three classes
(see "-- Classification of the Board" above) may be deemed to be an
anti-takeover provision, since it would generally prevent a person who gains
voting control of Pall from electing a majority of the Board of Directors for up
to two years.
 
                             STOCKHOLDER PROPOSALS
 
     If the Merger is not effected, it is presently anticipated that Gelman will
hold its 1997 Annual Meeting of Stockholders sometime in December 1997.
Proposals of stockholders intended to be presented for action at the 1997 Annual
Meeting would have to be received at Gelman's principal executive offices not
later than September 26, 1997 to be considered for inclusion in Gelman's proxy
statement and form of proxy relating to that meeting. The terms and conditions
of Rule 14a-8 under the Exchange Act would apply to any such proposal.
 
                                 LEGAL MATTERS
 
     Certain legal matters in connection with the Merger will be passed upon for
Pall by Carter, Ledyard & Milburn, New York, N.Y. Certain legal matters in
connection with the Merger will be passed upon for Gelman by Godfrey & Kahn,
S.C., Milwaukee, Wisconsin. Heywood Shelley, a member of the firm of Carter,
Ledyard & Milburn, is a director of Pall, owns 3,500 Pall Shares and has options
exercisable within 60 days of the date hereof to purchase 33,333 Pall Shares.
 
                                    EXPERTS
 
     The consolidated financial statements of Pall Corporation and subsidiaries
incorporated in this Proxy Statement-Prospectus by reference to the Annual
Report on Form 10-K of Pall Corporation for the fiscal year ended August 3, 1996
have been so incorporated in reliance on the report of KPMG Peat Marwick LLP,
independent accountants, given on the authority of said firm as experts in
accounting and auditing.
 
     The consolidated financial statements and schedule of Gelman as of July 31,
1996 and 1995 and for each of the three years in the period ended July 31, 1996,
incorporated in this Proxy Statement-Prospectus by reference to the Annual
Report on Form 10-K of Gelman for the fiscal year ended July 31, 1996, have been
so incorporated in reliance on the report of Coopers & Lybrand L.L.P.,
independent accountants, given on the authority of that firm as experts in
accounting and auditing.
 
                                       60
<PAGE>   65
 
                                                                       EXHIBIT A
 
                               AGREEMENT AND PLAN
                             OF REORGANIZATION AND
                                     MERGER
 
                                  BY AND AMONG
                               PALL CORPORATION,
                         PALL ACQUISITION CORPORATION,
                                      AND
                              GELMAN SCIENCES INC.
<PAGE>   66
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                                                         PAGE
                                                                                         -----
<S>              <C>                                                                     <C>
ARTICLE I        THE MERGER............................................................    A-1
  Section 1.1    The Merger............................................................    A-1
  Section 1.2    Effective Time of the Merger..........................................    A-1
ARTICLE II       THE SURVIVING CORPORATION.............................................    A-1
  Section 2.1    Articles of Incorporation.............................................    A-1
  Section 2.2    By-Laws...............................................................    A-1
  Section 2.3    Effect of the Merger..................................................    A-2
  Section 2.4    Directors.............................................................    A-2
  Section 2.5    Officers..............................................................    A-2
ARTICLE III      CONVERSION OF SHARES..................................................    A-2
  Section 3.1    Conversion of Company Shares in the Merger............................    A-2
  Section 3.2    Consideration.........................................................    A-2
  Section 3.3    Exchange of Certificates..............................................    A-3
  Section 3.4    No Fractional Securities..............................................    A-4
  Section 3.5    Closing...............................................................    A-5
  Section 3.6    Closing of the Company's Transfer Books...............................    A-5
ARTICLE IV       REPRESENTATIONS AND WARRANTIES OF PARENT AND SUBSIDIARY...............    A-5
  Section 4.1    Organization and Qualifications.......................................    A-5
  Section 4.2    Capitalization........................................................    A-5
  Section 4.3    Subsidiaries..........................................................    A-6
  Section 4.4    Authority; Non-Contravention; Approvals...............................    A-6
  Section 4.5    Securities Reports and Financial Statements...........................    A-7
  Section 4.6    Absence of Undisclosed Liabilities....................................    A-7
  Section 4.7    Absence of Certain Changes or Events..................................    A-8
  Section 4.8    Absence of Litigation.................................................    A-8
  Section 4.9    Registration Statement and Proxy Statement............................    A-8
  Section 4.10   No Violations of Law..................................................    A-8
  Section 4.11   Compliance with Agreements............................................    A-9
  Section 4.12   Taxes.................................................................    A-9
  Section 4.13   Employee Benefit Plans; ERISA.........................................    A-9
  Section 4.14   Labor Controversies...................................................   A-10
  Section 4.15   Environmental Matters.................................................   A-11
  Section 4.16   Title to Assets.......................................................   A-12
  Section 4.17   Trademarks and Intellectual Property Compliance.......................   A-12
  Section 4.18   Material Agreements...................................................   A-12
  Section 4.19   Insurance.............................................................   A-12
  Section 4.20   Brokers and Finders...................................................   A-13
  Section 4.21   Certain Transactions..................................................   A-13
 
</TABLE>
    
 
                                       A-i
<PAGE>   67
 
   
<TABLE>
<CAPTION>
                                                                                         PAGE
                                                                                         -----
<S>              <C>                                                                     <C>
ARTICLE V        REPRESENTATIONS AND WARRANTIES OF THE COMPANY.........................   A-13
  Section 5.1    Organization and Qualification........................................   A-13
  Section 5.2    Capitalization........................................................   A-13
  Section 5.3    Subsidiaries..........................................................   A-14
  Section 5.4    Authority; Non-Contravention; Approvals...............................   A-14
  Section 5.5    Securities Reports and Financial Statements...........................   A-15
  Section 5.6    Absence of Undisclosed Liabilities....................................   A-15
  Section 5.7    Absence of Certain Changes or Events..................................   A-15
  Section 5.8    Absence of Litigation.................................................   A-16
  Section 5.9    Registration Statement and Proxy Statement............................   A-16
  Section 5.10   No Violation of Law...................................................   A-16
  Section 5.11   Compliance with Agreements............................................   A-16
  Section 5.12   Taxes.................................................................   A-17
  Section 5.13   Employee Benefit Plans; ERISA.........................................   A-17
  Section 5.14   Labor Controversies...................................................   A-19
  Section 5.15   Environmental Matters.................................................   A-19
  Section 5.16   Title to Assets.......................................................   A-19
  Section 5.17   Company Stockholders' Approval........................................   A-20
  Section 5.18   Trademarks and Intellectual Property Compliance.......................   A-20
  Section 5.19   Material Agreements...................................................   A-20
  Section 5.20   Insurance.............................................................   A-20
  Section 5.21   Brokers and Finders...................................................   A-20
  Section 5.22   Certain Transactions..................................................   A-20
  Section 5.23   Opinion of Financial Advisor..........................................   A-21
  Section 5.24   Pooling Matters.......................................................   A-21
  Section 5.25   Stock Appreciation Rights.............................................   A-21
  Section 5.26   Memtec Agreement......................................................   A-21
ARTICLE VI       CONDUCT OF BUSINESS PENDING THE MERGER................................   A-21
  Section 6.1    Conduct of Business by the Company Pending the Merger.................   A-21
  Section 6.2    Conduct of Business by Parent Pending the Merger......................   A-22
  Section 6.3    Control of the Company's Operations...................................   A-23
  Section 6.4    Control of Parent's Operations........................................   A-23
  Section 6.5    Acquisition Transactions..............................................   A-23
ARTICLE VII      ADDITIONAL AGREEMENTS.................................................   A-24
  Section 7.1    Access to Information.................................................   A-24
  Section 7.2    Stockholders' Approval................................................   A-24
  Section 7.3    Affiliates of the Company.............................................   A-24
  Section 7.4    Exchange Listing......................................................   A-25
  Section 7.5    Expenses and Fees.....................................................   A-25
  Section 7.6    Agreement to Cooperate................................................   A-25
  Section 7.7    Public Statements.....................................................   A-25
  Section 7.8    Options and Warrants; Benefit Plans...................................   A-26
  Section 7.9    Notification of Certain Matters.......................................   A-27
  Section 7.10   Directors' and Officers' Indemnification..............................   A-27
  Section 7.11   Joint Proxy Statement/Prospectus and Registration Statement...........   A-27
  Section 7.12   Tax-Free Treatment of Merger..........................................   A-28
  Section 7.13   Early Publication.....................................................   A-28
</TABLE>
    
 
                                      A-ii
<PAGE>   68
 
   
<TABLE>
<CAPTION>
                                                                                         PAGE
                                                                                         -----
<S>              <C>                                                                     <C>
ARTICLE VIII     CONDITIONS............................................................   A-28
  Section 8.1    Conditions to Each Party's Obligation to Effect the Merger............   A-28
  Section 8.2    Additional Conditions to Obligation of the Company to Effect the         A-28
                   Merger..............................................................
  Section 8.3    Additional Conditions to Obligations of Parent and Subsidiary to         A-29
                   Effect the Merger...................................................
ARTICLE IX       TERMINATION, AMENDMENT AND WAIVER.....................................   A-31
  Section 9.1    Termination...........................................................   A-31
  Section 9.2    Effect of Termination.................................................   A-31
  Section 9.3    Amendment.............................................................   A-31
  Section 9.4    Waiver................................................................   A-31
ARTICLE X        GENERAL PROVISIONS....................................................   A-32
  Section 10.1   Non-Survival of Representations and Warranties........................   A-32
  Section 10.2   Notices...............................................................   A-32
  Section 10.3   Interpretation........................................................   A-32
  Section 10.4   Miscellaneous.........................................................   A-32
  Section 10.5   Counterparts..........................................................   A-33
  Section 10.6   Parties In Interest...................................................   A-33
  Section 10.7   Exhibits and Schedules................................................   A-33
  Section 10.8   Severability..........................................................   A-33
  Section 10.9   Definition of Knowledge...............................................   A-33
</TABLE>
    
 
LIST OF SCHEDULES
 
SCHEDULE 6.1  CAPITAL EXPENDITURES
 
                                      A-iii
<PAGE>   69
 
                           GLOSSARY OF DEFINED TERMS
 
"Acquisition Transactions" is defined in Section 6.5(a)
 
"Affiliate Agreements" is defined in Section 7.3
 
   
"Agreement" is defined in the Preamble on Page A-1
    
 
   
"APB 16" is defined in the third Whereas Clause on Page A-1
    
 
"ASR 135" is defined in Section 7.3
 
"change in control" is defined in Section 5.13(c)
 
"Closing" is defined in Section 3.5
 
"Closing Date" is defined in Section 3.5
 
   
"Code" is defined in the third Whereas Clause on Page A-1
    
 
   
"Company" is defined in the Preamble on Page A-1
    
 
"Company Affiliated Transaction" is defined in Section 5.22
 
"Company Certificates" is defined in Section 3.3(d)
 
"Company Common Stock" is defined in Section 3.1
 
"Company Disclosure Letter" is defined in the first paragraph of Article V
 
"Company Financial Statements" is defined in Section 5.5
 
"Company Material Adverse Effect" is defined in Section 5.1
 
"Company Options" is defined in Section 7.8(a)
 
"Company Permits" is defined in Section 5.10
 
"Company Plans" is defined in Section 5.13(a)
 
"Company Required Statutory Approvals" is defined in Section 5.4(c)
 
"Company SEC Reports" is defined in Section 5.5
 
"Company Stockholders' Approval" is defined in Section 7.2
 
"Company Warrants" is defined in Section 7.8(a)
 
"controlled group" is defined in Section 5.13(c)
 
"Effective Time" is defined in Section 1.2
 
"employee stock ownership plan" is defined in Section 5.13(f)
 
"Environmental Law" is defined in Section 4.15(b)
 
"ERISA" is defined in Section 4.13(a)
 
"Exchange Act" is defined in Section 4.5
 
"Exchange Agent" is defined in Section 3.3(a)
 
"Exchanged Options" is defined in Section 7.8(a)
 
"Exchanged Warrants" is defined in Section 7.8(a)
 
"Exchange Ratio" is defined in Section 3.2(a)
 
"fiduciaries" is defined in Section 4.13(c) and 5.13(d)
 
                                      A-iv
<PAGE>   70
 
"Fractional Share Payment" is defined in Section 3.4
 
"FTC" is defined in Section 7.6(b)
 
"Hazardous Substance" is defined in Section 4.15(c)
 
"HRS Act" is defined in Section 4.4(c)
 
"Indemnified Liabilities" is defined in Section 7.10(b)
 
"Indemnified Parties" is defined in Section 7.10(b)
 
"Intellectual Property Rights" is defined in Section 4.17
 
"IRS" is defined in Section 4.12
 
"ISO" is defined in Section 5.13(i)
 
"Joint Proxy Statement/Prospectus" is defined in Section 4.9
 
"MBCA" is defined in Section 1.1
 
   
"Merger" is defined in the first Whereas Clause on Page A-1
    
 
"Merger Consideration" is defined in Section 3.2(a)
 
"Merger Filing" is defined in Section 1.2
 
"Non-Converting Share" is defined in Section 3.1(b)
 
"Parent Average Trading Price" is defined in Section 3.2(b)
 
   
"Parent" is defined in the Preamble on Page A-1
    
 
"Parent Affiliated Transaction" is defined in Section 4.21
 
"Parent Common Stock" is defined in Section 3.1(b)
 
"Parent Disclosure Letter" is defined in the first paragraph of Article IV
 
"Parent Financial Statements" is defined in Section 4.5
 
"Parent Material Adverse Effect" is defined in Section 4.1
 
"Parent Permits" is defined in Section 4.10
 
"Parent Plans" is defined in Section 4.13(a)
 
"Parent Required Statutory Approvals" is defined in Section 4.4(c)
 
"Parent SEC Reports" is defined in Section 4.5
 
   
"pooling of interests" is defined in the third "Whereas" clause on page A-1
    
 
"Proxy Statement" is defined in Section 4.9
 
"Registration Statement" is defined in Section 4.9
 
"Rule 145" is defined in Section 7.3
 
"S-8" is defined in Section 7.8(a)
 
"SEC" is defined in Section 7.8(a)
 
"Securities Act" is defined in Section 4.4(c)
 
   
"Subsidiary" is defined in the Preamble on Page A-1
    
 
"subsidiary" is defined in Section 4.3
 
                                       A-v
<PAGE>   71
 
"Subsidiary Common Stock" is defined in Section 3.1(d)
 
"Surviving Corporation" is defined in Section 1.1
 
"Tax Return" is defined in Section 4.12(c)
 
"Taxes" is defined in Section 4.12(b)
 
"Trading Days" is defined in Section 3.2(b)
 
"to the Company's knowledge" is defined in Section 10.9
 
"to the Parent's knowledge" is defined in Section 10.9
 
"withdrawal liability" is defined in Sections 4.13(c) and 5.13(d)
 
                                      A-vi
<PAGE>   72
 
                AGREEMENT AND PLAN OF REORGANIZATION AND MERGER
 
   
     THIS AGREEMENT AND PLAN OF REORGANIZATION AND MERGER, made on October 27,
1996 (the "Agreement"), by and among PALL CORPORATION, a New York corporation
("Parent"), PALL ACQUISITION CORPORATION, a Michigan corporation and a
wholly-owned, direct subsidiary of Parent ("Subsidiary"), and GELMAN SCIENCES
INC., a Michigan corporation (the "Company").
    
 
   
                                  WITNESSETH:
    
 
     WHEREAS, the respective Boards of Directors of Parent and the Company have
each determined that the merger of Subsidiary with and into the Company (the
"Merger") is consistent with and in furtherance of the long-term business
strategy of Parent and the Company and is in the best interests of Parent and
the Company and their respective stockholders;
 
     WHEREAS, the respective Boards of Directors of Parent, Subsidiary and the
Company have each approved the Merger, upon the terms and subject to the
conditions set forth herein; and
 
     WHEREAS, Parent, Subsidiary and the Company intend that the Merger qualify
as a tax-free reorganization under the provisions of Section 368 of the Internal
Revenue Code of 1986, as amended (the "Code") and be treated as a pooling of
interests under Accounting Principles Board Opinion No. 16 ("APB16");
 
     NOW, THEREFORE, in consideration of the representations, warranties,
covenants and agreements contained herein, the parties hereto, intending to be
legally bound, agree as follows:
 
                                   ARTICLE I
 
                                   THE MERGER
 
     SECTION 1.1.  THE MERGER.  Upon the terms and subject to the conditions of
this Agreement, at the Effective Time (as defined in Section 1.2) in accordance
with the Michigan Business Corporation Act (the "MBCA"), Subsidiary shall be
merged with and into the Company and the separate corporate existence of
Subsidiary shall thereupon cease. The Company shall be the surviving corporation
in the Merger and is hereinafter sometimes referred to as the "Surviving
Corporation." The Surviving Corporation will be governed by the laws of the
State of Michigan as a direct subsidiary of Parent, wholly-owned except to the
extent that the holders of Company Options and Company Warrants (as hereinafter
defined) have declined to exchange the same for Exchanged Options or Exchanged
Warrants (as hereinafter defined) and have thereafter exercised such options or
warrants.
 
     SECTION 1.2.  EFFECTIVE TIME OF THE MERGER.  The Merger shall become
effective at such time (the "Effective Time") as shall be stated in a
Certificate of Merger, consistent with the terms of this Agreement, to be filed
with the Department of Commerce of the State of Michigan in accordance with the
MBCA (the "Merger Filing"). The Merger Filing shall be made simultaneously with
or as soon as practicable after the Closing (as defined in Section 3.5) of the
transactions contemplated by this Agreement.
 
                                   ARTICLE II
 
                           THE SURVIVING CORPORATION
 
     SECTION 2.1.  ARTICLES OF INCORPORATION.  The Articles of Incorporation of
the Surviving Corporation shall be amended and restated at and as of the
Effective Time to read as did the Articles of Incorporation of the Subsidiary
immediately prior to the Effective Time (except that the name of the Surviving
Corporation shall be such name, including the name "Gelman", as Parent shall
specify), until duly amended further in accordance with the terms thereof and
the MBCA.
 
     SECTION 2.2.  BY-LAWS.  The By-laws of the Surviving Corporation shall be
amended and restated at and as of the Effective Time to read as did the By-Laws
of the Subsidiary immediately prior to the Effective Time (except that the name
of the Surviving Corporation shall be such name, including the name "Gelman",
 
                                       A-1
<PAGE>   73
 
as Parent shall specify), until duly amended further in accordance with the
terms thereof, the Articles of Incorporation of the Surviving Corporation and
the MBCA.
 
     SECTION 2.3.  EFFECT OF THE MERGER.  At the Effective Time, the effect of
the Merger shall be as provided in this Agreement and the applicable provisions
of the MBCA. Without limiting the generality of the foregoing, and subject
thereto, at the Effective Time, except as otherwise provided herein, all the
property, rights, privileges, powers and franchises of Subsidiary and the
Company shall vest in the Surviving Corporation, all debts, liabilities and
duties of Subsidiary and the Company shall become the debts, liabilities and
duties of the Surviving Corporation in the same manner as if the Surviving
Corporation had itself incurred them, and the separate corporate existence of
the Company with all its rights, privileges, immunities, powers and franchises
shall continue unaffected by the Merger, except as set forth herein.
 
     SECTION 2.4.  DIRECTORS.  From and after the Effective Time, Eric Krasnoff,
Jeremy Hayward-Surry and Mary Ann Bartlett shall serve as the initial directors
of the Surviving Corporation to hold office in accordance with the Articles of
Incorporation and By-laws of the Surviving Corporation, until their successors
are duly elected or appointed.
 
     SECTION 2.5.  OFFICERS.  From and after the Effective Time, the following
individuals shall serve as the initial officers of the Surviving Corporation, in
each case until their respective successors are duly elected or appointed:
 
<TABLE>
<S>                                    <C>
Chairman and CEO:                      Eric Krasnoff
President and COO:                     Kim A. Davis
Vice President:                        Samuel Wortham
Secretary:                             Mary Ann Bartlett
Treasurer:                             Jeremy Hayward-Surry
</TABLE>
 
                                  ARTICLE III
 
                              CONVERSION OF SHARES
 
     SECTION 3.1.  CONVERSION OF COMPANY SHARES IN THE MERGER.  Subject to
Section 3.4 regarding fractional shares, at the Effective Time, by virtue of the
Merger and without any action on the part of any holder of any shares of the
Company's common stock, par value $0.10 per share ("Company Common Stock"):
 
     (a) Each share of Company Common Stock issued and outstanding immediately
prior to the Effective Time, other than Company Common Stock held in treasury by
the Company or any subsidiary of the Company, shall be converted in accordance
with Section 3.3 into the right to receive the Merger Consideration (as defined
in Section 3.2).
 
     (b) Each share of Company Common Stock held in treasury by the Company or
any subsidiary of the Company (each a "Non-Converting Share") immediately prior
to the Effective Time, if any, shall be canceled and extinguished without
conversion thereof into Common Stock (par value $0.10 per share) of Parent
("Parent Common Stock") or payment therefor.
 
     (c) At the Effective Time, by virtue of the Merger and without any action
on the part of Parent as sole stockholder of Subsidiary, all of the issued and
outstanding shares of common stock, no par value, of Subsidiary ("Subsidiary
Common Stock") shall be converted into the same number of shares of Common
Stock, par value $0.10 per share, of the Surviving Corporation as are converted
into the right to receive the Merger Consideration pursuant to Section 3.1(a)
hereof.
 
     (d) No share of Company Common Stock shall be deemed to be outstanding or
to have any rights other than those set forth in this Section 3.1 after the
Effective Time.
 
     SECTION 3.2.  CONSIDERATION.
 
     (a) The consideration to be issued to each holder of Company Common Stock
in the Merger ("Merger Consideration") will be that number of shares of Parent
Common Stock which is determined by multiplying the Exchange Ratio by the number
of shares of Company Common Stock held by such holder of Company
 
                                       A-2
<PAGE>   74
 
Common Stock on the Closing Date (as defined in Section 3.5). The "Exchange
Ratio" shall equal the number of shares of Parent Common Stock (together with
one right appurtenant to each such share under Parent's Shareholder Rights Plan
dated December 1, 1989) for each share of Company Common Stock determined as
follows:
 
          (i) if the Parent Average Trading Price is $27.96 per share or more,
     the Exchange Ratio shall be 1.1804 shares of Parent Common Stock for each
     share of Company Common Stock;
 
          (ii) if the Parent Average Trading Price is less than $27.96 per share
     but more than $25.29 per share, the Exchange Ratio shall be a number of
     shares of Parent Common Stock for each share of Company Common Stock equal
     to $33.00 divided by the Parent Average Trading Price;
 
          (iii) if the Parent Average Trading Price is $25.29 per share or less,
     the Exchange Ratio shall be 1.3047 shares of Parent Common Stock for each
     share of Company Common Stock, provided, however, that if the Parent
     Average Trading Price is less than $21.00 per share, the Company shall have
     the right to terminate this Agreement pursuant to Section 9.1(a)(vi).
 
     (b) For purposes hereof, the "Parent Average Trading Price" shall mean the
average of the closing sales prices of a share of Parent Common Stock, as
reported by New York Stock Exchange Consolidated Transactions, during the 30
"Trading Days" (which term shall mean a day on which the New York Stock Exchange
is open for business) preceding the third Trading Day before the meeting of the
Company's stockholders at which Company Stockholders' Approval is sought.
 
     (c) No fractional shares of Parent Common Stock shall be issued, and, in
lieu thereof, a Fractional Share Payment shall be made (as defined in Section
3.4).
 
     (d) The Merger Consideration shall be subject to equitable adjustment in
the event of any stock split, stock dividend, reverse stock split or other
change (other than pursuant to exercises of outstanding options) in the number
of shares of Parent Common Stock or Company Common Stock outstanding occurring
after the date hereof and prior to Closing.
 
     SECTION 3.3.  EXCHANGE OF CERTIFICATES.
 
     (a) From and after the Effective Time, all outstanding Company Common Stock
shall no longer be outstanding and shall automatically be canceled and retired
and shall cease to exist, and each holder of a certificate representing shares
of Company Common Stock shall cease to have any rights with respect thereto,
except the right to receive in exchange therefor, upon surrender thereof to a
bank or trust company designated by Parent and acceptable to the Company (the
"Exchange Agent"), a certificate or certificates representing the number of
whole shares of Parent Common Stock to which such holder is entitled pursuant to
Section 3.1 plus the Fractional Share Payment. Notwithstanding any other
provision of this Agreement, until holders or transferees of certificates
theretofore representing shares of Company Common Stock have surrendered them
for exchange as provided herein, no dividends or other distributions declared or
made after the Effective Time with respect to Parent Common Stock with a record
date after the Effective Time shall be paid with respect to any Parent Common
Stock represented by such certificates and no Fractional Share Payment shall be
made. Upon surrender of a certificate which immediately prior to the Effective
Time represented shares of Company Common Stock, there shall be paid to the
holder of such certificate by Parent, without interest, (i) promptly, the amount
of any Fractional Share Payment with respect to a fractional share of Parent
Common Stock to which such holder is entitled, (ii) except as provided in (iii),
below, the amount of dividends or other distributions (without interest) with a
record date after the Effective Time which theretofore became payable with
respect to whole shares of Parent Common Stock, and (iii) at the appropriate
payment date, the amount of dividends or other distributions, with a record date
after the Effective Time but prior to surrender and a payment date occurring
after surrender, payable with respect to such whole shares of Parent Common
Stock.
 
     (b) If any certificate for shares of Parent Common Stock are to be issued
in a name other than that in which the certificate for shares of Company Common
Stock surrendered in exchange therefor is registered, it shall be a condition of
such exchange that the certificate so surrendered shall be properly endorsed and
 
                                       A-3
<PAGE>   75
 
otherwise in proper form for transfer and the person requesting such exchange
shall have paid to Parent or the Exchange Agent any applicable transfer or other
taxes required by reason of such issuance.
 
     (c) As of the Effective Time, Parent shall deposit, or cause to be
deposited, with the Exchange Agent certificates representing the number of
shares of Parent Common Stock required to effect the exchanges referred to in
paragraph (a) above, and cash, for purposes of the Fractional Share Payment.
Parent shall thereafter from time to time deposit, or cause to be deposited,
with the Exchange Agent cash, for payment of any dividend or distributions in
respect of such shares of Parent Common Stock with a record date after the
Effective Time.
 
     (d) As soon as reasonably practicable after the Effective Time, the Parent
or the Surviving Corporation shall cause the Exchange Agent to mail to each
holder of record as of the Effective Time of a certificate or certificates that
immediately prior to the Effective Time represented outstanding shares of
Company Common Stock (the "Company Certificates"), whose shares were converted
into the right to receive shares of Parent Common Stock (i) a letter of
transmittal (which shall specify that delivery shall be effected, and risk of
loss and title to the Company Certificates shall pass, only upon delivery of the
Company Certificates to the Exchange Agent), and (ii) instructions for use in
effecting the surrender of the Company Certificates in exchange for certificates
representing shares of Parent Common Stock. Upon surrender of a Company
Certificate for cancellation to the Exchange Agent, together with a duly
executed letter of transmittal, the holder of such Company Certificate shall be
entitled to receive in exchange therefor a certificate representing that number
of whole shares of Parent Common Stock into which the shares of Company Common
Stock theretofore represented by the Company Certificates so surrendered shall
have been converted pursuant to the provisions of Section 3.1, and the Company
Certificates so surrendered shall be canceled. Notwithstanding the foregoing,
neither the Exchange Agent nor any party hereto shall be liable to a holder of
shares of Company Common Stock for any shares of Parent Common Stock or
dividends or distributions thereon delivered to a public official pursuant to
applicable abandoned property, escheat or similar laws.
 
     (e) Promptly following the date which is six (6) months after the Effective
Time, the Parent or the Surviving Corporation shall cause the Exchange Agent to
deliver to Parent all certificates (including certificates representing shares
of Parent Common Stock), property and other documents in its possession relating
to the transactions described in this Agreement. Thereafter, each holder of a
Company Certificate may surrender such Company Certificate to the Parent and
(subject to applicable abandoned property, escheat and similar laws) receive in
exchange therefor the shares of Parent Common Stock to which such person is
entitled, any dividends or distributions with respect to shares of Parent Common
Stock and any Fractional Share Payment, in each case without any interest
thereon. Notwithstanding the foregoing, none of the Exchange Agent, Parent,
Subsidiary, or the Surviving Corporation shall be liable to a holder of Company
Common Stock for any shares of Parent Common Stock delivered to a public
official pursuant to applicable abandoned property, escheat and similar laws.
 
     (f) In the event any Company Certificate shall have been lost, stolen or
destroyed, upon the making of an affidavit of that fact by the person claiming
such Company Certificate to be lost, stolen or destroyed, and the posting of a
bond by such person in such amount as Parent may direct as indemnity against any
claim that may be made against it or the Exchange Agent with respect to such
Company Certificate, the Exchange Agent, Parent or the Surviving Corporation, as
the case may be, shall issue in exchange for such lost, stolen or destroyed
Company Certificate, certificates representing the proper number of shares of
Parent Common Stock deliverable in respect thereof determined in accordance with
this Section 3.3, and cash, for the Fractional Share Payment and any other
dividends or distributions in respect of shares of Parent Common Stock with a
record date after the Effective Time.
 
     SECTION 3.4.  NO FRACTIONAL SECURITIES.  No certificates representing
fractional shares of Parent Common Stock shall be issued in the Merger and no
stock dividend, stock split or interest shall relate to any fractional security,
and such fractional share interests shall not entitle the owner thereof to vote
or to any other rights of a security holder. In lieu of any such fractional
shares, each holder of Company Common Stock, who would otherwise have been
entitled to receive a fractional share of Parent Common Stock upon surrender of
Company Certificates for exchange pursuant to this Article III, shall be
entitled to receive from the Exchange
 
                                       A-4
<PAGE>   76
 
Agent a cash payment (the "Fractional Share Payment") equal to the product of
(i) the fractional share interest to which such holder would otherwise be
entitled multiplied by (ii) the closing sale price of a share of Parent Common
Stock as reported by New York Stock Exchange Composite Transactions on the last
trading day immediately preceding the Effective Time.
 
     SECTION 3.5.  CLOSING.  The closing (the "Closing") of the transactions
contemplated by this Agreement shall take place at the offices of Carter,
Ledyard, Milburn, 2 Wall Street, New York, New York 10005 on the day of the
Company's Stockholders' Approval as such term is defined in Section 7.2, below,
or at such other time and place as Parent and the Company shall agree upon (the
date on which the Closing occurs is referred to in this Agreement as the
"Closing Date").
 
     SECTION 3.6.  CLOSING OF THE COMPANY'S TRANSFER BOOKS.  At the Effective
Time, the stock transfer books of the Company shall be closed and no transfer of
shares of Company Common Stock which were outstanding immediately prior to the
Effective Time shall thereafter be made. From and after the Effective Time, the
holders of Company Certificates evidencing ownership of shares of Company Common
Stock outstanding immediately prior to the Effective Time shall cease to have
any rights as stockholders of the Company, except as otherwise provided herein
or by law. If, after the Effective Time, subject to the terms and conditions of
this Agreement, Company Certificates formerly representing Company Common Stock
are presented to the Exchange Agent, Parent or Surviving Corporation, as the
case may be, they shall be canceled and exchanged for certificates representing
shares of Parent Common Stock and cash, for the Fractional Share Payment and any
other dividends or distributions in respect of shares of Parent Common Stock
with a record date after the Effective Time in accordance with this Article III.
 
                                   ARTICLE IV
 
            REPRESENTATIONS AND WARRANTIES OF PARENT AND SUBSIDIARY
 
     Except as set forth in the disclosure letter delivered to the Company by
Parent and the Subsidiary at or prior to the execution hereof (the "Parent
Disclosure Letter"), Parent and Subsidiary each represent and warrant to the
Company as of the date hereof as follows:
 
     SECTION 4.1.  ORGANIZATION AND QUALIFICATIONS.  Parent and Subsidiary are
corporations duly organized, validly existing and in good standing under the
laws of the States of New York and Michigan, respectively, and each has the
requisite corporate power and authority to own, lease and operate its assets and
properties and to carry on its business as it is now being conducted. Each of
Parent and Subsidiary is qualified to do business and is in good standing in
each jurisdiction in which the properties owned, leased or operated by it or the
nature of the business conducted by it makes such qualification necessary,
except where the failure to be so qualified and in good standing will not, when
taken together with all other such failures, have a material adverse effect on
the business, operations, properties, assets, condition (financial or other) or
results of operations of Parent, Subsidiary and Parent's other subsidiaries,
taken as a whole (a "Parent Material Adverse Effect"). True, accurate and
complete copies of Parent's Articles of Incorporation and By-Laws, as in effect
on the date hereof, including all amendments thereto, have heretofore been
delivered to the Company. (Whenever herein reference is made to a delivery
having been made to the Company, such delivery obligation shall be deemed to
have been satisfied by delivering to Godfrey & Kahn, the Company's counsel.)
Neither Parent nor Subsidiary is in violation of any of the provisions of their
respective Articles of Incorporation, By-Laws and/or other organizational
documents.
 
     SECTION 4.2.  CAPITALIZATION.
 
     (a) The authorized capital stock of Parent consists of 500,000,000 shares
of Parent Common Stock, par value $0.10 per share, of which 115,116,755 shares
were outstanding as of October 10, 1996. All of the issued and outstanding
shares of Parent Common Stock are, and all shares of Parent Common Stock to be
issued in connection with the Merger shall be, when issued, duly authorized and
validly issued, nonassessable and free of preemptive rights granted by Parent or
by applicable law.
 
                                       A-5
<PAGE>   77
 
     (b) The authorized capital stock of Subsidiary consists of 60,000 shares of
Subsidiary Common Stock, no par value of which 1,000 shares are issued and
outstanding and owned beneficially and of record by Parent.
 
     (c) Except as disclosed in the Parent SEC Reports (as defined in Section
4.5) and except as provided for in or contemplated by this Agreement, as of the
date hereof, there are (i) no outstanding subscriptions, options, calls,
contracts, commitments, understandings, restrictions, arrangements, rights or
warrants, including any right of conversion or exchange under any outstanding
security, instrument or other agreement and also including any rights plan or
other anti-takeover agreement, obligating Parent, Subsidiary or any other
subsidiary of Parent to issue, deliver or sell, or cause to be issued, delivered
or sold, additional shares of Parent Common Stock or obligating Parent,
Subsidiary or any other subsidiary of Parent to grant, extend or enter into any
such agreement or commitment, and (ii) no voting trusts, proxies or other
agreements or understandings to which Parent, Subsidiary or any other subsidiary
of Parent is a party or is bound with respect to the voting of any shares of
Parent Common Stock and, to the knowledge of Parent, there are no such trusts,
proxies, agreements or understandings by, between or among any of Parent's
stockholders with respect to any shares of Parent Common Stock.
 
     SECTION 4.3.  SUBSIDIARIES.  Each direct and indirect subsidiary of Parent,
domestic or foreign, including Subsidiary, is duly organized, validly existing
and in good standing, under the laws of its state, country or other jurisdiction
of incorporation or organization and has the requisite corporate power and
authority to own, lease and operate its assets and properties and to carry on
its business as it is now being conducted except where any failure would not
have a Parent Material Adverse Effect. Each subsidiary of Parent, including
Subsidiary, is qualified to do business and is in good standing, in each
jurisdiction, domestic or foreign, in which the properties owned, leased or
operated by it or the nature of the business conducted by it makes such
qualification necessary, except where the failure to be so qualified and in good
standing would not have a Parent Material Adverse Effect. As used in this
Agreement, the term "subsidiary" shall mean, when used with reference to Parent
or the Company, any corporation, partnership, joint venture or other entity
which Parent or the Company, as applicable, directly or indirectly, controls or
of which Parent or the Company, as applicable, (either acting alone or together
with its other subsidiaries) owns, directly or indirectly, 50% or more of the
stock or other voting interests, the holders of which are entitled to vote for
the election of a majority of the board of directors or any similar governing
body of such corporation, partnership, joint venture or other entity.
 
     SECTION 4.4.  AUTHORITY; NON-CONTRAVENTION; APPROVALS.
 
     (a) Parent and Subsidiary each have full corporate power and authority to
enter into this Agreement and, subject to the Parent Required Statutory
Approvals (as defined in Section 4.4(c)), to consummate the transactions
contemplated hereby. This Agreement has been approved by the Boards of Directors
of Parent and Subsidiary and by the sole stockholder of Subsidiary, and no other
corporate proceedings on the part of Parent or Subsidiary are necessary to
authorize the execution and delivery of this Agreement or the consummation by
Parent and Subsidiary of the transactions contemplated hereby. This Agreement
has been duly executed and delivered by each of Parent and Subsidiary, and,
assuming the due authorization, execution and delivery hereof by the Company,
constitutes a valid and legally binding agreement of each of Parent and
Subsidiary, enforceable against each of them in accordance with its terms,
except that such enforcement may be subject to (i) bankruptcy, insolvency,
reorganization, moratorium or other similar laws affecting or relating to
enforcement of creditors' rights generally, and (ii) general equitable
principles. Without limiting the foregoing, each of the covenants and
obligations of Parent set forth in Sections 6.2, 7.1, 7.3, 7.5, 7.6, 7.7, 7.9
and 7.11 is valid, legally binding and enforceable notwithstanding the absence
of approval of the Merger by the stockholders of Parent.
 
     (b) The execution and delivery of this Agreement by each of Parent and
Subsidiary does not, and the performance of this Agreement and the transactions
contemplated hereby by Parent and Subsidiary shall not, violate, conflict with
or result in a breach of any provision of, or constitute a default (or an event
which, with notice or lapse of time or both, would constitute a default) under,
or result in the termination of, or accelerate the performance required by, or
result in a right of termination or acceleration under, or result in the
creation of any lien, security interest, charge or encumbrance upon any of the
properties or assets of Parent or any of its subsidiaries, including Subsidiary,
under, any of the terms, conditions or provisions of (i) the respective
 
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Articles of Incorporation, By-Laws and/or other organizational documents of
Parent, Subsidiary or any of Parent's other subsidiaries, (ii) any statute, law,
ordinance, rule, regulation, judgment, decree, order, injunction, writ, permit
or license of any court or governmental authority, domestic or foreign,
applicable to Parent, Subsidiary or any of Parent's other subsidiaries or any of
their respective properties or assets, or (iii) any note, bond, mortgage,
indenture, deed of trust, license, franchise, permit, concession, contract,
lease or other instrument, obligation or agreement of any kind to which Parent,
Subsidiary or any of Parent's other subsidiaries is now a party or by which
Parent, Subsidiary or any of Parent's other subsidiaries or any of their
respective properties or assets may be bound. The consummation by Parent and
Subsidiary of the transactions contemplated hereby will not result in any
violation, conflict, breach, termination, acceleration or creation of liens
under any of the terms, conditions or provisions described in clauses (i)
through (iii) of the preceding sentence, subject (x) in the case of the terms,
conditions or provisions described in clause (ii) above, to obtaining (prior to
the Effective Time) the Parent Required Statutory Approvals, and (y) in the case
of the terms, conditions or provisions described in clause (iii) above, to
obtaining (prior to the Effective Time) consents required from lenders, lessors
or other third parties. Excluded from the foregoing sentences of this paragraph
(b) are such violations, conflicts, breaches, defaults, terminations,
accelerations or creations of liens, security interests, charges or encumbrances
that would not, in the aggregate, have a Parent Material Adverse Effect.
 
     (c) Except for (i) the filings by Parent and the Company required by the
Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the "HSR
Act"), (ii) the filing of the Registration Statement (as defined in Section 4.9)
with the SEC pursuant to the Securities Act of 1933, as amended (the "Securities
Act"), and the declaration of the effectiveness thereof by the SEC and filings
with various state blue sky authorities and any other required filings in other
jurisdictions to register or exempt the shares of Parent Common Stock issuable
pursuant hereto, (iii) the making of the Merger Filing with the Department of
Commerce of the State of Michigan in connection with the Merger, and (iv) any
other notifications required under anti-trust regulations of applicable
jurisdictions (the filings and approvals referred to in clauses (i) through (iv)
above are collectively referred to as the "Parent Required Statutory
Approvals"), no declaration, filing or registration with, or notice to, or
authorization, consent or approval of, any governmental or regulatory body or
authority, domestic or foreign, is necessary for the execution and delivery of
this Agreement by Parent or Subsidiary or the consummation by Parent or
Subsidiary of the transactions contemplated hereby, other than such
declarations, filings, registrations, notices, authorizations, consents or
approvals which, if not made or obtained, as the case may be, would not, in the
aggregate, have a Parent Material Adverse Effect, or affect Subsidiary's ability
to consummate the Merger.
 
     SECTION 4.5.  SECURITIES REPORTS AND FINANCIAL STATEMENTS.  Parent has
filed with the SEC all forms, statements (including proxy statements), reports
and documents (including all exhibits, amendments and supplements thereto)
required to be filed by it prior to the date hereof under each of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), the Securities Act and
the respective rules and regulations thereunder, all of which, as amended if
applicable, complied in all material respects with all applicable requirements
of the appropriate act and the rules and regulations thereunder (collectively,
the "Parent SEC Reports"). As of their respective dates, the Parent 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. The audited consolidated financial statements and unaudited interim
consolidated financial statements of Parent included in such reports
(collectively, the "Parent Financial Statements") have been prepared in
accordance with generally accepted accounting principles applied on a consistent
basis (except as may be indicated therein or in the notes thereto) and fairly
present the financial position of Parent and its subsidiaries as of the dates
thereof and the results of their operations and changes in financial position
for the periods then ended, subject, in the case of the unaudited interim
financial statements, to normal year-end and audit adjustments and any other
adjustments described therein.
 
     SECTION 4.6.  ABSENCE OF UNDISCLOSED LIABILITIES.  Except as disclosed in
the Parent SEC Reports, neither Parent nor any of its subsidiaries had at August
3, 1996, nor has incurred since that date, any liabilities or obligations
(whether absolute, accrued, contingent or otherwise) of any nature, except: (a)
liabilities,
 
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obligations or contingencies (i) which are accrued or reserved against in the
Parent Financial Statements or reflected in the notes thereto, or (ii) which
were incurred after August 3, 1996 and will not have a Parent Material Adverse
Effect; (b) liabilities, obligations or contingencies which (i) would not, in
the aggregate, have a Parent Material Adverse Effect, or (ii) have been
discharged or paid in full prior to the date hereof; and (c) liabilities and
obligations which are of a nature not required to be reflected in the
consolidated financial statements of Parent and its subsidiaries prepared in
accordance with generally accepted accounting principles consistently applied.
 
     SECTION 4.7.  ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as disclosed in
the Parent SEC Reports, since August 3, 1996, there has not been (a) any change
in the financial condition, results of operations or business of Parent or any
of its subsidiaries having, in the aggregate, a Parent Material Adverse Effect;
(b) any damage, destruction or loss (whether or not covered by insurance) with
respect to any assets of Parent or any of its subsidiaries having, in the
aggregate, a Parent Material Adverse Effect; (c) any change by Parent in its
accounting methods, principles or practices; (d) any revaluation by Parent of
any of its material assets in any material respect; (e) any entry by Parent or
any of its subsidiaries into any commitment or transactions material to Parent
and its subsidiaries, taken as a whole, other than this Agreement; or (f) any
declaration, setting aside or payment of any dividends or distributions in
respect of Parent Common Stock or any redemption, purchase or other acquisition
of any of its securities or any of the securities of any subsidiary of Parent
except for a regular quarterly cash dividend of Parent declared October 18, 1996
in the amount of 12 1/4 cents per share.
 
     SECTION 4.8.  ABSENCE OF LITIGATION.  Except as disclosed in the Parent SEC
Reports which, individually or in the aggregate, will not have a Parent Material
Adverse Effect, taken as a whole, (a) there is no claim of any kind, suit,
action, proceeding, litigation, arbitration, investigation or controversy
affecting Parent or any of its subsidiaries pending or, to the knowledge of
Parent, threatened; and (b) neither Parent nor any of its subsidiaries is
subject to any continuing order of, or written agreement or memorandum of
understanding with, or continuing material investigation by, any governmental
entity or authority, or any judgment, decree, injunction, rule or order of any
court, governmental department, commission, agency, instrumentality or
authority, or any arbitrator.
 
     SECTION 4.9.  REGISTRATION STATEMENT AND PROXY STATEMENT.  None of the
information supplied or to be supplied by Parent for inclusion in (a) the
Registration Statement on Form S-4 to be filed under the Securities Act with the
SEC by Parent and the Company in connection with the Merger for the purpose of
registering the Parent Common Stock and Exchanged Options and Exchanged Warrants
to be issued in connection with the Merger (the "Registration Statement"), or
(b) the proxy statement to be distributed in connection with the Company's
meeting of stockholders to vote upon this Agreement and the transactions
contemplated hereby (the "Proxy Statement" and, together with the prospectus
included in the Registration Statement, the "Joint Proxy Statement/Prospectus")
will, in the case of the Proxy Statement or any amendments thereof or
supplements thereto, at the time of the mailing of the Proxy Statement and any
amendments or supplements thereto, at the time of the meeting of stockholders of
the Company to be held in connection with the transactions contemplated by this
Agreement, and at the Effective Time, or, in the case of the Registration
Statement, as amended or supplemented, at the time it is declared effective by
the SEC, 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 were made,
not misleading. The Registration Statement and Joint Proxy Statement/Prospectus
shall comply in all material respects as to form and substance with the
requirements of the Securities Act, the Exchange Act and the rules and
regulations promulgated thereunder, except that no representation is made by
Parent with respect to information supplied by the Company for inclusion
therein.
 
     SECTION 4.10.  NO VIOLATIONS OF LAW.  Except as disclosed in the Parent SEC
Reports, neither Parent nor any of its subsidiaries is in violation of, or has
been given notice or been charged with any violation of, any domestic or foreign
law, statute, order, rule, regulation, ordinance, or judgment, including,
without limitation, any applicable environmental law, ordinance or regulation of
any governmental or regulatory body or authority, foreign or domestic, except
for violations which, in the aggregate, could not reasonably be expected to have
a Parent Material Adverse Effect. Parent and its subsidiaries have all permits,
licenses, franchises,
 
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variances, exemptions, orders and other governmental authorizations, consents
and approvals necessary to conduct their businesses as presently conducted
(collectively, the "Parent Permits"), except for permits, licenses, franchises,
variances, exemptions, orders, authorizations, consents and approvals the
absence of which, alone or in the aggregate, would not have a Parent Material
Adverse Effect. Parent and its subsidiaries are not in violation of the terms of
any Parent Permit, except for delays in filing reports or violations which,
alone or in the aggregate, would not have a Parent Material Adverse Effect.
 
     SECTION 4.11.  COMPLIANCE WITH AGREEMENTS.  Except as disclosed in the
Parent SEC Reports, Parent and each of its subsidiaries are not in breach or
violation of or in default in the performance or observance of any term or
provision of, and no event has occurred which, with notice or lapse of time or
action by a third party, could result in a default under (a) the Articles of
Incorporation or By-Laws of Parent or the Articles/Certificate of Incorporation
or By-Laws of any of its subsidiaries; or (b) any contract, commitment,
agreement, indenture, mortgage, loan agreement, note, lease, bond, license,
approval or other instrument to which Parent or any of its subsidiaries is a
party or by which any of them is bound or to which any of their property is
subject, which breaches, violations and defaults would have, in the aggregate, a
Parent Material Adverse Effect.
 
     SECTION 4.12.  TAXES.
 
     (a) Except as disclosed in the Parent SEC Reports, Parent and its
subsidiaries have (i) duly filed with the appropriate governmental authorities
all Tax Returns (as defined in Section 4.12(c)) required to be filed by them for
all periods ending on or prior to the date hereof, and such Tax Returns are
true, correct and complete in all material respects, and (ii) duly paid in full
all Taxes (as defined in Section 4.12(b)) due in connection with or with respect
to the filing of such Tax Returns and have paid all other Taxes as are due,
except such as are being contested in good faith by appropriate proceedings and
with respect to which Parent is maintaining reserves adequate for their payment.
Except as disclosed in the Parent SEC Reports, neither the Internal Revenue
Service (the "IRS") nor any other governmental entity or taxing authority or
agency is now asserting, either through audits, administrative proceedings,
court proceedings or otherwise, or, to the best of Parent's knowledge,
threatening to assert against Parent or any of its subsidiaries any deficiency
or claim for additional Taxes. Except as disclosed in the Parent SEC Reports,
neither Parent nor any of its subsidiaries has been granted any waiver of any
statute of limitations with respect to, or any extension of a period for the
assessment of, any Tax. Except as disclosed in the Parent SEC Reports, there are
no tax liens on any assets of Parent or any of its subsidiaries. Except as
disclosed in the Parent SEC Reports, neither Parent nor any of its subsidiaries
has received a ruling or entered into an agreement with the IRS or any other
governmental entity or taxing authority or agency that would have a Parent
Material Adverse Effect, taken as a whole, after the Effective Time. The
accruals and reserves for Taxes reflected in the Parent balance sheet reflected
in the latest Parent SEC Report are adequate to cover all Taxes accruable
through the date thereof (including Taxes being contested) in accordance with
generally accepted accounting principles.
 
     (b) For purposes of this Agreement, the term "Taxes" shall mean all taxes,
including, without limitation, income, gross receipts, excise, property, sales,
withholding, social security, occupation, use, service, service use, license,
payroll, franchise, transfer and recording taxes, fees and charges, windfall
profits, severance, customs, import, export, employment or similar taxes,
charges, fees, levies or other assessments imposed by the United States, or any
state, local or foreign government or subdivision or agency thereof, whether
computed on a separate, consolidated, unitary, combined or any other basis, and
such terms shall include any interest, fines, penalties or additional amounts
and any interest in respect of any additions, fines or penalties attributable or
imposed or with respect to any such taxes, charges, fees, levels or other
assessments.
 
     (c) For purposes of this Agreement, the term "Tax Return" shall mean any
return, report or other document or information required to be supplied to a
taxing authority in connection with Taxes.
 
     SECTION 4.13.  EMPLOYEE BENEFIT PLANS; ERISA.
 
     (a) Except as set forth in or referred to in the Parent SEC Reports, as of
the date hereof, Parent and its subsidiaries do not maintain or contribute to or
have any obligation or liability to or under any material employee benefit
plans, programs, arrangements or practices (such plans, programs, arrangements
or practices
 
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<PAGE>   81
 
of Parent and its subsidiaries being referred to as the "Parent Plans"),
including employee benefit plans within the meaning set forth in Section 3(3) of
the Employee Retirement Income Security Act of 1974, as amended ("ERISA"), or
other similar material arrangements for the provision of benefits. Neither
Parent nor its subsidiaries has any obligation to create any additional such
plan or to amend any such plan so as to increase benefits thereunder, except as
required under the terms of the Parent Plans, under existing collective
bargaining agreements or to comply with applicable law, and except as provided
in Section 7.8(b) or elsewhere in this Agreement.
 
     (b) Prior to the Closing, upon request by the Company, Parent will furnish
or make available to the Company a complete and accurate copy of each Parent
Plan (or a description of such Parent Plans, if the plans are not in writing)
and a complete and accurate copy of each material document prepared in
connection with each such Parent Plan, including, without limitation and where
applicable, a copy of (i) each trust or other funding arrangement, (ii) each
summary plan description and summary of material modifications, (iii) the most
recently filed IRS Form 5500 and related schedules, (iv) the most recently
issued IRS determination letter for each such Parent Plan, (v) the most recently
prepared actuarial report and financial statement in connection with each such
Parent Plan, and (vi) any other related documents as Company may reasonably
request.
 
     (c) Each Parent Plan has been operated in all respects in accordance with
the requirements of all applicable laws and all persons who participate in the
operation of such Parent Plans and all Parent Plan "fiduciaries" (within the
meaning of Section 3(21) of ERISA) have acted in accordance with the provisions
of all applicable laws, except where violations of such applicable laws would
not, individually or in the aggregate, have a Parent Material Adverse Effect,
taken as a whole. Parent and its subsidiaries have performed all obligations
required to be performed by any of them under, are not in any respect in default
under or in violation of, and Parent has no knowledge of any default or
violation by any party to, any Parent Plan, except where such failures, defaults
or violations would not, individually or in the aggregate, have a Parent
Material Adverse Effect, taken as a whole. No legal action, suit or claim is
pending or, to the knowledge of Parent, threatened with respect to any Parent
Plan (other than claims for benefits in the ordinary course) and, to the
knowledge of Parent, no fact or event exists that could give rise to any such
action, suit or claim. Neither Parent nor any of its subsidiaries has incurred
any material liability to the Pension Benefit Guaranty Corporation (other than
premiums payable to the Pension Benefit Guaranty Corporation in the ordinary
course) or any material "withdrawal liability" within the meaning of Section
4201 of ERISA.
 
     (d) Each Parent Plan that is intended to be qualified under Section 401(a)
of the Code or Section 401(k) of the Code has received a favorable determination
letter from the IRS that it is so qualified, and each trust established in
connection with any Parent Plan that is intended to be exempt from federal
income taxation under Section 501(a) of the Code is so exempt, and no fact or
event has occurred since the date of such determination letter from the IRS to
adversely affect the qualified status of any such Parent Plan or the exempt
status of any such trust.
 
     (e) To Parent's knowledge, there has been no non-exempt prohibited
transaction (within the meaning of Section 406 of ERISA or Section 4975 of the
Code) with respect to any Parent Plan. Parent and each of its subsidiaries has
not incurred any liability for any excise tax arising under Section 4972 or
4980B of the Code and, to the knowledge of Parent, no fact or event exists that
could give rise to any such liability except for liability which, singly or in
the aggregate, could not reasonably be expected to cause a Parent Material
Adverse Effect. All contributions, premiums or payments required to be made with
respect to any Parent Plan have been made on or before their due dates except
for any such contributions, premiums or payments the non-payment of which
collectively would not result in a Parent Material Adverse Effect so long as
late payment doesn't result in Parent Material Adverse Effect.
 
     SECTION 4.14.  LABOR CONTROVERSIES.  Except as set forth in the Parent SEC
Reports, (a) there are no material controversies pending or, to the knowledge of
Parent, threatened between Parent or its subsidiaries and any representatives of
any of their employees; (b) to the knowledge of Parent, there are no material
organizational efforts presently being made or threatened involving any of the
presently unorganized employees of Parent or its subsidiaries; (c) Parent and
its subsidiaries have, to the knowledge of Parent,
 
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complied in all material respects with all laws, foreign or domestic, relating
to the employment of labor, including, without limitation, any provisions
thereof relating to wages, hours, collective bargaining, civil rights,
administration of leave and rights under the Consolidated Omnibus Budget
Reconciliation Act of 1985 and the payment of social security and similar taxes;
and (d) no person has, to the knowledge of Parent, asserted that Parent or any
of its subsidiaries is liable in any material amount for any arrears of wages or
any taxes or penalties for failure to comply with any of the foregoing, except
for such controversies, organizational efforts, non-compliance and liabilities
which, singly or in the aggregate, could not reasonably be expected to cause a
Parent Material Adverse Effect.
 
     SECTION 4.15.  ENVIRONMENTAL MATTERS.
 
     (a) Except as set forth in the Parent Disclosure Letter delivered to the
Company by the Parent and the Subsidiary at or prior to the execution hereof,
(i) Parent and its subsidiaries have conducted their respective businesses in
compliance with all applicable Environmental Laws (as defined in Section
4.15(b)), including, without limitation, having all permits, licenses and other
approvals and authorizations necessary for the operation of their respective
businesses as presently conducted, (ii) none of the properties owned or leased
by Parent or any of its subsidiaries contain any Hazardous Substance (as defined
in Section 4.15(c)) as a result of any activity of Parent or any of its
subsidiaries or otherwise in amounts exceeding the levels permitted by all
applicable Environmental Laws, (iii) neither Parent nor any of its subsidiaries
has received any formal or informal notices, demand letters or requests for
information from any federal, state, local or foreign governmental entity or
third party indicating that Parent or any of its subsidiaries may be in
violation of, or liable under, any Environmental Law in connection with the
ownership or operation of their businesses, (iv) there are no civil, criminal or
administrative actions, suits, demands, claims, hearings, investigations or
proceedings pending or threatened against Parent or any of its subsidiaries
relating to any violation, or alleged violation, of any Environmental Law, (v)
no reports or notices have been submitted to or filed, or are required to be
submitted or filed, by Parent or any of its subsidiaries concerning the release
of any Hazardous Substance or the threatened or actual violation of any
Environmental Law, (vi) no Hazardous Substance has been disposed of, released or
transported in violation of any applicable Environmental Law on or from any
properties owned by Parent or any of its subsidiaries as a result of any
activity of Parent or any of its subsidiaries during the time such properties
were owned, leased or operated by Parent or any of its subsidiaries, or as a
result of any other cause, (vii) there have been no environmental
investigations, studies, audits, tests, reviews or other analyses regarding
compliance or noncompliance with any applicable Environmental Law arranged for,
conducted by or which are or were in the possession of, or the existence of
which is known to, Parent or its subsidiaries relating to the activities of
Parent or its subsidiaries, or conditions on any property owned, leased or
operated by Parent or its subsidiaries, (viii) there are no underground storage
tanks on, in or under any properties owned by Parent or any of its subsidiaries
and no underground storage tanks have been closed or removed from any of such
properties during the time such properties were owned, leased or operated by
Parent or any of its subsidiaries, (ix) there is no asbestos or asbestos
containing material present in any of the properties owned by Parent and its
subsidiaries and no asbestos has been removed from any of such properties during
the times such properties were owned, leased or operated by Parent or any of its
subsidiaries, and (x) neither Parent, its subsidiaries nor any of their
respective properties are subject to any material liabilities or expenditures
(fixed or contingent) relating to any suit, settlement, court order,
administrative order, regulatory requirement, judgment or claim asserted or
arising under any Environmental Law, except for violations of the foregoing
clauses (i) through (x) that, singly or in the aggregate, would not reasonably
be expected to have a Parent Material Adverse Effect.
 
     (b) For purposes of this Agreement, "Environmental Law" means any federal,
state, local or foreign law, statute, ordinance, rule, regulation, code,
license, permit, authorization, approval, consent, order, judgment, decree,
injunction, requirement or agreement with any governmental entity relating to
(i) the protection, preservation or restoration of the environment (including,
without limitation, air, water vapor, surface water, groundwater, drinking water
supply, surface land, subsurface land, plant and animal life or any other
natural resource) or to human health or safety, or (ii) the exposure to, or the
use, storage, recycling, treatment, generation, transportation, processing,
handling, labeling, production, release or disposal of Hazardous Substances, in
each case as amended and as in effect as of the date hereof. The term
Environmental Law
 
                                      A-11
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includes, without limitation, (x) the Federal Comprehensive Environmental
Response Compensation and Liability Act of 1980, the Superfund Amendments and
Reauthorization Act, the Federal Water Pollution Control Act of 1972, the
Federal Clean Air Act, the Federal Clean Water Act, the Federal Resource
Conservation and Recovery Act of 1976 (including the Hazardous and Solid Waste
Amendments thereto), the Federal Solid Waste Disposal and the Federal Toxic
Substances Control Act, the Federal Insecticide, Fungicide and Rodenticide Act,
the Federal Occupational Safety and Health Act of 1970, each as amended and as
in effect as of the date hereof, or any state counterpart thereof (and including
any state, local or foreign law relating to the subjects set forth in the
foregoing clauses (i) and (ii)), and (y) any common law or equitable doctrine
(including, without limitation, injunctive relief and tort doctrines such as
negligence, nuisance, trespass and strict liability) that may impose liability
or obligations for injuries, damages or penalties due to, or threatened as a
result of, the presence of, effects of or exposure to any Hazardous Substance.
 
     (c) For purposes of this Agreement, "Hazardous Substance" means any
substance presently listed, defined, designated or classified as hazardous,
toxic, radioactive, or dangerous, or otherwise regulated under any Environmental
Law. Hazardous Substance includes any substance to which exposure is regulated
by any government authority or any Environmental Law including, without
limitation, any toxic waste, pollutant, contaminant, hazardous substance, toxic
substance, hazardous waste, special waste, industrial substance or petroleum or
any derivative or by-product thereof, radon, radioactive material, asbestos or
asbestos containing material, urea formaldehyde foam insulation, lead or
polychlorinated biphenyls.
 
     SECTION 4.16.  TITLE TO ASSETS.  Parent and each of its subsidiaries has
good and marketable title to all their respective properties and assets, real
and personal, free and clear of all mortgages, liens, pledges, charges or
encumbrances of any nature whatsoever, except (a) liens for Taxes not yet due
and payable; (b) such imperfections in title and assessments and encumbrances,
if any, as are not material in character, amount or extent and do not materially
and adversely affect the value or interfere with the present use of the property
subject thereto or affected thereby, or otherwise materially impair the Parent's
present business operations; (c) as disclosed in the Parent SEC Reports; or (d)
mortgages incurred in the ordinary course of business, and except for such
matters which, singly or in the aggregate, could not reasonably be expected to
cause a Parent Material Adverse Effect. All leases under which Parent leases any
material real or personal property are in good standing, valid and effective in
accordance with their respective terms, and there is not, under any of such
leases, any existing default or event which with notice or lapse of time or both
would become a default other than defaults under such leases which in the
aggregate will not cause a Parent Material Adverse Effect.
 
     SECTION 4.17.  TRADEMARKS AND INTELLECTUAL PROPERTY COMPLIANCE.  Parent and
its subsidiaries own or have the right to use all of their patents, trademarks
(registered or unregistered), trade names, service marks, copyrights, other
proprietary intellectual property rights, applications therefor and licenses or
other rights in respect thereof (collectively, "Intellectual Property Rights")
without any conflict with the rights of others, except for such conflicts that
have not had and are not reasonably likely to have a Parent Material Adverse
Effect, and the consummation of the transactions contemplated hereby will not
alter or impair such rights in any material respect. To the knowledge of Parent,
no claims are pending by any person with respect to the ownership, validity,
enforceability or use of any such Intellectual Property Rights challenging or
questioning the validity or effectiveness of any of the foregoing which claims
could reasonably be expected to have a Parent Material Adverse Effect. To
Parent's knowledge, none of its or its subsidiaries' key technical personnel is
in violation of any term of any employment agreement, patent disclosure
agreement or any other contract or agreement relating to the relationship of any
such employee with it or its subsidiaries or any other party the result of which
has had or is reasonably likely to have a Parent Material Adverse Effect.
 
     SECTION 4.18.  MATERIAL AGREEMENTS.  Except for this Agreement, Parent has
no material contracts which are required to be filed as exhibits to the Parent
SEC Reports which have not been so filed.
 
     SECTION 4.19.  INSURANCE.  Except to the extent there would be no Parent
Material Adverse Effect, to Parent's knowledge, all of Parent's and its
subsidiaries' liability, theft, life, health, fire, title, worker's compensation
and other forms of insurance, surety bonds and umbrella policies, insuring
Parent and its subsidiaries and their directors, officers, employees,
independent contractors, properties, assets and businesses, are valid and in
full force and effect (without any premium past due or pending notice of
cancellation) and
 
                                      A-12
<PAGE>   84
 
are, in the reasonable judgment of Parent, adequate for the business of Parent
and its subsidiaries as now conducted, and there are no claims, singly or in the
aggregate, in excess of the limitations of coverage set forth in such policies.
Neither Parent nor any of its subsidiaries has knowledge of any fact indicating
that such policies will not continue to be available to Parent and its
subsidiaries upon substantially similar terms subsequent to the Effective Time.
The provision and/or reserves in the Parent Financial Statements are adequate
for any and all self insurance programs maintained by Parent or its
subsidiaries.
 
     SECTION 4.20.  BROKERS AND FINDERS.  Neither the Parent nor any of its
officers, directors or employees has employed any investment banker, broker or
finder other than Dillon Read & Co. Inc. or incurred any liability for any
investment banking fees, financial advisory fees, brokerage fees, commissions or
finder's fees in connection with the transactions contemplated hereby other than
to Dillon, Read & Co. Inc.
 
     SECTION 4.21.  CERTAIN TRANSACTIONS.  Since July 31, 1995 none of the
officers or directors of the Parent, the Subsidiary or of any of the Parent's
other subsidiaries and, to Parent's knowledge, none of their employees or the
employees of any of its subsidiaries is a party to any transaction with it or
any of its subsidiaries (other than for services as an employee, officer or
director and other than transactions between it and one or more of its direct or
indirect wholly owned subsidiaries or between such subsidiaries), including
without limitation, any contract, agreement or other arrangement (i) providing
for the furnishing of services to or by, (ii) providing for rental of real or
personal property to or from, or (iii) otherwise requiring payments to or from,
any such officer, director, affiliate or employee, any member of the family of
any such officer, director or employee or any corporation, partnership, trust or
other entity in which any such officer, director or employee has a substantial
interest or which is an affiliate of such officer, director or employee (a
"Parent Affiliated Transaction") other than transactions which, singly or in the
aggregate, would not have a Parent Material Adverse Effect.
 
                                   ARTICLE V
 
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY
 
     Except as set forth in the disclosure letter delivered by the Company at or
prior to the execution hereof to Parent (the "Company Disclosure Letter"), the
Company represents and warrants to Parent as of the date hereof as follows:
 
     SECTION 5.1.  ORGANIZATION AND QUALIFICATION.  The Company is a corporation
duly organized, validly existing and in good standing under the laws of the
State of Michigan and has the requisite corporate power and authority to own,
lease and operate its assets and properties and to carry on its business as it
is now being conducted. The Company is qualified to do business and is in good
standing, where applicable, in each jurisdiction in which the properties owned,
leased or operated by it or the nature of the business conducted by it makes
such qualification necessary, except where the failure to be so qualified and in
good standing will not, when taken together with all other such failures, have a
material adverse effect on the business, operations, properties, assets,
condition (financial or other) or results of operations of the Company and its
subsidiaries, taken as a whole (a "Company Material Adverse Effect"). True,
accurate and complete copies of the Company's Articles of Incorporation and
By-Laws, in each case as in effect on the date hereof, including all amendments
thereto, have heretofore been delivered to Parent. The Company is not in
violation of any of the provisions of its Articles of Incorporation or By-Laws.
 
     SECTION 5.2.  CAPITALIZATION.
 
     (a) The authorized capital stock of the Company consists of 15,000,000
shares of Company Common Stock and 500,000 shares of preferred stock. As of the
date hereof, 8,043,574 shares of Company Common Stock and no shares of preferred
stock were issued and outstanding. All of the issued and outstanding shares of
the Company's capital stock have been duly authorized and validly issued and are
fully paid, nonassessable and free of preemptive rights granted by the Company
or by applicable law.
 
     (b) Except as disclosed in the Company SEC Reports (as defined in Section
5.5), as of the date hereof, there are (i) no outstanding subscriptions,
options, calls, contracts, commitments, understandings, restrictions,
 
                                      A-13
<PAGE>   85
 
arrangements, rights or warrants, including any right of conversion or exchange
under any outstanding security, instrument or other agreement and also including
any rights plan or other anti-takeover agreement, obligating the Company or any
subsidiary of the Company to issue, deliver or sell, or cause to be issued,
delivered or sold, additional shares of the capital stock of the Company or
obligating the Company or any subsidiary of the Company to grant, extend or
enter into any such agreement or commitment, and (ii) no voting trusts, proxies
or other agreements or understandings to which the Company or any subsidiary of
the Company is a party or is bound with respect to the voting of any shares of
capital stock of the Company and, to the knowledge of the Company, there are no
such trusts, proxies, agreements or understandings by, between or among any of
the Company's stockholders with respect to Company Common Stock.
 
     SECTION 5.3.  SUBSIDIARIES.  Each direct and indirect subsidiary of the
Company is duly organized, validly existing and in good standing, under the laws
of its jurisdiction of incorporation or organization and has the requisite
corporate power and authority to own, lease and operate its assets and
properties and to carry on its business as it is now being conducted except
where any failure would not have a Company Material Adverse Effect. Each
subsidiary of the Company is qualified to do business, and is in good standing,
in each jurisdiction in which the properties owned, leased or operated by it or
the nature of the business conducted by it makes such qualification necessary,
except where the failure to be so qualified and in good standing would not have
a Company Material Adverse Effect. All of the outstanding shares of capital
stock of each corporate subsidiary of the Company have been duly authorized and
validly issued and are fully paid, nonassessable and free of preemptive rights
and are beneficially owned directly or indirectly by the Company, free and clear
of any liens, claims or encumbrances. There are no subscriptions, options,
warrants, rights, calls, contracts, voting trusts, proxies or other commitments,
understandings, restrictions or arrangements relating to the issuance, sale,
voting, transfer, ownership or other rights with respect to any shares of
capital stock of any subsidiary of the Company, including any right of
conversion or exchange under any outstanding security, instrument or agreement.
 
     SECTION 5.4.  AUTHORITY; NON-CONTRAVENTION; APPROVALS.
 
     (a) The Company has full corporate power and authority to enter into this
Agreement and, subject to the Company Stockholders' Approval (as defined in
Section 7.2 and the Company Required Statutory Approvals (as defined in Section
5.4(c)), to consummate the transactions contemplated hereby. This Agreement has
been approved by the Board of Directors of the Company, and no other corporate
proceedings on the part of the Company are necessary to authorize the execution
and delivery of this Agreement or, except for the Company Stockholders'
Approval, the consummation by the Company of the transactions contemplated
hereby. This Agreement has been duly executed and delivered by the Company, and,
assuming the due authorization, execution and delivery hereof by Parent,
constitutes a valid and legally binding agreement of the Company, enforceable
against the Company in accordance with its terms, except that such enforcement
may be subject to (i) bankruptcy, insolvency, reorganization, moratorium or
other similar laws affecting or relating to enforcement of creditors' rights
generally, and (ii) general equitable principles. Without limiting the
foregoing, each of the covenants and obligations of the Company set forth in
Sections 6.1, 6.5, 7.1, 7.2, 7.3, 7.5, 7.6, 7.7, 7.9 and 7.11 is valid, legally
binding and enforceable notwithstanding the absence of the Company Stockholders'
Approval.
 
     (b) The execution and delivery of this Agreement by the Company does not,
and the performance of this Agreement and the transactions contemplated hereby
by the Company shall not, violate, conflict with or result in a breach of any
provision of, or constitute a default (or an event which, with notice or lapse
of time or both, would constitute a default) under, or result in the termination
of, or accelerate the performance required by, or result in a right of
termination or acceleration under, or result in the creation of any lien,
security interest, charge or encumbrance upon any of the properties or assets of
the Company or any of its subsidiaries under any of the terms, conditions or
provisions of (i) the respective Articles of Incorporation or By-Laws of the
Company or any of its subsidiaries, (ii) any statute, law, ordinance, rule,
regulation, judgment, decree, order, injunction, writ, permit or license of any
court or governmental authority applicable to the Company or any of its
subsidiaries or any of their respective properties or assets, or (iii) any note,
bond, mortgage, indenture, deed of trust, license, franchise, permit,
concession, contract, lease or other instrument, obligation or agreement of any
kind to which the Company or any of its subsidiaries is now a party or by which
the Company or any of its
 
                                      A-14
<PAGE>   86
 
subsidiaries or any of their respective properties or assets may be bound. The
consummation by the Company of the transactions contemplated hereby will not
result in any violation, conflict, breach, termination, acceleration or creation
of liens under any of the terms, conditions or provisions described in clauses
(i) through (iii) of the preceding sentence, subject (x) in the case of the
terms, conditions or provisions described in clause (ii) above, to obtaining
(prior to the Effective Time) the Company Required Statutory Approvals and the
Company Stockholders' Approval, and (y) in the case of the terms, conditions or
provisions described in clause (iii) above, to obtaining (prior to the Effective
Time) consents required from lenders, lessors or other third parties. Excluded
from the foregoing sentences of this paragraph (b), insofar as they apply to the
terms, conditions or provisions described in clauses (ii) and (iii) of the first
sentence of this paragraph (b), are such violations, conflicts, breaches,
defaults, terminations, accelerations or creations of liens, security interests,
charges or encumbrances that would not, in the aggregate, have a Company
Material Adverse Effect.
 
     (c) Except for (i) the filings by the Company required by the HSR Act and
any other notifications required under anti-trust regulations of applicable
jurisdictions, (ii) the filing of the Registration Statement with the SEC
pursuant to the Exchange Act and the declaration of the effectiveness thereof by
the SEC and filings with various state blue sky authorities, and (iii) the
making of the Merger Filing with the Department of Commerce of the State of
Michigan in connection with the Merger (the filings and approvals referred to in
clauses (i) through (iii) above are collectively referred to as the "Company
Required Statutory Approvals"), no declaration, filing or registration with, or
notice to, or authorization, consent or approval of, any governmental or
regulatory body or authority is necessary for the execution and delivery of this
Agreement by the Company or the consummation by the Company of the transactions
contemplated hereby, other than such declarations, filings, registrations,
notices, authorizations, consents or approvals which, if not made or obtained,
as the case may be, would not, in the aggregate, have a Company Material Adverse
Effect.
 
     SECTION 5.5.  SECURITIES REPORTS AND FINANCIAL STATEMENTS.  The Company has
filed with the SEC all forms, statements, reports and documents (including all
exhibits, amendments and supplements thereto) required to be filed by it under
each of the Securities Act, the Exchange Act and the respective rules and
regulations thereunder, all of which, as amended if applicable, complied in all
material respects with all applicable requirements of the appropriate act and
the rules and regulations thereunder (collectively, the "Company SEC Reports").
As of their respective dates, the Company 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. The audited
consolidated financial statements and unaudited interim consolidated financial
statements of the Company included in such reports (collectively, the "Company
Financial Statements") have been prepared in accordance with generally accepted
accounting principles applied on a consistent basis (except as may be indicated
therein or in the notes thereto) and fairly present the financial position of
the Company and its subsidiaries as of the dates thereof and the results of
their operations and changes in financial position for the periods then ended,
subject, in the case of the unaudited interim financial statements, to normal
year-end and audit adjustments and any other adjustments described therein.
 
     SECTION 5.6.  ABSENCE OF UNDISCLOSED LIABILITIES.  Except as disclosed in
the Company SEC Reports, neither the Company nor any of its subsidiaries had at
July 31, 1996, nor has incurred since that date, any liabilities or obligations
(whether absolute, accrued, contingent or otherwise) of any nature, except: (a)
liabilities, obligations or contingencies (i) which are accrued or reserved
against in the Company Financial Statements or reflected in the notes thereto,
or (ii) which were incurred after July 31, 1996 and were incurred in the
ordinary course of business and consistent with past practices; (b) liabilities,
obligations or contingencies which (i) would not, in the aggregate, have a
Company Material Adverse Effect, or (ii) have been discharged or paid in full
prior to the date hereof; and (c) liabilities and obligations which are of a
nature not required to be reflected in the consolidated financial statements of
the Company and its subsidiaries prepared in accordance with generally accepted
accounting principles consistently applied and which were incurred in the normal
course of business.
 
     SECTION 5.7.  ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as disclosed in
the Company SEC Reports, since July 31, 1996, the Company and its subsidiaries
have conducted their businesses only in the
 
                                      A-15
<PAGE>   87
 
ordinary course and in a manner consistent with past practice and since July 31,
1996, there has not been (a) any change in the financial condition, results of
operations or business of the Company or any of its subsidiaries having, in the
aggregate, a Company Material Adverse Effect; (b) any damage, destruction or
loss (whether or not covered by insurance) with respect to any assets of the
Company or any of its subsidiaries having, in the aggregate, a Company Material
Adverse Effect; (c) any change by the Company in its accounting methods,
principles or practices; (d) any revaluation by the Company of any of its
material assets in any material respect; (e) any entry by the Company or any of
its subsidiaries into any commitment or transactions material to the Company and
its subsidiaries, taken as a whole; or (f) any declaration, setting aside or
payment of any dividends or distributions in respect of shares of Company Common
Stock or any redemption, purchase or other acquisition of any of its securities
or any of the securities of any subsidiary of the Company.
 
     SECTION 5.8.  ABSENCE OF LITIGATION.  Except as disclosed in the Company
SEC Reports which, individually or in the aggregate, will not have a Company
Material Adverse Effect, taken as a whole, (a) there is no claim of any kind,
suit, action, proceeding, litigation, arbitration, investigation or controversy
affecting the Company or any of its subsidiaries pending or, to the knowledge of
the Company, threatened; and (b) neither the Company nor any of its subsidiaries
is subject to any continuing order of, or written agreement or memorandum of
understanding with, or continuing material investigation by, any governmental
entity or authority, or any judgment, decree, injunction, rule or order of any
court, governmental department, commission, agency, instrumentality or
authority, or any arbitrator.
 
     SECTION 5.9.  REGISTRATION STATEMENT AND PROXY STATEMENT.  None of the
information supplied or to be supplied by the Company or its subsidiaries for
inclusion in (a) the Registration Statement, or (b) the Proxy Statement will, in
the case of the Proxy Statement or any amendments thereof or supplements
thereto, at the time of the mailing of the Proxy Statement and any amendments or
supplements thereto, at the time of the meeting of stockholders of the Company
to be held in connection with the transactions contemplated by this Agreement,
and at the Effective Time, or, in the case of the Registration Statement, as
amended or supplemented, at the time it is declared effective by the SEC,
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 were made, not
misleading. The Registration Statement and Joint Proxy Statement/Prospectus will
comply in all material respects as to form and substance with the requirements
of the Securities Act, the Exchange Act and the rules and regulations
promulgated thereunder, except that no representation is made by the Company
with respect to information supplied by Parent for inclusion therein.
 
     SECTION 5.10.  NO VIOLATION OF LAW.  Except as disclosed in the Company SEC
Reports, neither the Company nor any of its subsidiaries is in violation of or
has been given notice or been charged with any violation of, any law, statute,
order, rule, regulation, ordinance or judgment including, without limitation,
any applicable environmental law, ordinance or regulation of any governmental or
regulatory body or authority, except for violations which, in the aggregate,
could not reasonably be expected to have a Company Material Adverse Effect. The
Company and its subsidiaries have all permits, licenses, franchises, variances,
exemptions, orders and other governmental authorizations, consents and approvals
necessary to conduct their businesses as presently conducted (collectively, the
"Company Permits"), except for permits, licenses, franchises, variances,
exemptions, orders, authorizations, consents and approvals the absence of which,
alone or in the aggregate, would not have a Company Material Adverse Effect. The
Company and its subsidiaries are not in violation of the terms of any Company
Permit, except for delays in filing reports or violations which, alone or in the
aggregate, would not have a Company Material Adverse Effect.
 
     SECTION 5.11.  COMPLIANCE WITH AGREEMENTS.  Except as disclosed in the
Company SEC Reports, the Company and each of its subsidiaries are not in breach
or violation of or in default in the performance or observance of any term or
provision of, and no event has occurred which, with notice or lapse of time or
action by a third party, could result in a default under (a) the respective
Articles of Incorporation or By-Laws of the Company or any of its subsidiaries;
or (b) any contract, commitment, agreement, indenture, mortgage, loan agreement,
note, lease, bond, license, approval or other instrument to which the Company or
any of its subsidiaries is a party or by which any of them is bound or to which
any of their property is subject, which
 
                                      A-16
<PAGE>   88
 
breaches, violations and defaults, in the case of clause (b) of this Section
5.11, would have, in the aggregate, a Company Material Adverse Effect.
 
     SECTION 5.12.  TAXES.  The Company and its subsidiaries have (i) duly filed
with the appropriate governmental authorities all Tax Returns required to be
filed by them for all periods ending on or prior to the date hereof, and such
Tax Returns are true, correct and complete in all material respects, and (ii)
duly paid in full all Taxes due in connection with or with respect to the filing
of such Tax Returns and have paid all other Taxes as are due, except such as are
being contested in good faith by appropriate government proceedings and with
respect to which the Company is maintaining reserves adequate for their payment.
Neither the IRS nor any other governmental entity or taxing authority or agency
is now asserting, either through audits, administrative proceedings, court
proceedings or otherwise, or, to the best of the Company's knowledge,
threatening to assert against the Company or any of its subsidiaries any
deficiency or claim for additional Taxes. Neither the Company nor any of its
subsidiaries has been granted any waiver of any statute of limitations with
respect to, or any extension of a period for the assessment of, any Tax. There
are no tax liens on any assets of the Company or any of its subsidiaries.
Neither the Company nor any of its subsidiaries has received a ruling or entered
into an agreement with the IRS or any other governmental entity or taxing
authority or agency that would have a Company Material Adverse Effect, taken as
a whole, after the Effective Time. The accruals and reserves for Taxes reflected
in the Company balance sheet reflected in the latest Company SEC Report are
adequate to cover all Taxes accruable through the date thereof (including Taxes
being contested) in accordance with generally accepted accounting principles.
Except for the Company's and its subsidiaries' intercompany tax allocation
agreements, no agreements relating to allocating or sharing of Taxes exist among
the Company and its subsidiaries and no tax indemnities given by the Company or
its subsidiaries in connection with a sale of stock or assets remain in effect.
Neither the Company nor any of its subsidiaries is required to include in income
either (i) any material amount in respect of any adjustment under Section 481 of
the Code, or (ii) any material installment sale gain. Neither the Company nor
any of its subsidiaries has made an election under Section 341(f) of the Code.
 
     SECTION 5.13.  EMPLOYEE BENEFITS PLANS; ERISA.
 
     (a) Except as set forth in the Company SEC Reports, as of the date hereof,
the Company and its subsidiaries do not maintain or contribute to or have any
obligation or liability to or under any material employee benefit plans,
programs, arrangements and practices (such plans, programs, arrangements and
practices of the Company and its subsidiaries being referred to as the "Company
Plans"), including employee benefit plans within the meaning set forth in
Section 3(3) of ERISA, or other similar material arrangements for the provision
of benefits. Neither the Company nor its subsidiaries has any obligation to
create any additional such plan or to amend any such plan so as to increase
benefits thereunder, except as required under the terms of the Company Plans,
under existing collective bargaining agreements or to comply with applicable
law.
 
     (b) The Company has furnished or made available to Parent a complete and
accurate copy of each Company Plan (or a description of such Company Plans, if
the plans are not in writing) and a complete and accurate copy of each material
document prepared in connection with each such Company Plan, including, without
limitation and where applicable, a copy of (i) each trust or other funding
arrangement, (ii) each summary plan description and summary of material
modifications, (iii) the most recently filed IRS Form 5500 and related
schedules, (iv) the most recently issued IRS determination letter for each such
Company Plan, (v) the most recently prepared actuarial report and financial
statement in connection with each such Company Plan and (vi) any other related
documents as the Parent may reasonably request.
 
     (c) No member of the Company's "controlled group," within the meaning of
Section 4001(a)(14) of ERISA, maintains or contributes to, or within the five
(5) years preceding the Effective Time has maintained or contributed to, an
employee pension benefit plan subject to Title IV of ERISA. None of the Company
Plans obligates the Company or any of its subsidiaries to pay material
separation, severance, termination or similar-type benefits solely as a result
of any transaction contemplated by this Agreement or as a result of a "change in
control," within the meaning of such term under Section 280G of the Code. None
of the Company Plans provides for or promises retiree medical, disability or
life insurance benefits to any current or former
 
                                      A-17
<PAGE>   89
 
   
employee, officer or director of the Company or any of its subsidiaries except
as otherwise required with respect to health plan coverage in Section 4980B of
the Code. Each of the Company Plans is subject only to the laws of the United
States or a political subdivision thereof.
    
 
     (d) Each Company Plan has been operated in all respects in accordance with
the requirements of all applicable laws and all persons who participate in the
operation of such Company Plans and all Company Plan "fiduciaries" (within the
meaning of Section 3(21) of ERISA) have acted in accordance with the provisions
of all applicable laws, except where violations of such applicable laws would
not, individually or in the aggregate, have a Company Material Adverse Effect,
taken as a whole. The Company and its subsidiaries have performed all
obligations required to be performed by any of them under, are not in any
respect in default under or in violation of, and the Company has no knowledge of
any default or violation by any party to, any Company Plan, except where such
failures, defaults or violations would not, individually or in the aggregate,
have a Company Material Adverse Effect, taken as a whole. No legal action, suit
or claim is pending or, to the knowledge of the Company, threatened with respect
to any Company Plan (other than claims for benefits in the ordinary course) and,
to the knowledge of the Company, no fact or event exists that could give rise to
any such action, suit or claim. Neither the Company nor any of its subsidiaries
has incurred any material liability to the Pension Benefit Guaranty Corporation
(other than premiums payable to the Pension Benefit Guaranty Corporation in the
ordinary course) or any material "withdrawal liability" within the meaning of
Section 4201 of ERISA.
 
     (e) Each Company Plan that is intended to be qualified under Section 401(a)
of the Code or Section 401(k) of the Code has received a favorable determination
letter from the IRS that it is so qualified, and each trust established in
connection with any Company Plan that is intended to be exempt from federal
income taxation under Section 501(a) of the Code is so exempt, and, to the
knowledge of the Company, no fact or event has occurred since the date of such
determination letter from the IRS to adversely affect the qualified status of
any such Company Plan or the exempt status of any such trust. No trust
maintained or contributed to by the Company or any of its subsidiaries is
intended to be qualified as a voluntary employees' beneficiary association or is
intended to be exempt from federal income taxation under Section 501(c)(9) of
the Code.
 
     (f) Any Company Plan that is intended to be an employee stock ownership
plan qualifies as an "employee stock ownership plan" within the meaning of
Section 4975(e)(7) of the Code and Section 407(d)(6) of ERISA, and any loan to
such plan satisfies the requirements for treatment of the Loan as an "exempt"
loan under Section 4975(d)(3) of the Code and Section 408(b)(3) of ERISA.
 
     (g) To the Company's knowledge, there has been no non-exempt prohibited
transaction (within the meaning of Section 406 of ERISA or Section 4975 of the
Code) with respect to any Company Plan. The Company and each of its subsidiaries
has not incurred any liability for any excise tax arising under Section 4972 or
4980B of the Code and, to the knowledge of the Company, no fact or event exists
that could give rise to any such liability except for liability which singly or
in the aggregate could not reasonably be expected to cause a Company Adverse
Effect.
 
     (h) All contributions, premiums or payments required to be made with
respect to any Company Plan have been made on or before their due dates.
 
     (i) The Company Disclosure Letter sets forth a true and complete list of
each current or former employee, officer or director of the Company or any of
its subsidiaries who holds any option to purchase Company Common Stock as of the
date of this Agreement, together with the number of shares of Company Common
Stock subject to such option, the date of grant of such option, the option price
of such option, whether such option is intended to qualify as an incentive stock
option within the meaning of Section 422(b) of the Code (an "ISO") and the
expiration date of such option. The Company Disclosure Letter also sets forth
the total number of such ISOs and such non-qualified options.
 
     (j) Neither the Company nor any of its subsidiaries is a party to any
employment, severance, consulting or other similar contracts with any employees,
consultants, officers or directors of the Company or any of its subsidiaries
other than such contracts that are disclosed in the Company SEC Reports. Neither
the Company nor any of its subsidiaries is a party to any collective bargaining
agreements.
 
                                      A-18
<PAGE>   90
 
     SECTION 5.14.  LABOR CONTROVERSIES.  Except as set forth in the Company SEC
Reports, (a) there are no material controversies pending or, to the knowledge of
the Company, threatened between the Company or its subsidiaries and any
representatives of any of their employees; (b) to the knowledge of the Company,
there are no material organizational efforts presently being made or threatened
involving any of the presently unorganized employees of the Company or its
subsidiaries; (c) the Company and its subsidiaries have, to the knowledge of the
Company, complied in all material respects with all laws relating to the
employment of labor, including, without limitation, any provisions thereof
relating to wages, hours, collective bargaining, civil rights, administration of
leave and rights under the Consolidated Omnibus Budget Reconciliation Act of
1985 and the payment of social security and similar taxes; and (d) no person
has, to the knowledge of the Company, asserted that the Company or any of its
subsidiaries is liable in any material amount for any arrears of wages or any
taxes or penalties for failure to comply with any of the foregoing, except for
such controversies, organizational efforts, non-compliance and liabilities
which, singly or in the aggregate, could not reasonably be expected to cause a
Company Material Adverse Effect.
 
     SECTION 5.15.  ENVIRONMENTAL MATTERS.  Except as set forth in the Company
Disclosure Letter, (i) the Company and its subsidiaries have conducted their
respective businesses in compliance with all applicable Environmental Laws,
including, without limitation, having all permits, licenses and other approvals
and authorizations necessary for the operation of their respective businesses as
presently conducted, (ii) none of the properties owned or leased by the Company
or any of its subsidiaries contain any Hazardous Substance as a result of any
activity of the Company or any of its subsidiaries or otherwise in amounts
exceeding the levels permitted by all applicable Environmental Laws, (iii)
neither the Company nor any of its subsidiaries has received any formal or
informal notices, demand letters or requests for information from any federal,
state, local or foreign governmental entity or third party indicating that the
Company or any of its subsidiaries may be in violation of, or liable under, any
Environmental Law in connection with the ownership or operation of their
businesses, (iv) there are no civil, criminal or administrative actions, suits,
demands, claims, hearings, investigations or proceedings pending or threatened
against the Company or any of its subsidiaries relating to any violation, or
alleged violation, of any Environmental Law, (v) no reports or notices have been
submitted to or filed, or are required to be submitted or filed, by the Company
or any of its subsidiaries concerning the release of any Hazardous Substance or
the threatened or actual violation of any Environmental Law, (vi) no Hazardous
Substance has been disposed of, released or transported in violation of any
applicable Environmental Law on or from any properties owned by the Company or
any of its subsidiaries as a result of any activity of the Company or any of its
subsidiaries during the time such properties were owned, leased or operated by
the Company or any of its subsidiaries, or as a result of any other cause, (vii)
there have been no environmental investigations, studies, audits, tests, reviews
or other analyses regarding compliance or noncompliance with any applicable
Environmental Law arranged for, conducted by or which are or were in possession
of or the existence of which is known to the Company or its subsidiaries
relating to the activities of the Company or its subsidiaries, or conditions on
any property owned, leased or operated by Parent or its subsidiaries, (viii)
there are no underground storage tanks on, in or under any properties owned by
the Company or any of its subsidiaries and no underground storage tanks have
been closed or removed from any of such properties during the time such
properties were owned, leased or operated by the Company or any of its
subsidiaries, (ix) there is no asbestos or asbestos containing material present
in any of the properties owned by the Company and its subsidiaries and no
asbestos has been removed from any of such properties during the time such
properties were owned, leased or operated by the Company or any of its
subsidiaries, and (x) neither the Company, its subsidiaries nor any of their
respective properties are subject to any material liabilities or expenditures
(fixed or contingent) relating to any suit, settlement, court order,
administrative order, regulatory requirement, judgment or claim asserted or
arising under any Environmental Law, except for violations of the foregoing
clauses (i) through (x) that, singly, or in the aggregate, would not reasonably
be expected to have a Company Material Adverse Effect.
 
     SECTION 5.16.  TITLE TO ASSETS.  The Company and each of its subsidiaries
has good and marketable title to all their respective properties and assets,
real and personal, free and clear of all mortgages, liens, pledges, charges or
encumbrances of any nature whatsoever, except (a) liens for Taxes not yet due
and payable; (b) such imperfections in title and easements and encumbrances, if
any, as are not material in character, amount or extent and do not materially
and adversely affect the value or interfere with the present use of the
 
                                      A-19
<PAGE>   91
 
property subject thereto or affected thereby, or otherwise materially impair the
Company's present business operations; (c) as disclosed in the Company SEC
Reports; or (d) mortgages incurred in the ordinary course of business, and
except for such matters which, singly or in the aggregate, could not reasonably
be expected to cause a Company Material Adverse Effect. All leases under which
the Company leases any material real or personal property (copies of which have
been made available to Parent) are in good standing, valid and effective in
accordance with their respective terms, and there is not, under any of such
leases, any existing default or event which with notice or lapse of time or both
would become a default other than defaults under such leases which in the
aggregate will not have a Company Material Adverse Effect.
 
     SECTION 5.17.  COMPANY STOCKHOLDERS' APPROVAL.  The affirmative vote of the
holders of a majority of the outstanding shares of Company Common Stock entitled
to vote is necessary to approve the transactions contemplated by this Agreement.
 
     SECTION 5.18.  TRADEMARKS AND INTELLECTUAL PROPERTY COMPLIANCE.  The
Company and its subsidiaries own or have the right to use all of their
Intellectual Property Rights without any conflict with the rights of others,
except for such conflicts that have not had and are not reasonably likely to
have a Company Material Adverse Effect, and the consummation of the transactions
contemplated hereby will not alter or impair such rights in any material
respect. To the knowledge of the Company, no claims are pending by any person
with respect to the ownership, validity, enforceability or use of any such
Intellectual Property Rights challenging or questioning the validity or
effectiveness of any of the foregoing which claims could reasonably be expected
to have a Company Material Adverse Effect. To the Company's knowledge, none of
it or its subsidiaries' key technical personnel is in violation of any term of
any employment agreement, patent disclosure agreement or any other contract or
agreement relating to the relationship of any such employee with it or its
subsidiaries or any other party the result of which has had or is reasonably
likely to have a Company Material Adverse Effect.
 
     SECTION 5.19.  MATERIAL AGREEMENTS.  Except as set forth in the Company
Disclosure Letter, the Company has no material contracts which are required to
be filed as exhibits to the Company SEC Reports which have not been so filed,
and complete copies of the contracts identified in the Company Disclosure Letter
have been furnished to Parent.
 
     SECTION 5.20.  INSURANCE.  Except to the extent there would be no Company
Material Adverse Effect, to the Company's knowledge, all of the Company's and
its subsidiaries' liability, theft, life, health, fire, title, worker's
compensation and other forms of insurance, surety bonds and umbrella policies,
insuring the Company and its subsidiaries and their directors, officers,
employees, independent contractors, properties, assets and businesses, are valid
and in full force and effect (without any premium past due or pending notice of
cancellation) and are, in the reasonable judgment of the Company, adequate for
the business of the Company and its subsidiaries as now conducted, and there are
no claims, singly or in the aggregate, in excess of the limitations of coverage
set forth in such policies. Neither the Company nor any of its subsidiaries has
knowledge of any fact indicating that such policies will not continue to be
available to the Company and its subsidiaries upon substantially similar terms
subsequent to the Effective Time. The provision and/or reserves in the Company
Financial Statements are adequate for any and all self-insurance programs
maintained by the Company or its subsidiaries.
 
     SECTION 5.21.  BROKERS AND FINDERS.  Neither the Company nor any of its
officers, directors or employees has employed any investment banker, broker or
finder or incurred any liability for any investment banking fees, financial
advisory fees, brokerage fees, commissions or finder's fees in connection with
the transactions contemplated hereby, except that the Company has retained
Cleary Gull Reiland & McDevitt Inc. as its financial advisor.
 
     SECTION 5.22.  CERTAIN TRANSACTIONS.  Since July 1, 1996, none of the
officers or directors of the Company or of any of its subsidiaries, and, to the
Company's knowledge, none of their employees or the employees of any of its
subsidiaries is a party to any transaction with it or any of its subsidiaries
(other than for services as an employee, officer or director and other than
transactions between it and one or more of its direct or indirect wholly-owned
subsidiaries or between such subsidiaries), including without limitation, any
contract, agreement or other arrangement (i) providing for the furnishing of
services to or by, (ii) providing for rental of real or personal property to or
from, or (iii) otherwise requiring payments to or from, any such
 
                                      A-20
<PAGE>   92
 
officer, director, affiliate or employee, any member of the family of any such
officer, director or employee or any corporation, partnership, trust or other
entity in which any such officer, director or employee has a substantial
interest or which is an affiliate of such officer, director or employee (a
"Company Affiliated Transaction"). Since July 31, 1995 and until July 1, 1996,
none of the officers or directors of the Company or any of its subsidiaries and,
to the Company's knowledge, none of their employees or the employees of any of
its subsidiaries is a party to a Company Affiliated Transaction other than
transactions which would not have a Company Material Adverse Effect.
 
     SECTION 5.23.  OPINION OF FINANCIAL ADVISOR.  The Company has received the
opinion of Cleary Gull Reiland & McDevitt Inc., its financial advisor, dated the
date hereof, to the effect that, as of such date, the transactions contemplated
hereby are fair to its stockholders from a financial point of view, a copy of
which has been delivered to the other parties hereto.
 
     SECTION 5.24.  POOLING MATTERS.  To the Company's knowledge and based in
part upon consultation with its independent accountants, neither the Company nor
any of its affiliates has taken or agreed to take any action that would affect
the ability of Parent to account for the business combination to be effected by
the Merger as a pooling of interests.
 
     SECTION 5.25.  STOCK APPRECIATION RIGHTS.  All stock appreciation rights
heretofore granted have been exercised or surrendered so that as of the date
hereof no stock appreciation rights are outstanding.
 
     SECTION 5.26.  MEMTEC AGREEMENT.  Prior to the execution of this Agreement,
the Company has terminated the Agreement and Plan of Reorganization and Merger
dated as of August 30, 1996 to which the Company and Memtec Limited are parties,
such termination having been made under Section 6.5(d) of said Agreement and
Plan of Reorganization by sending to Memtec Limited a notice of termination.
 
                                   ARTICLE VI
 
                     CONDUCT OF BUSINESS PENDING THE MERGER
 
     SECTION 6.1.  CONDUCT OF BUSINESS BY THE COMPANY PENDING THE
MERGER.  Except as otherwise contemplated by this Agreement, after the date
hereof and prior to the Closing Date or earlier termination of this Agreement,
unless Parent shall otherwise agree in writing, the Company shall, and shall
cause its subsidiaries to:
 
     (a) conduct their respective businesses in the ordinary and usual course of
business and consistent with past practice;
 
     (b) not (i) amend or propose to amend their respective Articles of
Incorporation or By-Laws, (ii) split, combine or reclassify their outstanding
capital stock, or (iii) declare, set aside or pay any dividend or distribution
payable in cash, stock, property or otherwise, except for the payment of
dividends or distributions by a wholly-owned subsidiary of the Company;
 
     (c) not issue, sell, pledge or dispose of, or agree to issue, sell, pledge
or dispose of or otherwise cause to become outstanding, any additional shares
of, or any options, warrants or rights of any kind to acquire any shares of
their capital stock of any class or any debt or equity securities convertible
into or exchangeable for such capital stock, except that the Company may issue
shares upon the exercise of Company Options and Company Warrants outstanding on
the date hereof;
 
     (d) not (i) incur or become contingently liable with respect to any
material indebtedness for borrowed money other than (x) borrowings in the
ordinary course of business, or (y) borrowings to refinance existing
indebtedness, in the ordinary course of business, (ii) redeem, purchase, acquire
or offer to purchase or acquire any shares of its capital stock or any options,
warrants or rights to acquire any of its capital stock or any security
convertible into or exchangeable for its capital stock, (iii) take any action
which would jeopardize the treatment of the Merger as a pooling of interests
under APB 16, (iv) take or fail to take any action which action or failure would
cause the Company or its stockholders (except to the extent that any
stockholders receive cash in lieu of fractional shares) to recognize gain or
loss for federal income tax purposes as a result of
 
                                      A-21
<PAGE>   93
 
the consummation of the Merger, (v) make any acquisition of any assets or
businesses and expenditures for fixed or capital assets other than expenditures
set forth on attached Schedule 6.1 or expenditures in the ordinary course of
business which, in such cases of $100,000 or more, shall be on terms reasonably
acceptable to Parent, (vi) sell, pledge, dispose of or encumber any assets or
businesses other than sales in the ordinary course of business which, in such
cases involving $100,000 or more, shall be on terms reasonably acceptable to
Parent, or (vii) enter into any contract, agreement, commitment or arrangement
with respect to any of the foregoing;
 
     (e) use all commercially reasonable efforts to preserve intact their
respective business organizations and goodwill, keep available the services of
their respective present officers and key employees, and preserve the goodwill
and business relationships with customers, vendors and others having business
relationships with them and not engage in any action, directly or indirectly,
with the intent to adversely impact the transactions contemplated by this
Agreement;
 
     (f) confer on a regular and frequent basis with one or more representatives
of Parent to report operational matters of materiality and the general status of
ongoing operations;
 
     (g) not enter into or amend any employment, severance, special pay
arrangement with respect to termination of employment or other similar
arrangements or agreements with any directors, officers or key employees, except
in the ordinary course and consistent with past practice which, in cases
involving $50,000 or more, shall be on terms reasonably acceptable to Parent;
 
     (h) not adopt, enter into or amend any bonus, profit sharing, compensation,
stock option, pension, retirement, deferred compensation, health care,
employment or other employee benefit plan, agreement, trust, fund or arrangement
for the benefit or welfare of any employee or retiree except as required to
comply with changes in applicable law or increases in wages in the ordinary
course and consistent with past practice for non-executive employees;
 
     (i) maintain with adequately capitalized insurance companies insurance
coverage for its assets and its businesses in such amounts and against such
risks and losses as are consistent with past practice; and
 
     (j) not enter into any arrangement or transaction of the type described in
Section 5.22.
 
     SECTION 6.2.  CONDUCT OF BUSINESS BY PARENT PENDING THE MERGER.  Except as
otherwise contemplated by this Agreement, after the date hereof and prior to the
Closing Date or earlier termination of this Agreement, unless the Company shall
otherwise agree in writing, Parent shall, and shall cause it subsidiaries,
including Subsidiary, to:
 
     (a) not split, combine or reclassify their outstanding capital stock in a
manner which would reduce the value of the Merger Consideration, unless
appropriate adjustment is made to the Merger Consideration to avoid such
reduction in value;
 
     (b) use all commercially reasonable efforts to preserve intact their
respective business organizations and goodwill, keep available the services of
their respective present officers and key employees and preserve the goodwill
and business relationships with customers and others having business
relationships with them and not engage in any action, directly or indirectly,
with the intent to adversely impact the transactions contemplated by this
Agreement;
 
     (c) confer on a regular and frequent basis with one or more representatives
of the Company to report operational matters of materiality and the general
status of ongoing operations but Parent shall not be required to disclose any
confidential or proprietary information in such conferences;
 
     (d) maintain with adequately capitalized insurance companies insurance
coverage for its assets and its businesses in such amounts and against such
risks and losses as are consistent with past practice; and
 
     (e) not enter into any arrangement or transaction of the type described in
Section 4.21 which would have a Parent Material Adverse Effect.
 
                                      A-22
<PAGE>   94
 
     SECTION 6.3.  CONTROL OF THE COMPANY'S OPERATIONS.  Nothing contained in
this Agreement shall give to Parent, directly or indirectly, rights to control
or direct the Company's operations prior to the Effective Time. Prior to the
Effective Time, the Company shall exercise, consistent with and subject to the
terms and conditions of this Agreement, complete control and supervision of its
operations.
 
     SECTION 6.4.  CONTROL OF PARENT'S OPERATIONS.  Nothing contained in this
Agreement shall give to the Company, directly or indirectly, rights to control
or direct Parent's operations prior to the Effective Time. Prior to the
Effective Time, Parent shall exercise, consistent with and subject to the terms
and conditions of this Agreement, complete control and supervision of its
operations.
 
     SECTION 6.5.  ACQUISITION TRANSACTIONS.
 
     (a) After the date hereof and prior to the Effective Time or earlier
termination of this Agreement, the Company shall not, and shall not permit any
of its subsidiaries or advisors, including but not limited to Cleary Gulf
Reiland & McDevitt Inc., to (i) initiate, solicit or seek, directly or
indirectly, any inquiries or the making or implementation of any proposal or
offer (including, without limitation, any proposal or offer to its stockholders)
to acquire all or any substantial part of the business and properties of the
Company and its subsidiaries or more than fifty percent (50%) of the capital
stock of the Company and its subsidiaries, whether by merger, purchase of
assets, tender offer or otherwise, whether for cash, securities or any other
consideration or combination thereof except for the transaction contemplated
herein (any such transactions being referred to herein as "Acquisition
Transactions"), (ii) engage in any negotiations concerning, or provide any
confidential information or data to, or have any discussions with, any person
relating to an Acquisition Transaction, or (iii) otherwise cooperate in any
effort or attempt to make, implement or accept an Acquisition Transaction.
 
     (b) Notwithstanding any other provision of this Agreement, in response to
an unsolicited proposal or inquiry (or a proposal or inquiry arising from a
general solicitation prior to July 22, 1996) with respect to an Acquisition
Transaction, (i) the Company may engage in discussions or negotiations regarding
such proposal or inquiry with a third party who seeks to initiate such
discussions or negotiations and furnish to such third party information
concerning the Company and its business, properties and assets, and (ii) if such
Acquisition Transaction is a tender offer subject to the provisions of Section
14(d) under the Exchange Act, the Company's Board of Directors may take and
disclose to the Company's stockholders a position contemplated by Rule 14e-2(a)
under the Exchange Act.
 
     (c) In the event the Company shall determine to provide any information or
negotiate as described in paragraph (b), above, or shall receive any offer of
the type referred to in paragraph (b), above, it shall (i) immediately provide
Parent with a copy of all information provided to the third party, (ii) inform
Parent that information is to be provided, that negotiations are to take place
or that an offer has been received, as the case may be, and (iii) furnish to
Parent the identity of the person receiving such information or the proponent of
such offer, if applicable, and, if an offer has been received, unless the Board
of Directors of the Company concludes that such disclosure is inconsistent with
its fiduciary duties under applicable law, a description of the material terms
thereof.
 
     (d) The Company may terminate this Agreement, withdraw, modify or not make
its recommendations referred to in Section 7.2, and enter into a definitive
agreement for an Acquisition Transaction if, but only if, (i) the Board of
Directors of the Company shall have determined in good faith after consultation
with the independent financial advisors of the Company that such Acquisition
Transaction would be more favorable to the Company's stockholders from a
financial point of view than the Merger, and (ii) the Board of Directors of the
Company shall conclude in good faith after consultation with its legal counsel
that such action is necessary in order for the Board of Directors of the Company
to act in a manner that is consistent with its fiduciary obligations under
applicable law.
 
                                      A-23
<PAGE>   95
 
                                  ARTICLE VII
 
                             ADDITIONAL AGREEMENTS
 
     SECTION 7.1.  ACCESS TO INFORMATION.  From and after the date hereof, each
party shall furnish promptly to one another a copy of each report and other
document filed or received by any of them pursuant to the requirements of
federal or state securities laws or which may have a material effect on their
respective businesses, properties or personnel, and work papers of their
respective accountants and other information or copies of such documentation and
access to senior management personnel as reasonably deemed necessary by the
requesting party's respective accountants, legal counsel or financial advisors
to complete the Joint Proxy Statement/Prospectus and Registration Statement, the
HSR Act filing and similar filings with other foreign governments or the
opinions or letters referred to in Sections 8.2(b), 8.2(c), 8.2(g), 8.3(b) and
8.3(g), below. Parent and its subsidiaries shall hold and shall use their
commercially reasonable efforts to cause the Parent's representatives to hold,
and the Company and its subsidiaries shall hold and shall use their commercially
reasonable efforts to cause the Company's representatives to hold, in strict
confidence all non-public documents and information furnished to Parent and
Subsidiary or to the Company, as the case may be, in connection with the
transactions contemplated by this Agreement pursuant to the terms and conditions
of that certain Letter Agreement dated June 11, 1996 regarding confidential
information by and between Parent and the Company which are hereby incorporated
in and made a part of this Agreement as if they were set forth herein in their
entirety. Notwithstanding the foregoing (i) Parent and the Company may disclose
such information as may be necessary in connection with seeking the Parent
Required Statutory Approvals, the Company Required Statutory Approvals and the
Company Stockholders' Approval (as defined in Section 7.2 below), and (ii) each
of Parent, Subsidiary and the Company may disclose any information that it is
required by law or judicial or administrative order to disclose.
 
     SECTION 7.2.  STOCKHOLDERS' APPROVAL.  Subject to the fiduciary duties of
the Board of Directors of the Company under applicable law, the Company shall,
as promptly as practicable, submit the transactions contemplated hereby for the
approval of its stockholders at a meeting of stockholders and, subject to the
fiduciary duties of the Board of Directors of the Company under applicable law,
shall use its commercially reasonable efforts to obtain stockholder approval and
adoption (the "Company Stockholders' Approval") of this Agreement and the
transactions contemplated hereby. Such meeting of the stockholders shall be held
as soon as practicable following the date upon which the Registration Statement
becomes effective. The Company shall, through its Board of Directors, but
subject to the fiduciary duties of the members thereof, recommend to its
stockholders approval of the transactions contemplated by this Agreement. For
purposes of such approval, the parties hereto agree that the Company's Employee
Stock Ownership Plan may appoint an independent fiduciary to vote the shares of
Company Common Stock represented thereby. The Company (i) acknowledges that a
breach of its covenant contained in this Section 7.2(a) to convene a meeting of
its stockholders and call for a vote with respect to the approval of this
Agreement and the Merger will result in irreparable harm to Parent which will
not be compensable in money damages, and (ii) agrees that such covenant shall be
specifically enforceable and that specific performance and injunctive relief
shall be a remedy properly available to Parent for a breach of such covenant.
 
     SECTION 7.3.  AFFILIATES OF THE COMPANY.  Within 30 days after the date of
this Agreement, (i) the Company shall deliver to Parent a letter identifying all
persons who may be deemed affiliates of the Company under Rule 145 of the
Securities Act ("Rule 145"), including, without limitation, all directors and
executive officers of the Company, and (ii) the Company shall advise the persons
identified in such letter of the resale restrictions imposed by applicable
securities laws, including Accounting Series Release No. 135 ("ASR 135"). Each
of the Company and Parent shall use its commercially reasonable efforts to
obtain as soon as practicable after the date hereof from all directors,
executive officers and affiliates of the Company and Parent an agreement (the
"Affiliate Agreements") that such persons will comply with the provisions of ASR
135 as amended by Staff Accounting Bulletins Nos. 65 and 76 and that if Parent
so elects, the Parent Common Stock issued to such directors, executive officers
and affiliates of the Company pursuant to the Merger may be legended to refer to
the Affiliate Agreement and the resale restrictions therein.
 
                                      A-24
<PAGE>   96
 
     SECTION 7.4.  EXCHANGE LISTING.  Parent shall use its commercially
reasonable efforts to effect, at or before the Effective Time, authorization for
listing on The New York Stock Exchange, upon official notice of issuance, of the
shares of Parent Common Stock to be issued pursuant to the Merger.
 
     SECTION 7.5.  EXPENSES AND FEES.  Each party hereto agrees to bear its own
expenses incurred in connection with the consummation of the transactions
contemplated by this Agreement, except:
 
     (a) Parent shall pay and be responsible for all fees and expenses incurred
in connection with the printing, filing and mailing of the Joint Proxy
Statement/Prospectus and with all HSR Act filings associated with the
transaction and any other filings required by antitrust regulations of foreign
jurisdictions; and
 
     (b) If the Company (i) fails to fulfill its obligations as set forth in
Section 6.5(a)-(c) or (ii) terminates this Agreement pursuant to Section 6.5(d),
the Company shall pay to Parent the sum of $5,000,000 in lieu of any other
payments or penalties or the reimbursement of expenses incurred by Parent; and
 
     (c) If the waiting period applicable to the consummation of the Merger
under the HSR Act shall not have expired or been terminated on or prior to the
date specified in Section 9.1(a)(i) and provided that the Company shall have
fulfilled its obligations under Section 7.6(b), Parent shall pay to the Company
the sum of $10,000,000 in lieu of any other payments or penalties or the
reimbursement of expenses incurred by the Company.
 
     SECTION 7.6.  AGREEMENT TO COOPERATE.
 
     (a) Subject to the terms and conditions herein provided, each of the
parties hereto shall use all commercially reasonable efforts to take, or cause
to be taken, all action and to do, or cause to be done, all things necessary,
proper or advisable pursuant to all agreements, contracts, indentures or other
instruments to which the parties hereto are a party, or under any applicable
laws and regulations to consummate and make effective the transactions
contemplated by this Agreement, including using its commercially reasonable
efforts to (i) obtain all necessary or appropriate waivers, consents and
approvals from lenders, landlords, security holders or other parties whose
waiver, consent or approval is required to consummate the Merger, (ii) effect
all necessary registrations, filings and submissions, and (iii) lift any
injunction or other legal bar to the Merger (and, in such case, to proceed with
the Merger as expeditiously as possible).
 
     (b) Without limiting the foregoing, each of Parent and the Company
undertakes and agrees to file as soon as practicable after the date hereof the
HSR Act filing and any other filings required by antitrust regulations of other
jurisdictions including foreign countries. Each of Parent and the Company shall
(i) use all best efforts to comply as expeditiously as possible with all lawful
requests of the Federal Trade Commission (the "FTC") or the Antitrust Division
for additional information and documents, and (ii) not under any circumstances
whatsoever extend any waiting period under the HSR Act or enter into any
agreement with the FTC or the Antitrust Division not to consummate the
transactions contemplated by this Agreement, except with the prior written
consent of the other parties hereto, which consent shall not be unreasonably
withheld, and (iii) use all best efforts, including litigation with the FTC or
the Antitrust Division if necessary, to cause the expeditious termination of the
HSR Act waiting period and the efficient and expeditious conclusion of review by
the FTC or the Antitrust Division under the HSR Act.
 
     (c) In the event any litigation is commenced by any person or entity
relating to the transactions contemplated by this Agreement, including any
Acquisition Transaction, Parent shall have the right, at its own expense, to
participate therein, and the Company will not settle any such litigation without
the consent of Parent, which consent will not be unreasonably withheld.
 
     SECTION 7.7.  PUBLIC STATEMENTS.  The parties (i) shall consult with each
other prior to issuing any press release or any written public statement with
respect to this Agreement or the transactions contemplated hereby, and (ii)
shall not issue any such press release or written public statement prior to such
consultation, except as may be required by law and applicable listing
requirements.
 
                                      A-25
<PAGE>   97
 
     SECTION 7.8.  OPTION AND WARRANTS; BENEFIT PLANS.
 
          (a) (i) Each unexpired option or warrant to purchase Company Common
     Stock ("Company Options" and "Company Warrants," respectively), which by
     its terms becomes at the Effective Time an option or warrant to purchase
     shares of Parent Common Stock, shall automatically and without any action
     on the part of the holder thereof be converted into an option or warrant to
     purchase the number of shares of Parent Common Stock equal to the number of
     shares of Company Common Stock which could be acquired upon the exercise of
     such Company Option or Company Warrant, as the case may be, multiplied by
     the Exchange Ratio (as defined in Section 3.2(a)), at an exercise price
     (per share of Parent Common Stock) equal to the per share exercise price of
     such Company Option or Company Warrant divided by the Exchange Ratio.
     Options and warrants to purchase Parent Common Stock described in this
     paragraph (i) of Section 7.8(a) are sometimes herein referred to as
     "Exchanged Options" and "Exchanged Warrants."
 
          (ii) With respect to each currently unexpired Company Option and
     Company Warrant, Parent shall offer to the holder thereof, contingent upon
     the effectiveness of the Merger, the right to exchange such Company Option
     or Company Warrant for an option issued by Parent (an "Exchanged Option")
     to purchase the number of shares of Parent Common Stock equal to the number
     of shares of Company Common Stock which could be acquired upon the exercise
     of such Company Option or Company Warrant, as the case may be, multiplied
     by the Exchange Ratio (as defined in Section 3.2(a)), at an exercise price
     (per share of Parent Common Stock) equal to the per share exercise price of
     such Company Option or Company Warrant divided by the Exchange Ratio. The
     other terms of an Exchanged Option shall, at the election of the holder of
     the Company Option or Company Warrant, be either (i) substantially
     identical to the other terms of the Company Option or Company Warrant or
     (ii) similar to the terms of options granted under Parent's existing stock
     option plans with such modifications from such existing option plans as
     Parent, in its sole discretion, may determine except that Parent shall not
     be obligated to offer options under this clause "(ii)" if Parent's auditors
     advise that such offer would be inconsistent with pooling of interests
     accounting treatment. To the extent that the Parent in its sole discretion
     determines that the offering of the alternatives described in the preceding
     sentence would result in a disqualification of a Company Option as an
     incentive stock option under Section 422 of the Code, clause (ii) shall not
     apply to such Company Option.
 
          (iii) This Section 7.8 shall not apply to a Company Option or Company
     Warrant to the extent that it is inconsistent with an employment agreement
     or other agreement between Parent and the holder of such Company Option or
     Company Warrant.
 
          (iv) Parent shall (X) reserve for issuance the number of shares of
     Parent Common Stock that will become issuable upon the exercise of the
     Exchanged Options and Exchanged Warrants and (Y) promptly after the
     Effective Time, issue to each holder of an Exchanged Option and Exchanged
     Warrant a document evidencing the same. Parent agrees to file with the
     Securities and Exchange Commission (the "SEC") at the Effective Time a
     Registration Statement on Form S-8 or other appropriate form under the
     Securities Act (as hereinafter defined) relating to shares of Parent Common
     Stock issuable upon exercise of the Exchanged Options and Exchanged
     Warrants and use its commercially reasonable efforts to cause such
     Registration Statement to remain effective until the exercise or expiration
     of such Exchanged Options and Exchanged Warrants.
 
     (b) Parent agrees to provide benefit plans of general applicability which
will be made available to employees of the Company at the Effective Time and for
at least the two (2) years immediately thereafter, the terms of which shall be
at least as favorable as those found in the Company Plans in effect for the
benefit of such employees prior to the Effective Time; provided, however, that
the terms of the plans so provided may be modified at any time during such two
(2) year period to the extent Parent determines that such modifications are
necessary in order for such plans, or for the Parent Plans, to maintain their
tax-qualified or tax-exempt status under the Code, or to comply with the
requirements of ERISA or any other applicable law. Parent also agrees to give
such employees credit for all eligibility and vesting they have accrued during
their respective terms of employment with the Company.
 
                                      A-26
<PAGE>   98
 
     SECTION 7.9.  NOTIFICATION OF CERTAIN MATTERS.  Each of the Company, Parent
and Subsidiary agrees to give prompt notice to each other of, and to use their
respective commercially reasonable efforts to prevent or promptly remedy (i) the
occurrence or failure to occur or the impending or threatened occurrence or
failure to occur, of any event which occurrence or failure to occur would be
likely to cause any of its representations or warranties in this Agreement to be
untrue or inaccurate in any material respect at any time from the date hereof to
the Effective Time, and (ii) any material failure on its part to comply with or
satisfy any covenant, condition or agreement to be complied with or satisfied by
it hereunder; provided, however, that the delivery of any notice pursuant to
this Section 7.9 shall not limit or otherwise affect the remedies available
hereunder to the party receiving such notice.
 
   
     SECTION 7.10.  DIRECTORS' AND OFFICERS' INDEMNIFICATION.
    
 
     (a) The Surviving Corporation shall observe any indemnification provisions
now existing in the Articles of Incorporation or By-Laws of the Company or in
the indemnification agreements set forth in the Company Disclosure Letter for
the benefit of any individual who served as a director or officer of the Company
at any time prior to the Effective Time.
 
     (b) Commencing at the Effective Time, Parent shall indemnify, defend and
hold harmless each individual who served as a director, officer, employee or
fiduciary of the Company or any of its subsidiaries (the "Indemnified Parties")
at any time prior to the Effective Time from and against (i) all losses, claims,
damages, costs, expenses, liabilities or judgments or amounts that are paid in
settlement with the approval of the indemnifying party (which approval shall not
be unreasonably withheld) of or in connection with any claim, action, suit,
proceeding or investigation based in whole or in part on or arising in whole or
in part out of the fact that such person is or was a director, officer, employee
or fiduciary of the Company or any of its subsidiaries, whether pertaining to
any matter existing or occurring at or prior to the Effective Time and whether
asserted or claimed prior to, or at or after the Effective Time ("Indemnified
Liabilities) and (ii) all Indemnified Liabilities based in whole or in part on,
or arising in whole or in part out of, or pertaining to this Agreement or the
transactions contemplated hereby, in each case to the full extent a corporation
is permitted under the MBCA to indemnify its own directors, officers, employees
and fiduciaries, as the case may be (and the Surviving Corporation will pay
expenses in advance of the final disposition of any such action or proceeding to
each Indemnified Party to the full extent permitted by law). Without limiting
the foregoing, in the event that any such claim, action, suit, proceeding or
investigation is brought against any Indemnified Party (whether arising before
or after the Effective Time), (x) the Indemnified Parties may retain counsel
satisfactory to them and the Company (or them and the Surviving Corporation
after the Effective Time), (y) the Company (or after the Effective Time, the
Surviving Corporation) shall pay all reasonable fees and expenses of such
counsel for the Indemnified Parties promptly as statements therefor are
received, and (z) the Company (or after the Effective Time, the Surviving
Corporation) will use all commercially reasonable efforts to assist in the
vigorous defense of any such matter, provided that neither the Company nor the
Surviving Corporation shall be liable for any settlement of any claim effected
without its written consent, which consent, however, shall not be unreasonably
withheld. Any Indemnified Party wishing to claim indemnification under this
Section 7.10, upon learning of any such claim, action, suit, proceeding or
investigation, shall notify the Company or, after the Effective Time, the
Surviving Corporation (but the failure so to notify an Indemnifying Party shall
not relieve it from any liability which it may have under this Section except to
the extent such failure prejudices such party). The Indemnified Parties as a
group may retain only one law firm to represent them with respect to each such
matter unless there is, under applicable standards of professional conduct, a
conflict on any significant issue between the positions of any two or more
Indemnified Parties.
 
     (c) The provisions of this Section 7.10 are intended to be for the benefit
of, and shall be enforceable by, each Indemnified Party, and his or her heirs
and representatives.
 
     SECTION 7.11.  JOINT PROXY STATEMENT/PROSPECTUS AND REGISTRATION STATEMENT.
 
     (a) As promptly as practicable after the execution of this Agreement,
Parent and the Company shall prepare and file with the SEC a Joint Proxy
Statement/Prospectus and Registration Statement on Form S-4 relating to the
approval of the Merger by the stockholders of the Company and shall use all
commercially reasonable efforts to cause the Registration Statement to become
effective as soon thereafter as practicable.
 
                                      A-27
<PAGE>   99
 
     (b) Prior to the date of approval of the Merger by the Company's
stockholders, each of the Company, Parent and Subsidiary shall correct promptly
any information provided by it to be used specifically in the Joint Proxy
Statement/Prospectus and Registration Statement that shall have become false or
misleading in any material respect and shall take all steps necessary to file
with the SEC and have declared effective or cleared by the SEC any amendment or
supplement to the Joint Proxy Statement/Prospectus or the Registration Statement
so as to correct the same and to cause the Joint Proxy Statement/Prospectus as
so corrected to be disseminated to the stockholders of the Company and Parent,
in each case to the extent required by applicable law.
 
     SECTION 7.12.  TAX-FREE TREATMENT OF MERGER.  The Parent and Company shall
each use its commercially reasonable efforts to cause the Merger to be treated
as a tax-free reorganization for federal, state and foreign income tax purposes
and agree that this Agreement shall serve as the Plan of Reorganization
therefor.
 
     SECTION 7.13.  EARLY PUBLICATION.  Parent shall publish 30 days'
post-closing combined financial results of Parent and the Surviving Corporation
for the first full 30-day period following the Closing within twenty (20) days
of the end of such period in a form sufficient to satisfy the pooling of
interests accounting requirements.
 
                                  ARTICLE VIII
 
                                   CONDITIONS
 
     SECTION 8.1.  CONDITIONS TO EACH PARTY'S OBLIGATION TO EFFECT THE
MERGER.  Unless waived by the parties, the respective obligations of each party
to effect the Merger shall be subject to the fulfillment at or prior to the
Closing of the following conditions:
 
     (a) this Agreement and the transactions contemplated hereby, as
appropriate, shall have been approved and adopted by the requisite vote of the
stockholders of the Company under applicable law;
 
     (b) the shares of Parent Common Stock issuable in the Merger shall have
been authorized for listing on The New York Stock Exchange;
 
     (c) the waiting period applicable to the consummation of the Merger under
the HSR Act and other applicable antitrust regulations of applicable
jurisdictions shall have expired or been terminated;
 
     (d) the Registration Statement shall have been declared effective by the
SEC in accordance with the provisions of the Securities Act, and no stop order
suspending such effectiveness shall have been issued by the SEC and remain in
effect and no proceedings for that purpose shall, on or prior to the Effective
Time, have been instituted or, to the knowledge of Parent or the Company,
threatened by the SEC or any state regulatory authorities;
 
     (e) no preliminary or permanent injunction or other order or decree by any
federal or state court which prevents the consummation of the Merger shall have
been issued and remain in effect (each party agreeing to use its commercially
reasonable efforts to have any such injunction, order or decree lifted);
 
     (f) no action shall have been taken, and no statute, rule or regulation
shall have been enacted, by any state or federal government or governmental
agency in the United States which would prevent the consummation of the Merger
or make the consummation of the Merger illegal; and
 
     (g) all material governmental waivers, consents, orders and approvals,
domestic or foreign, legally required for the consummation of the Merger and the
transactions contemplated hereby shall have been obtained and be in effect at
the Effective Time.
 
     SECTION 8.2.  ADDITIONAL CONDITIONS TO OBLIGATION OF THE COMPANY TO EFFECT
THE MERGER.  Unless waived by the Company, the obligation of the Company to
effect the Merger shall be subject to the fulfillment at or prior to the Closing
of the following additional conditions:
 
     (a) Parent and Subsidiary shall have performed in all material respects
their agreements contained in this Agreement required to be performed on or
prior to the Closing Date and the representations and
 
                                      A-28
<PAGE>   100
 
warranties of Parent and Subsidiary contained in this Agreement shall be true
and correct in all material respects (except that where any statement in a
representation or warranty expressly includes a standard of materiality, such
statement shall be true and correct in all respects) on and as of the date made
and on and as of the Closing Date, except for those representations and
warranties which address matters only as of a particular date (which shall
remain true and correct as of such date), as if made at and as of such date, and
the Company shall have received a Certificate of the Chairman of the Board and
Chief Executive Officer and the President or a Vice President of Parent, in form
and substance reasonably satisfactory to the Company, to that effect;
 
     (b) the Company shall have received an opinion of Godfrey & Kahn, S.C.,
independent counsel to the Company, in form and substance reasonably
satisfactory to the Company, effective as of the Closing Date and based on
representations of the Company and Parent, to the effect that (i) the Merger of
Subsidiary with and into the Company pursuant to this Agreement and applicable
state law will be treated for United States federal income tax purposes as a
reorganization within the meaning of Section 368(a) of the Code, (ii) Parent,
Subsidiary and the Company will each be a party to the reorganization within the
meaning of Section 368(b) of the Code, and (iii) the stockholders of the Company
will not recognize gain or loss as a result of the Merger, except to the extent
such stockholders receive any Fractional Share Payment;
 
     (c) the Company shall have received an opinion from the law firm Carter,
Ledyard & Milburn, independent counsel to Parent and Subsidiary, dated the
Closing Date, reasonably satisfactory to the Company, as to such matters as are
customarily the subject of an opinion to the acquired company by counsel for the
acquiring company in similar transactions;
 
     (d) since the date hereof, there shall have been no changes that
constitute, and no event or events shall have occurred which have resulted in or
constitute, a Parent Material Adverse Effect, taken as a whole;
 
     (e) all waivers, consents, orders, authorizations, and approvals required
to be obtained, and all filings required to be made by Parent and Subsidiary for
the authorization, execution and delivery of this Agreement and the consummation
by Parent and Subsidiary of the transactions contemplated hereby shall have been
obtained and made by Parent and Subsidiary, except where the failure to obtain
the waivers, consents, orders, authorization or approvals required to be
obtained or any filings required to be made would not have a Parent Material
Adverse Effect, taken as a whole;
 
     (f) no governmental authority, foreign or domestic, shall have promulgated
any statute, rule or regulation which, when taken together with all such
promulgations, would materially impair the value of the Merger to the Company's
shareholders;
 
     (g) the Company shall have received from Cleary Gull Reiland & McDevitt
Inc. an opinion reasonably acceptable to the Company, dated as of the date on or
about which the Joint Proxy Statement/Prospectus is first distributed to the
stockholders of the Company, to the effect that the consideration to be received
by the stockholders of the Company in the Merger is fair, from a financial point
of view, to the holders of Company Common Stock; and
 
     (h) All required consents and approvals of lenders who have advanced
$5,000,000 or more to Parent and lessors of material leases or other material
contracts of the Parent shall have been obtained and be in effect at the
Effective Time if the failure to obtain such consents would have a Parent
Material Adverse Effect.
 
     SECTION 8.3.  ADDITIONAL CONDITIONS TO OBLIGATIONS OF PARENT AND SUBSIDIARY
TO EFFECT THE MERGER. Unless waived by Parent and Subsidiary, the obligations of
Parent and Subsidiary to effect the Merger shall be subject to the fulfillment
at or prior to the Effective Time of the following additional conditions:
 
     (a) the Company shall have performed in all material respects its
agreements contained in this Agreement required to be performed on or prior to
the Closing Date and the representations and warranties of the Company contained
in this Agreement shall be true and correct in all material respects (except
that where any statement in a representation or warranty expressly includes a
standard of materiality, such statement shall be true and correct in all
respects) on and as of the date made and on and as of the Closing Date, except
for those representations and warranties which address matters only as of a
particular date (which shall remain
 
                                      A-29
<PAGE>   101
 
true and correct as of such date), as if made at and as of such date, and Parent
shall have received a Certificate of the Chairman of the Board and Chief
Executive Officer and the President and Chief Operating Officer or a Vice
President of the Company, in form and substance reasonably satisfactory to
Parent to that effect;
 
     (b) Parent shall have received an opinion from the law firm of Godfrey &
Kahn, S.C., independent counsel to the Company, effective as of the Closing
Date, reasonably satisfactory to Parent as to such matters as are customarily
the subject of an opinion to the acquiring company by counsel for the acquired
company in similar transactions;
 
     (c) the Affiliate Agreements required to be delivered to Parent pursuant to
Section 7.3 shall have been furnished as required by Section 7.3;
 
     (d) since the date hereof, there shall have been no changes that
constitute, and no event or events shall have occurred which have resulted in or
constitute, a Company Material Adverse Effect, taken as a whole, other than (x)
changes or events involving the financial performance of the Company or (y)
changes or events involving the financial condition of the Company resulting
solely from changes in the financial performance of the Company;
 
     (e) all waivers, consents, orders, authorizations, and approvals required
to be obtained, and all filings required to be made by the Company for the
authorization, execution and delivery of this Agreement and the consummation by
the Company of the transactions contemplated hereby shall have been obtained and
made by the Company except where the failure to obtain the waivers, consents,
orders, authorizations, or approvals required to be obtained or any filings
required to be made would not have a Company Material Adverse Effect, taken as a
whole;
 
     (f) no governmental authority shall have promulgated any statute, rule or
regulation which, when taken together with all such promulgations, would
materially impair the value to Parent of the Merger;
 
     (g) All required consents and approvals of lenders who have advanced
$5,000,000 or more to the Company and lessors of material leases or other
material contracts of the Company shall have been obtained and be in effect at
the Effective Time;
 
     (h) Parent shall have received a letter from Coopers & Lybrand to the
effect that in their opinion neither the Company nor any of its affiliates has
taken or agreed to take any action that would affect the ability of Parent to
account for the business combination to be effected by the Merger as a pooling
of interests;
 
     (i) Company Options and Company Warrants covering not less than 513,835
shares of Company Common Stock shall, prior to or at the Effective Time, either
have been exercised or will be converted into Exchanged Options or Exchanged
Warrants so that the number of shares covered by Company Options or Company
Warrants following the closing shall not exceed 128,458; and
 
     (j) The consolidated gross sales (prior to the impact of any adjustments to
gross sales, including sales credits) of the Company and its subsidiaries for
the period commencing August 1, 1996 and ending sixty (60) days prior to the
scheduled date of the meeting of the Company's stockholders at which Company
Stockholders' Approval is sought shall be not less than the consolidated gross
sales (prior to the impact of any adjustments to gross sales, including sales
credits) of the Company and its subsidiaries for the similar period during
fiscal year 1996, in each case determined in accordance with generally accepted
accounting principles consistently applied.
 
                                      A-30
<PAGE>   102
 
                                   ARTICLE IX
 
                       TERMINATION, AMENDMENT AND WAIVER
 
     SECTION 9.1.  TERMINATION.  This Agreement may be terminated by the mutual
consent of the parties, or at any time prior to the Closing Date, whether before
or after approval of the matters presented in connection with the Merger by the
stockholders of the Company, as follows:
 
     (a) The Company shall have the right to terminate this Agreement;
 
          (i) if the Merger is not completed by October 15, 1997 other than on
     account of delay or default on the part of the Company;
 
          (ii) if the Merger is enjoined by a final, unappealable order of a
     U.S. court having jurisdiction not entered at the request or with the
     support of the Company or any of their affiliates or associates;
 
          (iii) if the terms and conditions of Section 6.5(d) and Section 7.5(b)
     are satisfied;
 
          (iv) if Parent (A) has breached any representation, warranty or
     covenant in any material respect, and (B) does not cure such default in all
     material respects within 30 days after written notice of such default is
     given to Parent by the Company;
 
          (v) if the Company's stockholders' vote is not sufficient to approve
     the transactions contemplated by this Agreement; or
 
          (vi) if the Parent Average Trading Price is less than $21.00 per
     share.
 
     (b) Parent shall have the right to terminate this Agreement;
 
          (i) if the Merger is not completed by October 15, 1997 other than on
     account of delay or default on the part of Parent;
 
          (ii) if the Merger is enjoined by a final, unappealable order of a
     U.S. court having jurisdiction not entered at the request or with the
     support of Parent or any of their affiliates or associates;
 
          (iii) if the Company (A) has breached any representation, warranty or
     covenant in any material respect, and (B) does not cure such default in all
     material respects within 30 days after written notice of such default is
     given to the Company by Parent; or
 
          (iv) if the Company's stockholders' vote is not sufficient to approve
     the transactions contemplated by this Agreement.
 
     SECTION 9.2.  EFFECT OF TERMINATION.  In the event of termination of this
Agreement by either Parent or the Company as provided in Section 9.1, this
Agreement shall forthwith become void and there shall be no further obligation
on the part of the Company, Parent, Subsidiary, or their respective officers or
directors (except as set forth in this Section 9.2 and in Sections 7.1, 7.5 and
7.7, all of which shall survive the termination), provided, however, that
nothing in this Section 9.2 shall relieve any party from liability for any
breach of this Agreement.
 
     SECTION 9.3.  AMENDMENT.  This Agreement may not be amended except by
action taken by the parties' respective Boards of Directors or duly authorized
committees thereof and then only by an instrument in writing signed on behalf of
each of the parties hereto and in compliance with applicable law.
 
     SECTION 9.4.  WAIVER.  At any time prior to the Effective Time, any party
hereto may (a) extend the time for the performance of any of the obligations or
other acts of the other parties hereto, (b) waive any inaccuracies in the
representations and warranties contained herein or in any document delivered
pursuant thereto, and (c) waive compliance with any of the agreements or
conditions contained herein. Any such extension or waiver shall not be deemed to
be continuing or to apply to any future obligation or requirement of any part
hereto provided herein. Any agreement on the part of a party hereto to any such
extension or waiver shall be valid if set forth in an instrument in writing
signed on behalf of such party.
 
                                      A-31
<PAGE>   103
 
                                   ARTICLE X
 
                               GENERAL PROVISIONS
 
   
     SECTION 10.1.  NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES.  The
representations and warranties contained in Articles IV and V of this Agreement
shall not survive the Merger, and after effectiveness of the Merger, the
Company, Parent, Subsidiary or their respective officers or directors shall have
no further obligation with respect thereto. The covenants and agreements set
forth in only the following sections of this Agreement shall survive the Merger:
sec.sec. 3.3, 7.5, 7.8, 7.10 and 7.13.
    
 
     SECTION 10.2.  NOTICES.  All notices and other communications hereunder
shall be in writing and shall be deemed given if delivered personally, mailed by
registered or certified mail (return receipt requested) or sent via facsimile to
the parties at the following addresses (or at such other address for a party as
shall be specified by like notice):
 
     (a) If to Parent or Subsidiary, to:
 
                    Pall Corporation
                    25 Harbor Park Drive
                    Port Washington, NY 11050
                    Attention: Eric Krasnoff
                    Chairman and Chief Executive Officer
                    Facsimile Number: 516-484-3529
 
     with a copy to:
 
                    Carter, Ledyard & Milburn
                    Two Wall Street
                    New York, NY 10005
                    Attention: Heywood Shelley
                    Facsimile Number: 212-732-3232
 
     (b) If to the Company, to:
 
                    Gelman Sciences Inc.
                    600 South Wagner Road
                    Ann Arbor, Michigan
                    Attention: Charles Gelman
                    Facsimile Number: (313) 913-6336
 
     with a copy to:
 
                    Godfrey & Kahn, S.C.
                    780 North Water Street
                    Milwaukee, Wisconsin 53202
                    Attention: Richard J. Bliss
                    Facsimile Number: (414) 273-5198
 
     SECTION 10.3.  INTERPRETATION.  The headings contained in this Agreement
are for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement. In this Agreement, unless a contrary intention
appears (i) the words "herein," "hereof" and "hereunder" and other words of
similar impact refer to this Agreement as a whole and not to any particular
Article, Section or other subdivision, and (ii) reference to any Article or
Section means such Article or Section hereof. No provision of this Agreement
shall be interpreted or construed against any party hereto solely because such
party or its legal representative drafted such provision.
 
     SECTION 10.4.  MISCELLANEOUS.  This Agreement (including the documents and
instruments referred to herein) (a) constitutes the entire agreement and
supersedes all other prior agreements and understandings, both written and oral,
among the parties, or any of them, with respect to the subject matter hereof,
(b) is not
 
                                      A-32
<PAGE>   104
 
   
intended to confer upon any other person any rights or remedies hereunder except
for rights of indemnified parties under Section 7.10, and (c) shall not be
assigned by operation of law or otherwise. THIS AGREEMENT SHALL BE GOVERNED IN
ALL RESPECTS, INCLUDING VALIDITY, INTERPRETATION AND EFFECT, BY THE LAWS OF THE
STATE OF DELAWARE APPLICABLE TO CONTRACTS EXECUTED AND TO BE PERFORMED WHOLLY
WITHIN SUCH STATE.
    
 
     SECTION 10.5.  COUNTERPARTS.  This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original, but all of which
shall constitute one and the same agreement. Each of the parties agrees to
accept and be bound by facsimile signatures hereto.
 
     SECTION 10.6.  PARTIES IN INTEREST.  This Agreement shall be binding upon
and inure solely to the benefit of each party hereto, and nothing in this
Agreement, express or implied, is intended to confer upon any other person any
rights or remedies of any nature whatsoever under or by reason of this
Agreement.
 
     SECTION 10.7.  EXHIBITS AND SCHEDULES.  All Exhibits and Schedules referred
to in this Agreement shall be attached hereto and are incorporated by reference
herein.
 
     SECTION 10.8.  SEVERABILITY.  If any term or other provision of this
Agreement in invalid, illegal or incapable of being enforced by any rule of law
or public policy, all other conditions and provisions of this Agreement shall
nevertheless remain in full force and effect so long as the economic or legal
substance of the transactions contemplated hereby is not affected in any manner
adverse to any party. Upon such determination that any term or other provision
is invalid, illegal or incapable of being enforced, parties hereto shall
negotiate in good faith to modify this Agreement so as to effect the original
intent of the parties as closely as possible in an acceptable manner to the end
that transactions contemplated hereby are fulfilled to the extent possible.
 
     SECTION 10.9.  DEFINITION OF KNOWLEDGE.  For those warranties and
representations set forth in Article IV which are subject to the qualification
"to Parent's knowledge," Parent will be deemed to have knowledge of a matter if
(i) Eric Krasnoff, Jeremy Hayward-Surry or Gilbert Weiner have knowledge of the
matter, or (ii) such matter has come, or should reasonably be expected to have
come, to the attention of either of such individuals if such individual had
conducted a reasonable due diligence review of Parent's operations and business,
including, without limitation, reasonable inquiries to key personnel of Parent
regarding the business and operations of Parent and a review of, and discussion
with key personnel regarding, pertinent books and records of Parent. For those
warranties and representations set forth in Article V which are subject to the
qualification "to the Company's knowledge," the Company will be deemed to have
knowledge of a matter if (i) Charles Gelman, Kim Davis, George Uveges or Edward
Levitt have knowledge of the matter, or (ii) such matter has come, or should
reasonably be expected to have come, to the attention of any of such individuals
if such individual had conducted a reasonable due diligence review of the
Company's operations and business, including, without limitation, reasonable
inquiries to key personnel of the Company regarding the business and operations
of the Company and a review of, and discussion with key personnel regarding,
pertinent books and records of the Company.
 
                                      A-33
<PAGE>   105
 
     IN WITNESS WHEREOF, Parent, Subsidiary and the Company have caused this
Agreement to be executed by their respective officers thereunto duly authorized
as of the date first written above.
 
                                          PALL CORPORATION
 
                                          By: /s/ ERIC KRASNOFF
 
                                            ------------------------------------
                                            Eric Krasnoff,
                                            Chairman and Chief Executive Officer
 
                                          PALL ACQUISITION CORPORATION
 
                                          By: /s/ ERIC KRASNOFF
 
                                            ------------------------------------
                                            Eric Krasnoff, President
 
                                          GELMAN SCIENCES INC.
 
                                          By: /s/ CHARLES GELMAN
 
                                            ------------------------------------
                                            Charles Gelman,
                                            Chairman and Chief Executive Officer
 
                                      A-34
<PAGE>   106
 
                                                                       EXHIBIT B
 
   
December 27, 1996
    
 
Board of Directors
Gelman Sciences Inc.
600 South Wagner Road
Ann Arbor, MI 48103
 
Dear Ladies and Gentlemen:
 
You have requested our opinion as to the fairness, from a financial point of
view, to the holders (the "Stockholders") of shares of common stock, par value
$0.10 per share ("Gelman Common Stock"), of Gelman Sciences Inc. ("Gelman") of
the consideration to be received by the Stockholders pursuant to the terms of
the Merger Agreement dated as of October 27, 1996 (the "Merger Agreement") by
and among Pall Corporation ("Pall"), Pall Acquisition Corporation, a wholly
owned, direct subsidiary of Pall ("Subsidiary"), and Gelman, pursuant to which
Gelman will be merged (the "Merger") with and into Subsidiary and Gelman will
become a wholly owned subsidiary of Pall.
 
Under the Merger Agreement, each issued and outstanding share of Gelman Common
Stock, other than shares of Gelman Common Stock to be canceled pursuant to the
Merger Agreement, will be converted into the right to receive a number of Pall
shares determined as follows:
 
     (i)  if the Pall Average Trading Price is $27.96 per share or more, 1.1804
          shares of Pall common stock;
 
     (ii)  if the Pall Average Trading Price is less than $27.96 per share but
           more than $25.29 per share, a number of shares of Pall common stock
           equal to $33.00 divided by the Pall Average Trading Price;
 
     (iii) if the Pall Average Trading Price is $25.29 per share or less, 1.3047
           shares of Pall common stock.
 
   
Notwithstanding the foregoing, if the Pall Average Trading Price is less than
$21.00 per share, the Gelman Board of Directors has the right to terminate the
Merger Agreement without liability in any respect whatsoever. The "Pall Average
Trading Price" shall mean the average of the closing sales prices of a share of
Pall common stock, as reported by New York Stock Exchange Consolidated
Transactions, during the 30 "Trading Days" (which term shall mean a day on which
the New York Stock Exchange is open for business) preceding the third Trading
Day before the meeting of Gelman's stockholders to approve the transactions
contemplated by the Merger Agreement. The terms and conditions of the Merger are
more fully set forth in the Merger Agreement.
    
 
In arriving at our opinion, we have reviewed, among other things, the Merger
Agreement and certain business and financial information relating to Gelman,
including certain financial projections, estimates and analyses provided to us
by Gelman. We have also reviewed and discussed the businesses and prospects of
Gelman and its subsidiaries with representatives of Gelman's management. We have
considered certain financial and stock market data relating to Gelman and in
certain cases have compared that information to similar data for other publicly
held companies in businesses considered to be generally comparable to Gelman.
 
   
We have also reviewed certain publicly available business and financial
information relating to Pall, including certain information concerning the
estimates of the future operating and financial performance prepared by industry
experts unaffiliated with Pall, and have had discussions with a representative
of Pall's management. In addition, we have reviewed financial plans prepared by
Pall's management. We have considered certain financial and stock market data
relating to Pall and in certain cases have compared that information to similar
data for other publicly held companies in businesses considered to be generally
comparable to Pall.
    
 
In arriving at our opinion, we have also considered the financial impact of the
Merger on Pall's future earnings per share, an unleveraged after-tax discounted
cash flow analysis of both Gelman and Pall, an analysis of Gelman's percentage
contribution to the pro forma operating results for Pall compared to the implied
percentage ownership interest of holders of Gelman Common Stock in Pall after
giving effect to the Merger, a comparison of the purchase price premium to be
paid for the Gelman Common Stock based on the Exchange
 
                                       B-1
<PAGE>   107
 
Gelman Sciences Inc.
   
December 27, 1996
    
Page 2
Ratio to certain other similar-sized mergers, certain publicly available
information concerning the nature and terms of certain other transactions that
Cleary Gull believed to be relevant on a comparative basis, a historical
comparison of Gelman's and Pall's stock market prices and such other
information, financial studies and analyses and financial, economic and market
criteria as we deemed relevant and appropriate.
 
   
In connection with our review, we have not independently verified any of the
foregoing information and have relied on its being complete and accurate in all
material respects. We have not made an independent evaluation or appraisal of
any assets or liabilities (contingent or otherwise) of Gelman or Pall or any of
their respective subsidiaries, nor have we been furnished with any such
evaluation or appraisal that has not been publicly disclosed. With respect to
the financial plans, estimates and analyses provided to us by Gelman, we have
assumed, with your permission, that all such information was reasonably prepared
on bases reflecting the best currently available estimates and judgments of
management of Gelman as to future financial performance and was based upon the
historical performance of Gelman and certain estimates and assumptions which
were reasonable at the time made. Upon advice of Gelman and its legal and
accounting advisors, we have assumed the Merger will be treated as a pooling of
interests transaction in accordance with generally accepted accounting
principles and as a tax-free reorganization for federal income tax purposes. Our
opinion is based on economic, monetary and market conditions existing on the
date hereof.
    
 
Based upon and subject to the foregoing, it is our opinion that, as of the date
hereof, the consideration to be received by the Stockholders pursuant to the
Merger Agreement is fair, from a financial point of view, to the Stockholders.
 
   
We are acting as financial advisor to the Board of Directors of Gelman in this
transaction and will receive a fee for our services, a significant portion of
which is contingent upon the approval and consummation of the Merger. In
addition, Gelman has agreed to indemnify us for certain liabilities that may
arise out of the rendering of this opinion. On March 22, 1995, we were the
managing underwriter of a public offering of 1,437,500 shares of Gelman Common
Stock for which we received customary compensation. In the ordinary course of
business, we actively trade securities of Gelman and Pall for our own account
and for the accounts of our customers and, accordingly, may at any time hold a
long or short position in such securities.
    
 
   
This opinion is for the use and benefit of the Board of Directors of Gelman and
is rendered to the Board of Directors of Gelman in connection with its
consideration of the Merger. We are not making any recommendation regarding
whether or not it is advisable for Stockholders to vote in favor of the Merger.
We have not been requested to opine as to, and our opinion does not in any
manner address, Gelman's underlying business decision to proceed with or effect
the Merger. We are not rendering any opinion as to the value of Pall or making
any recommendation to the Stockholders in respect of the advisability of
disposing of or retaining Pall common stock received pursuant to the Merger.
    
 
Very truly yours,
 
CLEARY GULL REILAND & McDEVITT INC.
 
                                       B-2
<PAGE>   108
 
                                                                       EXHIBIT C
 
                               EXCHANGE AGREEMENT
 
   
     THIS EXCHANGE AGREEMENT ("Agreement") is entered into this             day
of January, 1997, by and among Pall Corporation, a New York corporation
("Pall"), Gelman Sciences Inc., a Michigan corporation ("Gelman"), and
                    ("Grantee").
    
 
                                    RECITALS
 
     WHEREAS, Grantee is the holder of one or more outstanding options ("Gelman
Option") pursuant to which Grantee is or, subject to a schedule of
exercisability (vesting) set forth therein, may become entitled to purchase a
specified number of shares of common stock of Gelman ("Gelman Shares") at a
specified exercise price per share, as set forth on Schedule A attached hereto
("Schedule A"); and
 
     WHEREAS, Pall has entered into a certain Agreement and Plan of
Reorganization and Merger with Gelman, dated October 27, 1996 ("Merger
Agreement"), pursuant to which all holders of outstanding options to purchase
Gelman Shares are to be offered in exchange therefor options to purchase the
number of shares of Pall common stock ("Pall Shares") equal to the number of
Gelman Shares which could be acquired upon the exercise of such Gelman Options
multiplied by the Exchange Ratio, at an exercise price per share equal to the
per share exercise price of such Gelman options divided by the Exchange Ratio,
all as such terms are defined in the Merger Agreement; and
 
     WHEREAS, Pall, Gelman, and Grantee mutually desire that, at the Effective
Time of the Merger under the Merger Agreement, each of Grantee's outstanding
Gelman Options be terminated in exchange for an option ("Pall Option") to
purchase Pall Shares on substantially the same terms and conditions; subject,
however, to the formula noted in the immediately preceding paragraph for
determining the number of Pall Shares purchasable and the exercise price,
 
     NOW, THEREFORE, in consideration of the premises and of the mutual
covenants and undertakings hereinafter set forth, Pall, Gelman and Grantee
hereby agree as follows:
 
   
     1. The foregoing recitals are made a part of this Agreement and Grantee
represents and agrees that all Gelman Options heretofore granted to Grantee and
outstanding in whole or in part as of the date of this Agreement are correctly
described in Schedule A hereto. Words and terms used herein with initial capital
letters and not defined herein are used herein as defined in the Merger
Agreement. Grantee acknowledges receipt of the combined Proxy Statement (of
Gelman) -- Prospectus (of Pall) dated December 27, 1996 which Prospectus covers,
inter alia, Pall's offer to Grantee to exchange a Pall Option for each Gelman
Option held by Grantee.
    
 
   
     2. Grantee hereby accepts Pall's offer to exchange a Pall Option, in the
form of Schedule B hereto, for each Gelman Option held by Grantee and agrees
that, at the Effective Time of the Merger, each Gelman Option held by Grantee
shall automatically be deemed terminated and exchanged for a Pall Option for a
number of Pall Shares equal to the number of Gelman Shares covered by such
Gelman Option multiplied by the Exchange Ratio, at an exercise price per share
equal to the per share exercise price of such Gelman Option divided by the
Exchange Ratio. Each such Pall Option shall be in the form of Schedule B hereto
and the vesting provisions and the expiration date thereof shall descend from
and be the same as the vesting provisions in and the expiration date of the
Gelman Option for which such Pall Option is exchanged. If the Gelman Option
exchanged states that it is intended to be (in whole or in part) an incentive
stock option qualifying as such within the meaning of the Internal Revenue Code
of 1986, as amended, the Pall Option issued in exchange therefor shall likewise
so state, to the same extent.
    
 
   
     3. Grantee agrees to deliver to Gelman before the Effective Time or, if not
so delivered, then to Pall promptly after the Effective Time, at such address or
location as Pall may hereafter specify, the "Stock Option Agreement" evidencing
each Gelman Option held by Grantee and Pall agrees that, promptly after receipt
thereof (but not prior to the Effective Time), Pall will issue and deliver to
Grantee a written instrument
    
 
                                       C-1
<PAGE>   109
 
   
evidencing each Pall Option for which each such Gelman Option is being exchanged
as provided herein. A Pall Option shall not be exercisable until such instrument
has been delivered to Grantee. All Gelman Stock Option Agreements delivered to
Gelman before the Effective Time shall be delivered to Pall by Gelman at or
promptly after the Effective Time.
    
 
     4. This Agreement is conditioned upon the consummation of the Merger and
if, for whatever reason, the Merger Agreement shall be terminated or it shall be
established that the Merger will not be consummated (of which fact Gelman shall
notify Grantee), this Agreement shall automatically terminate and be of no
further force or effect and any Gelman Stock Option Agreement theretofore
delivered to Pall shall promptly be returned to Grantee.
 
     5. Grantee agrees that, at the Effective Time, any and all claims and
rights that Grantee ever had, now has or hereafter may have under all of
Grantee's Gelman Options against Gelman or its successors and assigns shall be
deemed released and extinguished, and thereafter Grantee's rights shall be only
against Pall, for the issuance and delivery of the Pall Option and the
performance of Pall's obligations thereunder.
 
     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first above written.
 
                                          PALL CORPORATION
 
                                          By
                                          --------------------------------------
                                               Title:
 
                                          GELMAN SCIENCES INC.
 
                                          By
                                          --------------------------------------
                                               Title:
 
                                          GRANTEE
 
                                          --------------------------------------
 
                                       C-2
<PAGE>   110
 
                                   SCHEDULE A
                                       TO
   
                   EXCHANGE AGREEMENT DATED JANUARY   , 1997
    
                         BY AND AMONG PALL CORPORATION,
                            GELMAN SCIENCES INC. AND
 
                       GRANTEE:
 
                           GRANTEE'S GELMAN OPTION(S)
 
Grant Date:
 
Type of Option (ISO, NQSO):
 
   
Number of shares granted (adjusted for splits):
    
 
Number of shares remaining as of the date hereof
   
(after any prior exercise and adjustment for splits):
    
 
Exercise price (as of the date hereof):
 
Number of shares now vested:
 
Future Vesting Schedule:
 
<TABLE>
<CAPTION>
NUMBER OF SHARES     DATE
- ----------------     ----
<S>                  <C>
 
</TABLE>
 
Date of Expiration of Term:
 
Note: The information above should be furnished separately for each option.
 
                                       C-3
<PAGE>   111
 
                                   SCHEDULE B
                                       TO
   
                   EXCHANGE AGREEMENT DATED JANUARY   , 1997
    
                         BY AND AMONG PALL CORPORATION,
                            GELMAN SCIENCES INC. AND
 
                       GRANTEE:
 
     THIS DOCUMENT CONSTITUTES PART OF A PROSPECTUS COVERING SECURITIES THAT
HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933.
 
                                  STOCK OPTION
                  To Purchase Common Stock of Pall Corporation
           Granted in Exchange for Gelman Sciences Inc. Stock Option
 
Granted to:
 
Date of Grant: [Note: This will be the Effective Time of the Merger]
 
Number of Shares:
 
Purchase Price Per Share:
 
Expiration Date:
 
Granted in Exchange for Gelman Sciences Inc. Option dated:
 
     sec.1. Subject to the terms and conditions hereof, Pall Corporation (the
"Company") hereby grants you an irrevocable option (the "Option") to purchase
the number of shares of common stock of the Company ("Common Stock") set forth
above at the price per share set forth above. This option [is] [is not] intended
to be an incentive stock option within the meaning of Section 422 of the
Internal Revenue Code of 1986, as amended (the "Code").
 
     sec.2. On the Date of Grant the Option is exercisable for           shares
and will become exercisable for the balance of the shares covered hereby in
installments as follows:
 
<TABLE>
<CAPTION>
[List vesting dates]     [Number of shares becoming vested]
<S>                      <C>
 
</TABLE>
 
                                       C-4
<PAGE>   112
 
     sec.3. The Option may not be exercised by you unless all of the following
conditions are met:
 
          (a) Counsel for the Company must be satisfied at the time of exercise
     that the issuance of shares upon exercise will be in compliance with the
     Securities Act of 1933, as amended, and applicable state laws.
 
          (b) You must give the Company written notice of exercise specifying
     the number of shares with respect to which the Option is being exercised
     and at the time of exercise pay the full purchase price for the shares
     being acquired either (i) in cash (the word "cash" being deemed to include
     a check) or (ii) with the consent of the Committee (as defined below), in
     Common Stock, or partly in cash and partly in Common Stock, in accordance
     with sec.6 hereof. The minimum number of shares with respect to which the
     Option may be exercised in part at one time shall be 25.
 
          (c) You must at all times during the period beginning with the Date of
     Grant of the Option and ending on the date of such exercise have been
     either an employee or a director of the Company or of one of its subsidiary
     corporations (or of a corporation or a parent or subsidiary of a
     corporation assuming this option by reason of a corporate merger,
     consolidation, acquisition of property or stock, separation, reorganization
     or liquidation in a transaction to which Section 424(a) of the Code
     applies); provided, however: (i) if your employment or directorship
     terminates for any reason other than your death, you have the right for a
     period of 90 days following such termination, but in no event subsequent to
     the expiration date of the Option, to exercise that portion of the Option,
     if any, which is exercisable by you on the date of termination of your
     employment or directorship, and (ii) if your employment or directorship
     terminates by reason of your death, the provisions of sec.4 shall govern.
 
          (d) You (or your estate or any person exercising this option pursuant
     to sec.4 hereof) must make payment to the Company by cash or check of such
     amount as is sufficient to satisfy the Company's obligation, if any, to
     withhold federal, state and local taxes by reason of such exercise or make
     such other arrangement satisfactory to the Committee as will enable the
     Company to satisfy any such obligation.
 
          (e) The shares covered hereby have been listed (subject only to
     official notice of issuance) on any national securities exchange on which
     the Common Stock is then listed.
 
     sec.4. The Option is not transferable by you otherwise than by will or the
laws of descent and distribution and is exercisable during your lifetime only by
you. If at the time of your death the Option has not been fully exercised, your
estate or any person who acquires the right to exercise this option by bequest
or inheritance or by reason of your death may, at any time within 180 days after
the date of your death (but in no event after the expiration date), exercise
this option with respect to the number of shares as to which you could have
exercised this option at the time of your death. It shall be a condition to the
exercise of this option after your death that the Company shall have been
furnished evidence satisfactory to it of the right of the person exercising this
option to do so and that all estate, transfer, inheritance or death taxes
payable with respect to the Option or the shares to which it relates have been
paid or otherwise provided for to the satisfaction of the Company.
 
     sec.5. If the Company effects any stock split, stock dividend, combination,
exchange of shares or similar capital adjustments, occurring after the Date of
Grant of this option and prior to its exercise in full, the number and kind of
shares for which this option may thereafter be exercised and the option price
per share shall be proportionately and appropriately adjusted so as to reflect
such change, all as determined by the Committee. In the event of any transaction
to which sec.424(a) of the Code applies (i.e., a corporate merger,
consolidation, acquisition of property or stock, separation, reorganization or
liquidation involving the Company or a parent or subsidiary of the Company), the
Company shall have the right to substitute or cause to be substituted for the
Option a new option, or to cause the Option to be assumed, provided such
substitution or assumption meets the requirements of said sec.424(a).
 
     sec.6. With the consent of the Committee (as defined in sec.7 hereof), you
may make payment at the time of exercise by delivering to the Company shares of
Common Stock of the Company having a total fair market value equal to the option
exercise price, or a combination of cash and such shares having a total fair
market value equal to the option exercise price, provided, however, that all
shares so delivered must have been
 
                                       C-5
<PAGE>   113
 
beneficially owned by you for at least six months prior to the option exercise
date and, upon request, the Company shall be given satisfactory proof of such
beneficial ownership. For the purposes of the preceding sentence, the fair
market value of a share of Common Stock shall be the mean between the high and
low sale prices of the Common Stock on the trading day preceding the option
exercise date as such prices are reported by and for the New York Stock Exchange
Composite Transactions. Certificates representing shares delivered to the
Company pursuant to this paragraph shall be duly endorsed or accompanied by the
appropriate stock powers, in either case with signature guaranteed if so
required by the Company.
 
   
     sec.7. The Option shall be administered by the Compensation Committee of
the Company as from time to time constituted (the "Committee"). The Committee
shall be authorized to interpret the Option and to make all other decisions
necessary or advisable for the administration thereof. The Committee may correct
any defect or supply any omission or reconcile any inconsistency in the Option
in the manner and to the extent the Committee deems desirable to carry it into
effect. Any decision of the Committee in the administration of the Option, as
described herein, shall be final and conclusive. The Committee may act only by a
majority of its members in office, except that the members thereof may authorize
any one or more of their number or any officer of the Company to execute and
deliver documents on behalf of the Committee. No member of the Committee shall
be liable for anything done or omitted to be done by him or by any other member
of the Committee in connection with the Option, except for his own willful
misconduct or as expressly provided by statute.
    
 
     sec.8. Nothing in the Option shall confer any rights on any officer or
other employee to continue in the employ of the Company or any of its subsidiary
corporations or shall interfere in any way with the right of the Company or any
of its subsidiary corporations, as the case may be, to terminate his or her
employment at any time.
 
     sec.9. The words "employee", "subsidiary corporation" and any other words
or terms used in the Option which are defined or used in Section 422 or 424 of
the Code shall, unless the context clearly requires otherwise, have the meanings
assigned to them therein, irrespective of whether the Option is an incentive
stock option.
 
                                          PALL CORPORATION
 
                                          By
 
                                            ------------------------------------
                                                         Secretary
 
                                       C-6
<PAGE>   114
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
   
ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
    
 
   
     (A) EXHIBITS
    
 
   
     The index to exhibits appears immediately following the signature pages of
this Registration Statement.
    
 
   
     (B) FINANCIAL STATEMENT SCHEDULES
    
 
   
     Not applicable with respect to the Registrant, since Item 14 of Form S-4 is
not applicable to it. Not applicable with respect to Gelman Sciences Inc.
("Gelman"), since Item 17 of Form S-4 is not applicable to Gelman.
    
 
   
     (C) REPORT, OPINION OR APPRAISAL
    
 
   
     The opinion of Cleary Gull Reiland & McDevitt Inc. is set forth as Exhibit
B to the Proxy Statement-Prospectus constituting Part I of this Registration
Statement.
    
 
                                      II-1
<PAGE>   115
 
   
                                   SIGNATURES
    
 
   
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this amendment to Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the Village of East
Hills, State of New York, on the 27th day of December, 1996.
    
 
   
                                          PALL CORPORATION
    
 
   
                                          By: /s/    JEREMY HAYWARD-SURRY
    
 
                                            ------------------------------------
   
                                                    Jeremy Hayward-Surry
    
   
                                                  President, Treasurer and
    
   
                                                  Chief Financial Officer
    
 
   
     Pursuant to the requirements of the Securities Act of 1933, this amendment
to Registration Statement has been signed on December 27, 1996, by the following
persons in the capacities indicated.
    
 
   
<TABLE>
<CAPTION>
                SIGNATURE                                          TITLE
- ------------------------------------------    -----------------------------------------------
<C>                                           <S>
           /s/  ERIC KRASNOFF                Chairman and Chief Executive Officer (Principal
                                             Executive Officer) and Director
- ------------------------------------------
              Eric Krasnoff

      /s/  JEREMY HAYWARD-SURRY               President, Treasurer and Chief Financial
- ------------------------------------------      Officer (Principal Financial Officer) and
           Jeremy Hayward-Surry                 Director

      /s/  PETER SCHWARTZMAN                  Chief Accountant (Principal Accounting Officer)
- ------------------------------------------
            Peter Schwartzman

                    *                         Director
- ------------------------------------------
              Abraham Appel

                    *                         Director
- ------------------------------------------
            Ulric Haynes, Jr.

                    *                         Director
- ------------------------------------------
           Edwin W. Martin, Jr.

                    *                         Director
- ------------------------------------------
              David B. Pall

                    *                         Director
- ------------------------------------------
           Katharine L. Plourde
</TABLE>
    
 
                                      II-2
<PAGE>   116
 
   
<TABLE>
<CAPTION>
                SIGNATURE                                          TITLE
- ------------------------------------------    -----------------------------------------------
<C>                                           <S>
                    *                         Director
- ------------------------------------------
         Chesterfield F. Seibert

                    *                         Director
- ------------------------------------------
             Heywood Shelley

                    *                         Director
- ------------------------------------------
              Alan B. Slifka

          /s/ JAMES D. WATSON                 Director
                  
- ------------------------------------------
             James D. Watson

                    *                         Director
- ------------------------------------------
           Derek T.D. Williams

     *By: /s/ PETER SCHWARTZMAN
- ------------------------------------------
            Peter Schwartzman
             Attorney-in-Fact
</TABLE>
    
 
                                      II-3
<PAGE>   117
 
   
                               INDEX TO EXHIBITS
    
 
   
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                                              EXHIBIT
- -------       ------------------------------------------------------------------------------------
<S>      <C>  <C>
 2        --  Agreement and Plan of Reorganization and Merger, made on October 27, 1996, by and
              among Pall Corporation, Pall Acquisition Corporation and Gelman Sciences Inc.,
              included as Exhibit A to the Proxy Statement-Prospectus constituting Part I of this
              Registration Statement. The copy so included does not include the schedule to the
              Agreement and Plan of Reorganization and Merger listed in the table of contents
              thereto. The Registrant undertakes to furnish such schedule to the Commission upon
              its request.
 4(a)     --  Rights Agreement dated as of November 17, 1989, between the Registrant and United
              States Trust Company of New York, as Rights Agent, filed as Exhibit I to the
              Registrant's Registration Statement on Form 8-A (File No. 1-4311) dated September
              10, 1992, for the registration of the Common Share Purchase Rights pursuant to
              Section 12(b) of the Securities Exchange Act of 1934.*
 4(b)     --  Form of Exchange Agreement by and among the Registrant and the holders of certain
              options to purchase the common stock of Gelman, included as Exhibit C to the Proxy
              Statement-Prospectus constituting Part I of this Registration Statement.
          --  Note: The Registrant hereby agrees to provide the Commission, upon request, copies
              of such instruments defining the rights of holders of long-term debt of the
              Registrant and its subsidiaries as are specified in Item 601(b)(4)(iii)(A) of
              Regulation S-K.
 5        --  Opinion of Carter, Ledyard & Milburn with respect to the securities being registered
              hereunder.**
 8        --  Opinion of Godfrey & Kahn, S.C. with respect to certain Federal income tax matters.
23(a)     --  Consent of KPMG Peat Marwick LLP.
23(b)     --  Consent of Coopers & Lybrand L.L.P.
23(c)     --  Consent of Cleary Gull Reiland & McDevitt Inc.
23(d)     --  Consent of Carter, Ledyard & Milburn (included in Exhibit 5).**
23(e)     --  Consent of Godfrey & Kahn, S.C. (included in Exhibit 8).
24        --  Powers of Attorney.**
99        --  Form of Proxy and related forms of direction to trustees for employee benefit plans
              of Gelman.
</TABLE>
    
 
- ---------------
   
 * Incorporated herein by reference.
    
 
   
** Previously filed with this Registration Statement.
    

<PAGE>   1
 
                                                                       EXHIBIT 8
 
                              GODFREY & KAHN, S.C.
                                ATTORNEYS AT LAW
                             780 NORTH WATER STREET
                        MILWAUKEE, WISCONSIN 53202-3590
 
<TABLE>
<S>                                                         <C>
(414) 273-3500                                              With Offices in:
FAX (414) 273-5198
                                                            Milwaukee, Wisconsin
                                                            Appleton, Wisconsin
                                                            Green Bay, Wisconsin
                                                            Madison, Wisconsin
                                                            Oshkosh, Wisconsin
                                                            Sheboygan, Wisconsin
</TABLE>
 
   
                                                               December 27, 1996
    
 
Gelman Sciences Inc.
600 South Wagner Road
Ann Arbor, Michigan 48103
 
                 Re: Federal Income Tax Consequences of Merger
 
Gentlemen:
 
     We have acted as counsel for Gelman Sciences Inc. ("Gelman") in connection
with the negotiation and execution of the Agreement and Plan of Reorganization
and Merger dated October 27, 1996 (the "Agreement"), between Gelman and Pall
Corporation ("Pall"), pursuant to which Pall's wholly-owned, newly-formed
subsidiary, Pall Acquisition Corporation, a Michigan corporation ("Subsidiary"),
will be merged with and into Gelman (the "Merger"). This letter furnishes you
with our opinion as to certain federal income tax consequences of the Merger.
All capitalized terms used herein which are not otherwise defined have the same
meaning as in the Agreement.
 
     The following is a description of the relevant terms of the transaction
based on our examination of the Agreement and our understanding of the related
factual background. All terms not otherwise defined herein shall have the same
meaning as set forth in the Agreement.
 
PARTIES
 
     Gelman is a Michigan corporation; the Gelman Common Stock is listed on the
American Stock Exchange. Gelman designs, manufactures and markets a broad line
of specialty microfiltration products for the separation and purification of
liquids and gases.
 
     Pall is a New York corporation; the Pall Common Stock is listed on the New
York Stock Exchange. Pall is a worldwide supplier of fine filters, mainly made
by Pall using its high-quality filter media, and other fluid clarification
equipment for the removal of solid, liquid and gaseous contaminants from a wide
variety of liquids and gases.
 
PROPOSED TRANSACTION
 
     Pursuant to Section 1.1 of the Agreement, at the Effective Time, Subsidiary
will be merged with and into Gelman. Under Sections 3.1 and 3.2 of the
Agreement, the shares of Gelman Common Stock outstanding at the Effective Time,
other than shares held in treasury by Gelman or any subsidiary of Gelman, will
be converted into the right to receive the Merger Consideration. Under Sections
3.2 and 3.4 of the Agreement,
<PAGE>   2
 
Gelman Sciences Inc.
Page 2
each Gelman shareholder will receive cash in lieu of any fractional shares of
Pall Common Stock to which he would otherwise be entitled in the Merger.
 
     With regard to Gelman's purpose for entering into the Agreement, the Board
of Directors of Gelman believes (i) that the strategic position for Gelman
products should be enhanced by the Merger beyond that achievable by Gelman on a
stand-alone basis; (ii) Pall has a strong sales position outside the U.S. and
Gelman management hopes that Pall will be able to expand overseas sales of
Gelman's products and (iii) the filtration industry is consolidating and
companies with full product lines are more likely to prosper.
 
     From Pall's standpoint, the following benefits should be among those
resulting from the Merger: (i) Pall wants to expand into the laboratory area
which is a market in which Gelman has an established presence; (ii) Pall
believes that Gelman's strengths are complementary to Pall's and not overlapping
and that Pall will realize substantial efficiencies and significant cost savings
from the Merger which could not be accomplished by internal growth and (iii)
Pall expects its global distribution system to broaden the sales of certain of
Gelman's products.
 
FACTUAL REPRESENTATIONS
 
     In rendering our opinion, we have relied on certain written representations
made to us by Gelman, Pall and certain 5% or greater shareholders of Gelman.
 
CONCLUSIONS
 
     Based on (i) our examination of the Agreement, (ii) the foregoing
description and the representations, (iii) the foregoing description and the
representations made to us by Gelman, Pall and certain 5% or greater
shareholders of Gelman remaining true in all material respects at the Effective
Time and thereafter and (iv) assuming that the transaction is consummated in
accordance with the terms of the Agreement, it is our opinion that for federal
income tax purposes:
 
          1. The Merger will be a reorganization within the meaning of Section
     368(a)(1)(A) and (a)(2)(E) of the Internal Revenue Code of 1986, as amended
     (the "Code").
 
          2. Pursuant to Code Section 354(a)(1), the Gelman shareholders will
     recognize no gain or loss on the exchange of their Gelman Common Stock
     solely in exchange for Pall Common Stock.
 
          3. Pursuant to Code Section 358(a)(1), the basis of the Pall Common
     Stock received by the Gelman shareholders (including any fractional share
     interests to which they may be entitled) will be the same as the basis of
     the Gelman Common Stock surrendered in exchange therefor.
 
          4. Pursuant to Code Section 1223(1), the holding period of the Pall
     Common Stock to be received by the Gelman shareholders (including any
     fractional share interests to which they may be entitled) will include the
     period during which the Gelman Common Stock surrendered in exchange
     therefor is held, provided that the Gelman Common Stock surrendered is held
     as a capital asset at the Effective Time.
 
          5. The payment of cash to the Gelman shareholders in lieu of their
     fractional interests of Pall Common Stock will be treated as if the
     fractional shares were distributed as part of the exchange and then
     redeemed. These payments will be treated as having been received as
     distributions in full payment in exchange for stock redeemed as provided in
     Code Section 302(a) (Rev. Rul. 66-365, 1966-2 C.B. 116 and Rev. Proc.
     77-41, 1977-2 C.B. 574).
 
     Our opinion is not, nor should it be construed or relied upon as, a
guaranty, nor is it in any way binding on the Internal Revenue Service. It is
intended only to reflect our best professional judgment as to the matters set
forth herein as of the date hereof.
<PAGE>   3
 
Gelman Sciences Inc.
Page 3
   
     We consent to the use of this opinion as an exhibit to the Registration
Statement and to the references to this firm appearing in the Registration
Statement under the captions "Summary -- The Merger -- Certain U.S. Federal
Income Tax Consequences," "The Merger Agreement -- Conditions to the Merger,"
"Certain Tax Consequences" and "Legal Matters." In giving this consent, however,
we do not admit that we are "experts" within the meaning of Section 11 of the
Securities Act of 1933, as amended, or within the category of persons whose
consent is required by Section 7 of said Act.
    
 
                                          Very truly yours,
 
                                          GODFREY & KAHN, S.C.

<PAGE>   1
 
                                                                   EXHIBIT 23(A)
 
                        CONSENT OF INDEPENDENT AUDITORS
 
Board of Directors
Pall Corporation:
 
     We consent to the incorporation by reference, in this registration
statement on Form S-4 of Pall Corporation (Registration No. 333-17417), of our
reports dated September 3, 1996, relating to the consolidated balance sheets of
Pall Corporation and subsidiaries as of August 3, 1996, and July 29, 1995, and
the related consolidated statements of earnings, stockholders' equity and cash
flows for the years ended August 3, 1996, July 29, 1995 and July 30, 1994 and
related schedule, which reports are incorporated by reference or appear in the
Annual Report on Form 10-K of Pall Corporation for the fiscal year ended August
3, 1996.
 
     Such reports refer to the adoption by the Company of the Financial
Accounting Standards Board's Statement No. 112, "Employers' Accounting for
Postemployment Benefits" in fiscal year 1995.
 
     We also consent to the reference to our firm under the heading of "Experts"
in the registration statement.
 
                                          KPMG PEAT MARWICK LLP
 
Jericho, New York
December 27, 1996

<PAGE>   1
 
                                                                   EXHIBIT 23(B)
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
   
     We consent to the incorporation by reference in this registration statement
on Form S-4 of our report dated September 30, 1996, on our audits of the
financial statements and financial statement schedule of Gelman Sciences Inc. We
also consent to the references to our firm under the caption "Experts."
    
 
                                          COOPERS & LYBRAND L.L.P.
 
Detroit, Michigan
   
December 23, 1996
    

<PAGE>   1
 
                                                                   EXHIBIT 23(C)
 
                                    CONSENT
 
   
     We hereby consent to the inclusion of our written fairness opinion dated
December 27, 1996, in the Proxy Statement-Prospectus constituting Part I of the
Registration Statement on Form S-4 of Pall Corporation ("Pall") relating to the
issuance of up to 11,323,938 shares of Pall common stock in the merger of Gelman
Sciences Inc. and a wholly-owned subsidiary of Pall. We also consent to the
references to us in the said Proxy Statement-Prospectus appearing in the letter
to stockholders and under the captions "Summary -- The Merger -- Opinion of
Gelman's Financial Advisor" and "The Merger -- Background of the Merger" and
"-- Opinion of Gelman's Financial Advisor." In giving such consent, we do not
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,
or the rules and regulations of the Securities and Exchange Commission
thereunder, nor do we 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.
    
 
Dated as of this 27th day of December, 1996
 
                                          CLEARY GULL REILAND & McDEVITT INC.
 
                                          By: /s/        CHRIS BARNES
 
                                            ------------------------------------
                                                  Chris Barnes, Principal

<PAGE>   1
 
                                                                      EXHIBIT 99

                                 GELMAN SCIENCES INC.
                           SPECIAL MEETING OF STOCKHOLDERS
 
                                   FEBRUARY 3, 1997
 
    P
             THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS.
 
         The undersigned hereby appoints Charles Gelman and Kim A. Davis, and
         each of them, as proxies, each with the
    R
         power to appoint his substitute, and hereby authorizes each of them
         to represent and to vote, as designated hereon, all of the shares of
         common stock of Gelman Sciences Inc. ("Gelman") which the
         undersigned is entitled
    O
         to vote at a Special Meeting of Stockholders of Gelman to be held on
         Monday, February 3, 1997, and at any adjournment or postponement
         thereof.
    X
         THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER
         DIRECTED HEREIN BY THE UNDERSIGNED STOCKHOLDER. IF NO DIRECTION IS
         MADE, THIS PROXY WILL BE VOTED "FOR" APPROVAL AND ADOPTION OF THE
         AGREEMENT AND
    Y
         PLAN OF REORGANIZATION AND MERGER BY AND AMONG PALL CORPORATION,
         PALL ACQUISITION CORPORATION AND GELMAN, AS MORE FULLY DESCRIBED IN
         THE ACCOMPANYING PROXY STATEMENT-PROSPECTUS AND INCLUDED THEREIN AS
         EXHIBIT A.
 
         THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR PROPOSAL 1.
 
                                                     (change of address)
 
                                                -----------------------------
 
                                                -----------------------------
 
                                                -----------------------------
 
                                                (If you have written in the
                                                above space, please mark the
                                                corresponding box on the
                                                reverse side of this card.)

                                                                 ---------
                                                                    SEE
                                                                  REVERSE
                                                                   SIDE
                                                                 ---------
     ------  PLEASE MARK YOUR 
       X     VOTES AS IN THIS
     ------  EXAMPLE.           

1. Proposal to approve and adopt the Agreement and Plan of Reorganization and 
   Merger made on October 27, 1996, by and among Pall Corporation, Pall 
   Acquisition Corporation and Gelman, and the transactions contemplated 
   thereby.

               FOR                AGAINST               ABSTAIN

               / /                  / /                   / /

   
2. In their discretion, the Proxies are authorized to vote upon such other 
   business as may properly come before the meeting or any adjournment or 
   postponement thereof.
                                                

                                           / / Change of Address.

                                           / / I plan to attend the meeting.
                                                                              
                                           The undersigned hereby revokes all
                                           proxies heretofore given by the
                                           undersigned to vote at the Special
                                           Meeting or pany adjournment or
                                           postponement thereof.

                                           Please sign exactly as your name
                                           appears below. When shares are held
                                           by joint tenants, both should sign.
                                           When signing as attorney, executor,
                                           administrator, trustee or guardian,
                                           please give full title as such. If a
                                           corporation, please sign in full
                                           corporate name by President or other
                                           authorized officer. If a
                                           partnership, please sign in
                                           partnership name by authorized
                                           person.
 
                                               
                                           -------------------------------
                                           SIGNATURE(S)          DATE
 
                                           --------------------------------
                                           SIGNATURE(S)          DATE
 
                                              Please mark, sign, date and
                                            return this Proxy Card promptly,
                                              using the envelope provided.
<PAGE>   2
                              GELMAN SCIENCES INC.
                         SPECIAL MEETING OF STOCKHOLDERS
                                FEBRUARY 3, 1997

The undersigned, as a participant in the Gelman Sciences Employee Stock
Ownership Plan (the "ESOP"), hereby directs the Trustees to vote (in person or
by proxy) the number of shares of Common Stock allocated and vested in the
undersigned's account under the ESOP at the Special Meeting of Stockholders of
Gelman Sciences Inc. ("Gelman") to be held on Monday, February 3, 1997 and at
any adjournment or postponement thereof.

THIS DIRECTION CARD WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED
HEREIN BY THE UNDERSIGNED STOCKHOLDER. IF NO
DIRECTION IS MADE, THE TRUSTEES WILL VOTE THE
PROXY "FOR" APPROVAL OF THE AGREEMENT AND              (change of address)
PLAN OF REORGANIZATION AND MERGER BY AND
AMONG GELMAN, PALL CORPORATION ("PALL") AND       ______________________________
PALL ACQUISITION CORPORATION, A SUBSIDIARY OF
PALL ("SUB"), AS MORE FULLY DESCRIBED IN THE      ______________________________
ACCOMPANYING PROXY STATEMENT-PROSPECTUS.
                                                  ______________________________
THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR
PROPOSAL 1.                                       ______________________________
                                                  (If you have written in the
THIS DIRECTION CARD IS SOLICITED BY CHARLES       above space, please mark the
GELMAN AND JACK GEISHECKER, JR. AS TRUSTEES       corresponding box on the
OF THE ESOP, ON BEHALF OF THE BOARD OF            reverse side of this card.)
DIRECTORS. THESE CONFIDENTIAL VOTING
INSTRUCTIONS WILL BE SEEN ONLY BY THE
TRUSTEES AND THEIR AUTHORIZED
REPRESENTATIVES. THE SHARES REPRESENTED BY
THIS DIRECTION CARD WILL BE VOTED IN
ACCORDANCE WITH THE SPECIFICATIONS MADE
HEREIN. IF NO DIRECTION IS MADE, THE SHARES
WILL BE VOTED FOR PROPOSAL 1.
                                                                     SEE REVERSE
             (Continued and to be dated and signed on reverse side)      SIDE




[ X ] PLEASE MARK YOUR
      VOTE AS IN THIS
      EXAMPLE.



<TABLE>

<S>                                                <C>     <C>         <C>            <C>
1.   Proposal to approve and adopt the             FOR     AGAINST     ABSTAIN        2.   In their discretion, the Trustees are
     Agreement and Plan of Reorganization and      [ ]       [ ]         [ ]               authorized to vote upon such other
     Merger by and among Gelman, Pall and Sub                                              business related to the Merger Agreement
     made on October 27, 1996 and the                                                      as may properly come before the meeting
     transactions contemplated thereby.                                                    or any adjournment or postponement
                                                                                           thereof.
</TABLE>


                                             [  ]  Change of address.

                                             [  ]  I plan to attend the meeting.




<TABLE>
<S>                                                            <C>              <C>
SIGNATURE(S) _________________________________________________  DATE _______    PLEASE MARK, SIGN, DATE AND RETURN THIS
                                                                                DIRECTION CARD PROMPTLY, USING THE ENCLOSED ENVELOPE

SIGNATURE(S) _________________________________________________  DATE _______
</TABLE>

NOTE: Please date this direction card and sign exactly as your name appears
      hereon. If the shares are registered in more than one name, each joint
      owner should sign. When signing as attorney, administrator, executor,
      personal representative, guardian or trustee, please add your title to the
      signature. PLEASE SIGN AND RETURN THIS DIRECTION CARD.
<PAGE>   3
                              GELMAN SCIENCES INC.
                         SPECIAL MEETING OF STOCKHOLDERS
                                FEBRUARY 3, 1997

The undersigned, as a participant in the Gelman Sciences 401(k) Savings Plan
(the "Plan"), hereby directs the Trustee to vote (in person or by proxy) the
number of shares of Common Stock credited to the undersigned's account under the
Plan at the Special Meeting of Stockholders of Gelman Sciences Inc. ("Gelman")
to be held on Monday, February 3, 1997 and at any adjournment or postponement
thereof.

THIS DIRECTION CARD WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED
HEREIN BY THE UNDERSIGNED STOCKHOLDER. IF NO
DIRECTION IS MADE, THE TRUSTEE WILL VOTE THE           (change of address)
PROXY "FOR" APPROVAL OF THE AGREEMENT AND
PLAN OF REORGANIZATION AND MERGER BY AND          ______________________________
AMONG GELMAN, PALL CORPORATION ("PALL") AND
PALL ACQUISITION CORPORATION, A SUBSIDIARY OF     ______________________________
PALL ("SUB"), AS MORE FULLY DESCRIBED IN THE
ACCOMPANYING PROXY STATEMENT-PROSPECTUS.          ______________________________

THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR      ______________________________
PROPOSAL 1.                                       (If you have written in the
                                                  above space, please mark the
THIS DIRECTION CARD IS SOLICITED BY FIDELITY      corresponding box on the
MANAGEMENT TRUST COMPANY ON BEHALF OF THE         reverse side of this card.)
BOARD OF DIRECTORS. THESE CONFIDENTIAL VOTING
INSTRUCTIONS WILL BE SEEN ONLY BY AUTHORIZED
PERSONNEL OF THE TRUSTEE. THE SHARES
REPRESENTED BY THIS DIRECTION CARD WILL BE
VOTED IN ACCORDANCE WITH THE SPECIFICATIONS
MADE HEREIN. IF NO DIRECTION IS MADE, THE
SHARES WILL BE VOTED FOR PROPOSAL 1.
                                                                     SEE REVERSE
             (Continued and to be dated and signed on reverse side)     SIDE





[ X ] PLEASE MARK YOUR
      VOTE AS IN THIS
      EXAMPLE.
<TABLE>

<S>                                               <C>      <C>          <C>          <C>
1.   Proposal to approve and adopt the            FOR      AGAINST      ABSTAIN      2.   In its discretion, the Trustee is
     Agreement and Plan of Reorganization and     [ ]        [ ]          [ ]             authorized to vote upon such other
     Merger by and among Gelman, Pall and Sub                                             business related to the Merger Agreement
     made on October 27, 1996 and the                                                     as may properly come before the meeting
     transactions contemplated thereby.                                                   or any adjournment or postponement
                                                                                          thereof.
</TABLE>

                                               [ ] Change of address.

                                               [ ] I plan to attend the meeting.

<TABLE>
<S>                                                             <C>             <C>
SIGNATURE(S) _________________________________________________  DATE _______    PLEASE MARK, SIGN, DATE AND RETURN THIS DIRECTION
                                                                                CARD PROMPTLY, USING THE ENCLOSED ENVELOPE.
SIGNATURE(S) _________________________________________________  DATE _______
</TABLE>

NOTE: Please date this direction card and sign exactly as your name appears
      hereon. If the shares are registered in more than one name, each joint
      owner should sign. When signing as attorney, administrator, executor,
      personal representative, guardian or trustee, please add your title to the
      signature. PLEASE SIGN AND RETURN THIS DIRECTION CARD.


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