THERMO PROCESS SYSTEMS INC
8-K, 1995-05-25
TESTING LABORATORIES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C.  20549

                   ___________________________________________


                                    FORM 8-K

                                 CURRENT REPORT



                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934



                                 Date of Report
                       (Date of earliest event reported):

                                  May 10, 1995

                    ________________________________________


                           THERMO PROCESS SYSTEMS INC.
             (Exact name of Registrant as specified in its charter)


   Delaware                        1-9549                           04-2925807
   (State or other               (Commission                  (I.R.S. Employer
   jurisdiction of               File Number)           Identification Number)
   incorporation or
   organization)


   12068 Market Street                                                   48150
   Livonia, Michigan                                                (Zip Code)
   (Address of principal executive offices)


                                 (617) 622-1000
                         (Registrant's telephone number
                              including area code)
PAGE
<PAGE>




   Item 2.  Acquisition or Disposition of Assets
            ------------------------------------

        On May 10, 1995, Thermo Process Systems Inc. (the "Company") acquired
   substantially all of the assets of Lancaster Laboratories, Inc. and its
   affiliate Clewmark Holdings (together, "Lancaster Laboratories").
   Lancaster Laboratories, based in Lancaster, Pennsylvania, is a provider of
   high-quality analytical services to the environmental, food and
   pharmaceutical industries.

        The base purchase price for the assets was $16,760,000 in cash, plus 
   the assumption by the Company of approximately $5,400,000 in bank
   indebtedness existing as of the closing of the acquisition.  The purchase
   price is subject to a post-closing adjustment, and will either be (i)
   increased by the amount by which Lancaster Laboratories' net book value
   as of the closing exceeds $11,108,000; or (ii) decreased by the amount
   by which $11,108,000 exceeds Lancaster Laboratories' net book value as
   of the closing.  The Company has also agreed to pay an amount, not to
   exceed $600,000, equal to the amount by which the sum of (A) Lancaster
   Laboratories' division income (earnings before the corporate services fee
   payable to Thermo Electron Corporation, amortization of good will, 
   interest and income taxes for the period beginning October 1, 1994 and
   ending on the closing date, and (B) the division income generated by 
   Lancaster Laboratories' business (excluding the corporate services fee
   payable to Thermo Electron Corporation and the amortization of goodwill
   acquired by the Company in this acquisition) for the period beginning on
   the closing date and ending September 30, 1995, are in excess of
   $4,500,000.  In no event will the aggregate purchase price, including
   bank indebtedness assumed by the Company, exceed $25,000,000. 

      The acquisition was made pursuant to an Asset Purchase Agreement
   May 10, 1995, among Thermo Analytical Inc. (a wholly owned the Company);
   Lancaster Laboratories, Inc. and Clewmark Holdings (as sellers); and
   Earl H. Hess, Anita F. Hess, Kenneth E. Hess, J. Wilson Hershey and
   Carol D. Hess (as the principal owners of Lancaster Laboratories).
   The purchase price was based on the Company's determination of the
   fair market value of Lancaster Laboratories' business, and the of the
   agreement were determined by arms' length negotiation among parties.

        The Company has no present intention to use Lancaster Laboratories'
   plant, equipment or other assets for purposes materially different from the
   purposes for which such assets were used prior to the acquisition. However,
   the Company will review Lancaster Laboratories' business and assets,
   corporate structure, capitalization, operations, properties, policies,
   management and personnel and, upon completion of this review, may develop
   alternative plans or proposals, including mergers, transfers of a material
   amount of assets or other transactions or changes relating to such
   business.

        Lancaster Laboratories had gross revenues of approximately $30,000,000
   for the fiscal year ended September 30, 1994.

        The cash portion of the base purchase price paid by the Company was 
   derived from cash distributed to the Company upon the dissolution of 
   the Thermo Terra Tech joint venture on May 9, 1995.






                                        2
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   Item 7.  Financial Statements, Pro Forma Combined Condensed Financial
            Information and Exhibits

            (a) Financial Statements of Business Acquired: as it is
                impracticable to file such information at this time, it will
                be filed by amendment on or prior to July 24, 1995.

            (b) Pro Forma Combined Condensed Financial Information: as it is
                impracticable to file such information at this time, it will
                be filed by amendment on or prior to July 24, 1995.

            (c) Exhibits

                1. Asset Purchase Agreement by and among Thermo Analytical
                   Inc. (as Buyer); Lancaster Laboratories, Inc. and Clewmark
                   Holdings (as Sellers); and Earl H. Hess, Anita F. Hess,
                   Kenneth E. Hess, J. Wilson Hershey and Carol D. Hess (as
                   the principal owners of Sellers).  Schedules and exhibits
                   to the agreement (each of which are identified in the
                   agreement) are omitted in reliance on Rule 601(b)(2) of
                   Regulation S-K.  The registrant hereby undertakes to
                   furnish such schedules and exhibits to the Commission
                   supplementally upon request.

































                                        3
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<PAGE>




                                   SIGNATURES


        Pursuant to the requirements of the Securities Exchange Act of 1934,
   the Registrant has duly caused this report to be signed on its behalf by
   the undersigned thereunto duly authorized, on this 24th day of May 1995.



                                             THERMO PROCESS SYSTEMS INC.


                                             By:  /s/ John P. Appleton     
                                                 John P. Appleton
                                                 President and Chief 
                                                 Executive Officer











































                                        4








                                                                Exhibit 1
                                                                ---------







        ________________________________________________________________
        ________________________________________________________________


                            ASSET PURCHASE AGREEMENT




                                  by and among



                             Thermo Analytical Inc.
                                   (as Buyer),

                          Lancaster Laboratories, Inc.,
                                       and
                                Clewmark Holdings
                                  (as Sellers),

                                       and

                                  Earl H. Hess
                                  Anita F. Hess
                                 Kenneth E. Hess
                                J. Wilson Hershey
                                  Carol D. Hess

                      (as the principal owners of Sellers)

                           effective as of May 1, 1995

        ________________________________________________________________

        ----------------------------------------------------------------
PAGE
<PAGE>





                            ASSET PURCHASE AGREEMENT

             THIS ASSET PURCHASE AGREEMENT ("Agreement") is made and
        entered into this 10th day of May, 1995, but effective for all
        purposes as of May 1, 1995, by and among THERMO ANALYTICAL INC.,
        a Delaware corporation ("Buyer"); LANCASTER LABORATORIES, INC., a
        Pennsylvania corporation ("LLI"); CLEWMARK HOLDINGS, a
        Pennsylvania general partnership ("Clewmark"); and EARL H. HESS,
        ANITA F. HESS, KENNETH E. HESS, J. WILSON HERSHEY and CAROL D.
        HESS, who comprise a majority-in-interest of the shareholders of
        LLI and a majority-in-interest of the partners of Clewmark (the
        above-named individuals are referred to in this Agreement
        individually and collectively as the "Shareholders").


                                   BACKGROUND

             LLI is a Pennsylvania corporation engaged in the business of
        providing analytical, research and development, and consulting
        services primarily in the environmental, foods and pharmaceutical
        fields.  Clewmark is a Pennsylvania general partnership engaged
        in the business of leasing equipment and real estate.  A
        substantial portion of Clewmark's assets are leased to LLI.  

             Buyer is a Delaware corporation.  Buyer is a wholly-owned
        subsidiary of Thermo Process Systems Inc., a Delaware
        corporation.

             LLI and Clewmark (referred to in this Agreement individually
        and collectively as "Sellers") desire to sell to Buyer, and Buyer
        desires to purchase from Sellers, certain of the assets of
        Sellers, and Buyer desires to assume certain specifically
        enumerated liabilities of Sellers, all upon and subject to the
        terms and conditions hereinafter set forth in this Agreement.


                                    AGREEMENT

             NOW, THEREFORE, in consideration of the foregoing and of the
        mutual promises, covenants, representations, warranties and
        agreements herein contained, and for other good and valuable
        consideration, the receipt and adequacy of which are hereby
        acknowledged, the parties hereto, intending to be legally bound,
        agree as follows:

                                    ARTICLE I

                           PURCHASE AND SALE OF ASSETS

             Section 1.1.  Sale and Purchase of Assets.  Simultaneously
        with the execution and delivery of this Agreement, and subject to
        the terms and conditions contained in this Agreement, Sellers
        shall sell, convey, transfer, assign and deliver or cause to be
        sold, conveyed, transferred, assigned and delivered to Buyer, and

                                        1
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<PAGE>





        Buyer shall purchase from Sellers, for the purchase price
        specified in Section 1.3 and subject to the terms and conditions
        hereof, the "Assets," as hereinafter defined.  The term "Assets"
        shall mean all of Sellers' right, title and interest in and to,
        as of the Closing, all of the assets of every kind and
        description, whether tangible or intangible, wheresoever situated
        and whether or not specifically referred to herein or in any
        instrument of conveyance delivered pursuant hereto, primarily
        used in, employed by or related to LLI's business, including,
        without limitation, the following:

                  (a)  Cash and Cash Equivalents.  All cash, cash in
        banks, cash equivalents, deposits, investments, securities,
        funds, certificates of deposit, drafts, checks and similar
        instruments outstanding and in existence on the Closing Date (as
        defined in Section 2.1 hereof), other than the proceeds arising
        from the transaction contemplated in this Agreement.

                  (b)  Accounts and Notes Receivable.  All accounts and
        notes receivable of Sellers existing on the Closing Date as well
        as Sellers' right to payment for services performed (in whole or
        in part) but not yet billed as of the Closing.

                  (c)  Laboratory Equipment.  All laboratory equipment
        and laboratory supplies owned by Sellers.

                  (d)  Office Equipment.  All office furniture, fixtures,
        office equipment and office supplies and computer hardware owned
        by Sellers.

                  (e)  Motor Vehicles.  All cars, trucks and other motor
        vehicles owned or leased by Sellers.

                  (f)  Leased Property.  All right, title and interest of
        Sellers under leases for personal property or real property
        included in the Assumed Liabilities (as defined in Section 1.3(d)
        hereof).

                  (g)  Real Property.  All real property, including
        structures and improvements thereon, owned by Sellers
        beneficially or of record;

                  (h)  Patents and Trademarks.  All right, title and
        interest in, under or to all patents, trademarks, service marks,
        copyrights, trade names and logos, and applications therefor.

                  (i)  Licenses.  All of Sellers' existing permits,
        licenses, regulatory approvals and franchises of or from any
        national, regional, state or local government or authority (to
        the extent transfer is permitted by law). 

                  (j)  Other Intellectual Property.  All inventions,
        discoveries (whether patentable or unpatentable), processes,
        designs, know-how, trade secrets, proprietary data, customer and

                                        2
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<PAGE>





        supplier lists and other intellectual property of all kinds owned
        by or licensed to Sellers. 

                  (k)  Miscellaneous Supplies.  All of Sellers'
        miscellaneous supplies not included in Sections 1.1(c) or 1.1(d)
        above, as well as all catalogs, brochures, shipping and packaging
        materials and labels, shipping equipment, graphics, art work,
        photographic film, slides, negatives, color separations,
        printer's and photographer's plates and so-called "camera ready
        materials" and sales and advertising materials.

                  (l)  Other.  To the extent not covered by the
        foregoing, and except as set forth on Exhibit A hereto, all
        things and rights which, as of the Closing Date, are owned by
        Sellers.

             Section 1.2.  Excluded Assets.  Notwithstanding anything
        contained in Section 1.1 to the contrary, the following assets
        are specifically excluded from the Assets being transferred to
        Buyer pursuant to this Agreement (collectively, the "Excluded
        Assets"):

                  (a)  The shares of capital stock of Mountain States
        Analytical Inc., a Utah corporation ("MSAI"), owned by Sellers; 

                  (b)  The note receivable due from MSAI and all accrued
        interest thereon;

                  (c)  The real property, including structures and
        improvements thereon, owned by Clewmark upon which the guest
        house is located;

                  (d)  The family center equipment and the equipment
        leased to MSAI as set forth on Exhibit A; and

                  (e)  All real property, including structures and
        improvements thereon, owned by the Shareholders in their
        individual names; provided, however, that the Assets shall
        include all of Sellers' leasehold interests in and to all real
        property owned by the Shareholders in their individual names
        which property is (i) leased to Sellers and (ii) included in the
        Assumed Liabilities, as defined in Section 1.3(d).

             Section 1.3.  Purchase Price.  In exchange for the Assets,
        and subject to the terms and conditions contained in this
        Agreement, Buyer agrees to pay to Sellers an aggregate amount, in
        no event to exceed Twenty-Five Million Dollars ($25,000,000) (the
        "Purchase Price"), to be calculated and paid as follows:

                  (a)  Base Purchase Price.  Buyer agrees to pay to
        Sellers Sixteen Million Seven Hundred Sixty Thousand Dollars
        ($16,760,000) (the "Base Purchase Price") by wire transfer at the
        Closing. 


                                        3
PAGE
<PAGE>





                  (b)  Post-Closing Adjustment.

                       (i)  No later than 30 days after the Closing,
             Buyer and Sellers shall jointly prepare an unaudited balance
             sheet for Sellers reflecting the assets, minus the Excluded
             Assets, and liabilities of Sellers immediately prior to the
             Closing (the "Closing Balance Sheet").  The Base Purchase
             Price shall then be either:

                            (A)  increased by the amount by which the Net
                  Book Value of the Assets (as defined below) as
                  calculated from the Closing Balance Sheet exceeds
                  Eleven Million One Hundred Eight Thousand Dollars
                  ($11,108,000) (the "Post-Closing Payment"); or 

                            (B)  decreased by the amount by which Eleven
                  Million One Hundred Eight Thousand Dollars
                  ($11,108,000) exceeds the Net Book Value of the Assets
                  as calculated from the Closing Balance Sheet (the
                  "Post-Closing Reduction") (collectively, the
                  Post-Closing Payment and Post-Closing Reduction shall
                  be referred to as the "Post-Closing Adjustment");

                       (ii)  Upon determination of the Post-Closing
             Adjustment, Buyer or Sellers, as the case may be, shall pay
             the amount thereof to the other, together with interest from
             the Closing Date calculated at a rate equal to the rate
             announced from time to time by First National Bank of Boston
             as its "base rate" (or the legal rate of interest, if
             lower), by check, wire transfer or other method acceptable
             to the party to which the Post-Closing Adjustment is due.

                       (iii)  If Buyer and Sellers are unable to agree
             upon the Post-Closing Adjustment by the close of business on
             the 30th day after the Closing, then the parties shall
             retain a mutually acceptable independent certified public
             accounting firm to determine the Post-Closing Adjustment.
             The Post-Closing Adjustment as so determined shall be
             binding upon the parties for all purposes.  Buyer shall bear
             one-half (1/2), and Sellers shall bear one-half (1/2), of
             the cost of retaining the independent certified public
             accounting firm selected by the parties to determine the
             Post-Closing Adjustment.
              
                       (iv)  For purposes of this Agreement, the Net Book
             Value of the Assets is defined as:

                            (A)  the total net book value of Sellers'
                  Assets as of the Closing, less 

                            (B)  the sum of (I) twenty percent (20%) of
                  the net book value of accounts receivable with an
                  invoice date more than five (5) months, but less than
                  or equal to seven (7) months, prior to the Closing

                                        4
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<PAGE>





                  Date, (II) forty percent (40%) of the net book value of
                  accounts receivable with an invoice date more than
                  seven (7) months, but less than or equal to  nine (9)
                  months, prior to the Closing Date, (III) seventy
                  percent (70%) of the net book value of accounts
                  receivable with an invoice date more than nine (9)
                  months, but less than or equal to twelve (12) months,
                  prior to the Closing Date, and (IV) one hundred percent
                  (100%) of the net book value of accounts receivable
                  with an invoice date more than twelve (12) months prior
                  to the Closing Date.  (The sum of the allowance for
                  uncollectible accounts receivable as calculated in
                  accordance with this subsection is hereinafter referred
                  to in this Agreement as the "Allowance For
                  Uncollectible Accounts Receivable."), less

                            (C)  the Assumed Liabilities, as defined in
                  Section 1.3(d);

             all as reflected on a balance sheet prepared in accordance
        with generally accepted accounting principles applied on a
        consistent basis.

                  (c)  Earn Out.

                       (i)  Buyer shall pay to Sellers an additional
             payment not to exceed Six Hundred Thousand Dollars
             ($600,000) (the "Earn-Out") equal to the amount by which, if
             at all, the sum of (A) Sellers' earnings before interest and
             income taxes for the period beginning October 1, 1994 and
             ending on the Closing Date, and (B) Buyer's division income
             (as defined by Thermo Electron Corporation for internal
             reporting purposes, excluding the amortization of goodwill
             acquired by Buyer in this transaction) for the period
             beginning on the Closing Date and ending September 30, 1995,
             are in excess of Four Million Five Hundred Thousand Dollars
             ($4,500,000).

                       (ii)  Simultaneously with the calculation of the
             Earn-Out, Buyer shall pay to Sellers ninety percent (90%) of
             that portion of any accounts receivable collected by Buyer
             which were included in the Allowance For Uncollectible
             Accounts Receivable at the Closing.

                  (d)  Assumption of Liabilities.  Subject to the terms
        and conditions contained in this Agreement, Buyer shall, at the
        Closing, assume and agree to pay or perform, or cause to be paid
        or performed, only those obligations and liabilities of Sellers
        that exist on the Closing Balance Sheet (in the aggregate, the
        "Assumed Liabilities").  Notwithstanding the foregoing, Buyer
        shall not assume any bank indebtedness in excess of Five Million
        Five Hundred Thousand Dollars ($5,500,000), net of any cash which
        may exist on the Closing Balance Sheet (the "Net Bank
        Indebtedness").  The Shareholders shall cause any Net Bank

                                        5
PAGE
<PAGE>





        Indebtedness in excess of Five Million Five Hundred Thousand
        Dollars ($5,500,000) to be paid prior to Closing.  Buyer will not
        assume any liabilities of Sellers other than the Assumed
        Liabilities.

                  (e)  Maximum Purchase Price.  Notwithstanding anything
        to the contrary in this Agreement, the sum of the Base Purchase
        Price, the Post-Closing Payment, the Earn-Out and the Net Bank
        Indebtedness shall not exceed Twenty-Five Million Dollars
        ($25,000,000).

             Section 1.4.  Allocation of Purchase Price.  The Purchase
        Price shall be allocated among the Assets as set forth in the
        Allocation Schedule attached hereto as Exhibit B (the "Allocation
        Schedule").  The Allocation Schedule shall be binding upon Buyer
        and Sellers for all purposes, including federal tax purposes, and
        the parties agree not to take a contrary position on any tax
        return or any documents filed by any of the parties with federal,
        state or local authorities.

             Section 1.5.  Guaranty of Post-Closing Payments.  Thermo
        Process Systems Inc. hereby unconditionally guarantees and agrees
        to become surety for the full and timely payment by Buyer of the
        Post-Closing Payment, the Earn-Out and the Assumed Liabilities.


                                   ARTICLE II

                                     CLOSING

             Section 2.1.  Time and Place of Closing.  The closing of the
        transactions contemplated by this Agreement (the "Closing") shall
        take place effective as of May 1, 1995 (the "Closing Date").

             Section 2.2.  Action to be Taken by Buyer at the Closing.
        At the Closing, in addition to the taking of such other action as
        may be provided in this Agreement, Buyer shall (i) deliver the
        Base Purchase Price to Sellers (to be divided between LLI and
        Clewmark in accordance with Exhibit B hereof), (ii) deliver to
        Sellers such instruments of assumption of liabilities, dated the
        Closing Date and in form and substance reasonably satisfactory to
        Sellers' counsel, as shall in the judgment of such counsel be
        sufficient to vest in Buyer the obligation to satisfy and
        discharge the Assumed Liabilities, and (iii) deliver the closing
        certificates, documents and opinions of counsel as may be
        requested by counsel to Sellers.

             Section 2.3.  Action to be Taken by Sellers and the
        Shareholders at the Closing.  At the Closing, in addition to the
        taking of such other action as may be provided in this Agreement,
        (i) Sellers shall deliver to Buyer such deeds, bills of sale and
        other instruments of conveyance, transfer and assignment, dated
        the Closing Date, and in form and substance reasonably
        satisfactory to Buyer's counsel, as shall in the judgment of such

                                        6
PAGE
<PAGE>





        counsel be sufficient to vest in Buyer all of the right, title
        and interest in and to the Assets, (ii) the Shareholders shall
        each execute a noncompetition agreement in the form of Exhibit C
        hereto and (iii) Sellers and the Shareholders shall deliver the
        closing certificates, documents and opinions of counsel as may be
        requested by counsel to Buyer.

             Section 2.4.  Additional Action to Assure Transfers.
        Nothing in this Agreement shall be construed to assign any
        contract, right, commitment, agreement, permit, franchise, or
        claim included in the Assets (individually, a "Purchased Contract
        Right") which is by its terms or by law nonassignable without the
        consent of the other party or parties thereto, unless such
        consent shall have been given, or as to which all the remedies
        for the enforcement thereof enjoyed by Sellers would not, as a
        matter of law, pass to Buyer as an incident of the assignments
        provided for by this Agreement.  In order, however, to provide
        Buyer the full realization and value of every Purchased Contract
        Right of the character hereinbefore described, Sellers at and
        after the Closing will, at the request and under the direction of
        Buyer and in the name of Sellers or otherwise as Buyer shall
        specify, take or cause to be taken all such action (including
        without limitation the appointment of Buyer as attorney-in-fact
        for Sellers, but with powers limited to the specific purposes
        contemplated hereby) and do or cause to be done all such things
        as shall in the reasonable opinion of Buyer or its counsel be
        necessary or proper to (a) assure that the rights of Sellers
        under all Purchased Contract Rights shall be preserved for the
        benefit of Buyer, and (b) facilitate receipt by Buyer of the
        consideration to which Sellers would otherwise be entitled in and
        under all Purchased Contract Rights, which consideration shall be
        held for the benefit of, and shall be delivered to, Buyer.  


                                   ARTICLE III

                         REPRESENTATIONS AND WARRANTIES

             Section 3.1.  Definitions.  The term "basis", when used
        below, shall mean any past or present fact, situation,
        circumstance, status, condition, activity, practice, plan,
        occurrence, event, incident, action, failure to act or
        transaction that forms or could form the basis for any specified
        consequence.  The term "ordinary course of business", when used
        below, shall mean the ordinary course of business of Sellers
        consistent with their past custom and practice.

             Section 3.2.  Representations and Warranties.  Sellers and
        the Shareholders hereby jointly and severally represent and
        warrant to Buyer that, except as set forth on the disclosure
        schedule attached hereto as Exhibit D (the "Disclosure Schedule")
        (specifically identifying the relevant subsection hereof):



                                        7
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                  (a)  Authority.  Sellers and the Shareholders have full
        right, power, capacity and authority to execute, deliver and
        perform this Agreement (and the other agreements, documents and
        certificates executed and delivered pursuant to this Agreement
        (together, the "Sellers' Documents") and to consummate the
        transactions contemplated hereby and thereby.  The execution,
        delivery and performance of this Agreement and Sellers' Documents
        and the consummation of the transactions contemplated hereby and
        thereby have been duly and validly authorized by all necessary
        corporate and partnership action on the part of Sellers.  This
        Agreement and Sellers' Documents constitute the valid and binding
        obligations of Sellers and the Shareholders, enforceable against
        them in accordance with the terms hereof and thereof.  Neither
        the execution, delivery and performance of this Agreement or of
        Sellers' Documents, nor the consummation of the transactions
        contemplated hereby and thereby will (i) conflict with or result
        in a violation, breach, termination or acceleration of, or
        default under (or would result in a violation, breach,
        termination, acceleration or default with the giving of notice or
        passage of time, or both) any of the terms, conditions or
        provisions of the Certificate of Incorporation or Bylaws of LLI,
        as amended, of the Partnership Agreement of Clewmark, or of any
        note, bond, mortgage, indenture, license, agreement or other
        instrument or obligation to which Sellers or the Shareholders are
        a party or by which Sellers or the Shareholders, or any of their
        respective properties or assets may be bound or affected; (ii)
        result in the violation of any order, writ, injunction, decree,
        statute, rule or regulation applicable to Sellers or the
        Shareholders, or their respective properties or assets; (iii)
        result in the imposition of any lien, encumbrance, charge or
        claim upon any of Sellers' assets or upon the Shareholders'
        assets; or (iv) entitle any employee to severance or other
        payments by Sellers or create any other obligation to an
        employee, including an increase in benefits.  Except for the
        approvals required from the Federal Trade Commission and the
        United States Department of Justice under the HSR Act (as defined
        in Section 3.2(z) below), no consent or approval by, or
        notification to or filing with, any court, governmental authority
        or third party is required in connection with the execution,
        delivery and performance of this Agreement or Sellers' Documents
        by Sellers or by the Shareholders.

                  (b)  Organization and Qualification of LLI.  LLI is a
        corporation duly organized, validly existing and in good standing
        under the laws of the Commonwealth of Pennsylvania and has all
        requisite corporate and other power and authority to own, operate
        and lease its properties and to carry on its business as it is
        now being conducted.  LLI is duly qualified as a foreign
        corporation to do business, and is in good standing, in each
        jurisdiction in which the character of the properties owned,
        operated or leased by it or the nature of its activities is such
        that such qualification or good standing is required by
        applicable law.  All such jurisdictions are listed on the
        Disclosure Schedule.  

                                        8
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                  (c)  Organization of Clewmark.  Clewmark is a general
        partnership duly organized, validly existing and in good standing
        under the laws of the Commonwealth of Pennsylvania and has all
        requisite power and authority to own, operate and lease its
        properties and to carry on its business as it is now being
        conducted.  

                  (d)  Owned Real Estate.  The Disclosure Schedule sets
        forth true and correct and complete legal descriptions of all
        parcels of real estate owned by Sellers, all of which are owned
        in fee simple, free and clear of any assessment, claim, lease,
        mortgage, security interest, conditional sale agreement or other
        title retention agreement, restriction (including any zoning or
        use or building restriction), easement or lien or encumbrance of
        any kind or nature whatsoever, and free and clear of any pending,
        proposed or threatened zoning or use or building change, except
        as set forth on the Disclosure Schedule, which claim, lease,
        mortgage, security interest, conditional sale agreement or other
        title retention agreement, restriction, easement or lien or
        encumbrance, or pending, proposed or threatened zoning or use or
        building change, does not now, either singly or in the aggregate,
        interfere in any material way with the present or any intended
        use of any such real estate, or substantially decrease its value.

                  (e)  Leased Real Estate.  The Disclosure Schedule sets
        forth true, correct and complete copies of all real estate leases
        pursuant to which Sellers lease real estate.  Sellers now enjoy
        quiet and undisturbed possession under each of said leases.  Such
        leased real estate is free and clear of any zoning or use or
        building restriction or any pending, proposed or threatened
        zoning or use or building restriction which would now, either
        singly or in the aggregate, interfere in any material way with
        the present or any intended use of any of such leased real
        estate.  Said leases now are, and on the Closing Date will be,
        valid and binding and in full force and effect, and are not now,
        and on the Closing Date will not be, in default as to the payment
        of rent or otherwise.  All real estate leases between Clewmark,
        as lessor, and LLI, as lessee, shall be terminated by Sellers
        effective as of the Closing.

                  (f)  Books and Records.  The books and records of
        Sellers, including without limitation the books of account, are
        complete and correct and accurately reflect the conduct of the
        business and affairs of Sellers.

                  (g)  Subsidiaries.  Except for Sellers' ninety percent
        (90%) ownership of Mountain States Analytical Inc., Sellers (i)
        have no subsidiaries and (ii) are not a partner or joint venturer
        with any other person.  Sellers are not subject to any
        obligation, contingent or otherwise, to provide funds to or make
        an investment (in the form of a loan, capital contribution or
        otherwise) in any entity.   


                                        9
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<PAGE>





                  (h)  Financial Statements.  Sellers have delivered to
        Buyer prior to the execution of this Agreement true and complete
        copies of:  (i) the audited combined balance sheet of Sellers as
        of September 30, 1994 and audited combined statements of
        operations, stockholders'/partners' equity and cash flows for the
        year ended September 30, 1994, accompanied by the report thereon
        by Trout, Ebersole & Groff, Certified Public Accountants, and
        (ii) the unaudited combined balance sheet of Sellers as of March
        31, 1995 and the unaudited combined statements of operations and
        cash flows for the six (6) months ended March 31, 1995 (all of
        the financial statements referred to in this Section 3.2(h) are
        collectively referred to in this Agreement as the "Financial
        Statements").  The Financial Statements fairly present the
        financial condition, results of operations and cash flows of
        Sellers as of the dates and for the periods indicated, in each
        case in accordance with generally accepted accounting principles
        applied on a basis consistent with previous years.

                  (i)  No Undisclosed Liabilities; No Dealings with
        Shareholders, Officers, Directors or Employees.  As of the
        Closing Date, Sellers have no liabilities or obligations of any
        nature, other than those reflected on the Closing Balance Sheet,
        nor in any amounts in excess of those included for such
        liabilities on the Closing Balance Sheet.  As used in this
        Agreement, the term "liability" includes those liabilities which
        are known or unknown, absolute, accrued, contingent or otherwise,
        and whether due or to become due.  Sellers do not have any
        contractual arrangement with, or commitment to or from, any of
        Sellers' officers, management, directors, shareholders, partners,
        employees or family members of any of the foregoing (other than
        such as may have been entered into in the normal course of
        employment), including, without limiting the generality of the
        foregoing, any contractual arrangement or commitment whereby any
        of such persons are directly or indirectly a joint investor or
        coventurer with respect to, or owner, lessor, lessee, licensor or
        licensee of, any real or personal property, tangible or
        intangible, owned or used by, or a lender to or debtor of,
        Sellers. 

                  (j)  Taxes.  Sellers have accurately prepared and duly
        and timely filed all federal, state, local or foreign tax and
        other returns and reports which were required to be filed, in
        respect of all income, franchise, capital stock, excise, sales,
        use, property (real and personal), payroll and other taxes,
        levies, imports, duties, license and registration fees, charges
        or withholdings of any nature whatsoever and penalties or
        interest associated therewith (collectively, "Taxes").  Sellers
        have delivered to Buyer true and complete copies of the income,
        franchise, capital stock, excise, sales, use, property and
        employment tax returns filed by Sellers with any federal, state,
        local or foreign governmental authority since January 1, 1990.
        None of the federal, state, local or foreign Tax returns of
        Sellers have been or are being audited or examined by the
        governmental department or agency having jurisdiction, nor has

                                       10
PAGE
<PAGE>





        any deficiency for any Tax been asserted against Sellers.  No
        waivers of any statutes of limitation are in effect in respect of
        any Taxes.  Sellers have never filed a consolidated income tax
        return with another company.  There are no claims pending or
        threatened, against Sellers for past due Taxes, nor is there any
        basis for any such claim.  Sellers will not have any liability
        for Taxes for or in respect of any period or periods up to and
        including the Closing Date except for liabilities for property,
        payroll and similar taxes accrued for on the Closing Balance
        Sheet.  Without limiting the generality of the foregoing, Sellers
        have withheld or collected from each payment made to each of
        their employees, consultants or other payees the amount of all
        Taxes required to be withheld or collected therefrom, and, to the
        extent required by law, have paid the same to the proper tax
        receiving officers or authorized depositories.

                  (k)  Properties; Environmental and Health and Safety
        Matters.  Sellers have good, full and marketable title to, or a
        valid and continuing leasehold interest in, all properties and
        assets, real and personal, reflected on the Closing Balance
        Sheet, free and clear of all mortgages, liens, attachments,
        pledges, encumbrances or security interests of any nature
        whatsoever.  All leases pursuant to which Sellers lease real or
        personal property are in good standing, and are valid and in full
        force and effect in accordance with their respective terms. There
        are no defaults under any such leases attributable to Sellers,
        and no event has occurred that (whether or not with notice, lapse
        of time or both) would constitute a default.  All buildings,
        improvements, machinery, equipment, vehicles and items of
        tangible personal property used in connection with the operations
        of Sellers are being transferred to Buyer "as is," "where is."

                       The Disclosure Schedule accurately sets forth or
        describes:

                       (i)  (A)  any and all landfills, surface
                  impoundments, pits, ponds, lagoons, underground
                  injection wells, waste piles, land treatment units,
                  sites, incinerators and any other units used by Sellers
                  for the handling, treatment, recycling, reuse, return,
                  storage and disposal (hereinafter "Management") of
                  Hazardous Materials, wastes or test sample remainder,
                  recyclable materials; and 

                            (B)  all underground, in-ground or on-ground
                  storage tanks on property which has been or is
                  currently owned or leased by Sellers (including their
                  predecessors in interest);

                       (ii)  for all units identified in clause (i)(A)
             for the five (5) year period immediately preceding the
             Closing Date, information on the time period used, type of
             Hazardous Materials, waste, test sample remainder, or
             recyclable material, method of Management, and whether there

                                       11
PAGE
<PAGE>





             has been a release of Hazardous Materials, pollutants or
             contaminants from such units onto the ground or subsurface
             or into the air, groundwater or surface waters;

                      (iii)  for all tanks identified in clause (i)(B)
             for the five (5) year period immediately preceding the
             Closing Date, information on the time period used, material
             being stored, and when and what tests, if any, have been
             conducted regarding tank integrity and test results, and
             whether there are releases of material from such units onto
             the ground or subsurface or into the air, groundwater or
             surface waters;

                       (iv)  any evidence, including sample results, of
             air, soil, surface water, or groundwater contamination on or
             migrating from property which has been or is currently owned
             or leased by Sellers which is not addressed by clauses (ii)
             or (iii);

                       (v)  a list of all sites to which Hazardous
             Materials, wastes, test sample remainder or recyclable
             materials have been sent by Sellers for Management, the
             owner or operator of such off-site facilities, the
             transporter of such Hazardous Materials, wastes, test sample
             remainders or recyclable materials, type of Hazardous
             Materials, wastes, test sample remainders or recyclable
             materials, method of Management used, and time period of
             use;

                       (vi)  reports of releases or threatened releases
             (including, but not limited to, continuous release reports)
             of Hazardous Materials, occurring on or from facilities of
             Sellers or disposal sites used by Sellers and reported to:

                            (A)  the National Response Center, State
                  Emergency Response Commissions, Local Emergency
                  Planning Committees, the Pennsylvania Department of
                  Environmental Resources ("DER"), or the United States
                  Environmental Protection Agency (the "EPA") pursuant to
                  requirements of the Comprehensive Environmental
                  Response, Compensation and Liability Act of 1980, as
                  amended by the Superfund Amendments and Reauthorization
                  Act of 1986 ("CERCLA"), the Resource Conservation and
                  Recovery Act ("RCRA"), the Clean Water Act ("CWA") or
                  other statutes; or 

                            (B)  any other foreign, state or local
                  governmental authority;

                       (vii)  noncompliance by Sellers since January 1,
             1990 with conditions of environmental permits or licenses
             issued pursuant to, or other requirements of, the Clean Air
             Act, CWA, RCRA, the Toxic Substances Control Act ("TSCA"),
             the Safe Drinking Water Act, CERCLA, Atomic Energy Act,

                                       12
PAGE
<PAGE>





             Nuclear Regulatory Act or similar foreign, state or local
             statutes, laws, ordinances, rules or regulations;

                     (viii)  Hazardous Waste Manifest Discrepancy
             Reports, RCRA biennial reports or similar state reports,
             SARA Title III and Form R reports, Discharge Monitoring
             Reports, air emission monitoring reports and air emission
             inventories, filed by Sellers with any government agency
             since January 1, 1990;

                       (ix)  Reports of environmental testing and audits
             conducted since January 1, 1990 of facilities owned or
             leased by Sellers, and action plans and progress reports
             responding to test and audit findings.  Such audits include
             audits conducted by Sellers, their consultants, insurance
             companies or governmental agencies;

                       (x)  Claims, litigation and other legal
             proceedings (including but not limited to notices of
             violation, notices of noncompliance, citations, orders,
             investigation reports, consent orders, consent decrees and
             administrative or judicial enforcement proceedings) seeking
             or alleging money damages (resulting from injury to person
             or property), injunctive relief, remedial action, fines,
             penalties or any other remedy by reason of:

                            (A)  violation of or noncompliance with any
                  law, regulation, rule, common law doctrine or
                  requirement of law or regulation relating to pollution
                  or protection of the environment or public health
                  ("Environmental Laws"), or any permit, license or
                  registration issued thereunder; or 

                            (B)  the disposal, discharge or release of
                  Hazardous Materials whether or not in compliance with
                  Environmental Laws; or 

                            (C)  the ownership, operation or use of any
                  landfill, surface impoundment, pit, pond, lagoon,
                  underground injection well, waste pile, land treatment
                  unit, wastewater treatment plant, air pollution control
                  equipment, or any other unit used for Management of
                  Hazardous Material, or recyclable material; or 

                            (D)  exposure to any Hazardous Materials,
                  chemical substances, radioactive material, noises,
                  odors, or vibration at or emanating from property which
                  has been or is currently owned or leased by Sellers;
                  including, in all cases, all legal proceedings which
                  have been concluded (e.g., a judgment or consent decree
                  has been entered) but pursuant to which work is ongoing
                  (e.g., a decree requiring remedial activity to be
                  undertaken);


                                       13
PAGE
<PAGE>





                       (xi)  All permits and licenses and pending
             applications for permits and licenses for facilities which
             are currently owned or leased by Sellers, including, but not
             limited to notifications to governmental agencies required
             by Sections 3010(a) (notice of hazardous waste activity) and
             9002 (underground storage tanks) of RCRA and by comparable
             state laws, and notices and reports required pursuant to
             Sections 302, 311, 312 and 313 of Title III of the Superfund
             Amendments and Reauthorization Act of 1986 and comparable
             state laws;

                      (xii)  All current and expired or terminated
             contracts involving the off-site transportation or
             Management of Hazardous Materials, wastes, test sample
             remainders or recyclable materials generated by Sellers;

                     (xiii)  For the three (3) year period immediately
             preceding the Closing Date, all reports or assessments,
             surveys or analyses addressing the operational safety of
             facilities and/or activities (e.g., transportation) of
             Sellers and/or hazards and risks (including risk of episodic
             releases and impact of routine, continuous releases)
             associated therewith, including but not limited to process
             risk surveys, operational safety surveys, air emissions
             modeling, and risk assessments, and action plans and
             progress reports responding to any such reports;

                      (xiv)  A description of the manner in which
             asbestos and/or PCB was or is used or otherwise present at
             any facility which has been or is currently owned or leased
             by Sellers; and

                       (xv)  A list of all governmental inspections
             relating to the environment of Sellers' facilities and any
             reports or studies generated therewith.

                       Sellers are not and have not been in violation of
             any law, regulation or ordinance (including without
             limitation, laws, regulations or ordinances relating to
             building, health code, zoning, environmental, land use or
             similar matters) relating to their properties or facilities.
             The real property occupied or used by Sellers at any time is
             not and has not been polluted or contaminated, nor has it
             ever been the subject of environmental clean-up or
             remediation.  Such properties do not contain any Hazardous
             Material, nor has any Hazardous Material been discharged or
             spilled thereon.  Sellers have never owned or operated a
             petroleum or hazardous waste landfill or any petroleum or
             other hazardous waste treatment, storage or disposal
             facility.  There are no past or present events, conditions,
             circumstances, activities, practices, incidents, actions or
             plans of Sellers or their predecessors, either collectively,
             individually or severally, which may interfere with or
             prevent continued compliance, or which may give rise to any

                                       14
PAGE
<PAGE>





             common law or legal liability, or otherwise form the basis
             of any claim, action, suit, proceeding, hearing, or
             investigation, based on or related to the disposal, storage,
             handling, manufacture, processing, distribution, use,
             treatment, or transport, or the emission, discharge, release
             or threatened release into the environment, of any
             substance, Hazardous Material, pollutant, contaminant, or
             waste, whether or not by Sellers or affecting their
             properties.  There are no proceedings affecting any of such
             properties pending or, to the best of Sellers' knowledge
             threatened, which could have an adverse effect on the
             present or future use of any such property for the purposes
             for which it was acquired or the purpose for which it is
             used.  Sellers have not received any notice from any
             governmental agency or other party seeking any information
             or alleging any liability with regard to the real property
             occupied or used by Sellers now or at any time or with
             regard to any off-site environmental conditions.

                       For purposes of this Agreement, "Hazardous
             Material" means any flammable, explosive or radioactive
             material, petroleum or any fraction thereof, or any
             hazardous or toxic waste, substance or material, including
             substances defined as "hazardous substances", "hazardous
             materials", "pollutant", "contaminant", "solid waste" or
             "toxic substances" under any applicable laws relating to
             protection of the public health, welfare or natural
             resources, including, without limitation, laws regulating
             hazardous or toxic materials and substances, air pollution
             (including noise and odors), water pollution, liquid and
             solid waste, pesticides, drinking water, community and
             employee health, environmental land use management,
             stormwater, sediment control, nuisances, radiation,
             wetlands, endangered species, environmental permitting and
             petroleum products, and all rules and regulations
             promulgated pursuant to such applicable laws.

                  (l)  Accounts and Notes Receivable.  All accounts and
        notes receivable shown on the Closing Balance Sheet have arisen
        in the ordinary course of business, are in the process of
        collection and are collectible in the ordinary course of
        business.

                  (m)  Governmental Authorizations.  Set forth on the
        Disclosure Schedule is a complete and accurate list of all
        governmental permits, licenses, franchises, concessions, security
        clearances, zoning variances and other approvals, authorizations
        and orders which have been obtained in connection with the
        conduct of the business now being conducted by LLI.  Such
        permits, licenses, franchises, concessions, zoning variances,
        approvals, authorizations and orders constitute all governmental
        permits, licenses, franchises, concessions, zoning variances,
        approvals, authorizations and orders which are required under all
        applicable local, provincial, national or foreign laws and

                                       15
PAGE
<PAGE>





        regulations for the operation of the business being conducted by
        LLI as it has been heretofore conducted.  All such permits,
        licenses, franchises, concessions, zoning variances, approvals,
        authorizations and orders are presently in full force and effect,
        Sellers are in compliance with the requirements thereof (except
        for minor violations that could not result in a suspension or
        forfeiture thereof), no suspension or cancellation of any of them
        is threatened to the knowledge of Sellers or of the Shareholders,
        and the execution of this Agreement and of Sellers' Documents and
        the consummation of the transactions contemplated herein and
        therein will not adversely affect the validity or effectiveness
        of, and will not require, for retention thereof after such change
        of ownership, the consent or approval of any party to, or any
        other person or governmental agency having jurisdiction of, any
        such permit, license, franchise, concession, zoning variance,
        approval, authorization or order.  Neither Sellers nor the
        Shareholders have any knowledge of any fact or circumstance which
        would prevent, limit or restrict LLI from continuing to operate
        its business in the present manner, and no new material
        requirements pertaining to the manner of operating its specific
        business (not businesses in general) have been issued or
        announced by any governmental authority during the past year, nor
        are there any disputes pending between Sellers and any
        governmental authority about LLI's operations as presently being
        conducted.  Sellers have furnished or made available to Buyer all
        reports and applications filed by Sellers with any governmental
        agency in the last five (5) years.

                  (n)  Patents and Trademarks.  Sellers solely own or
        have the exclusive right to use, free and clear of any obligation
        of payment, encumbrance, lien or claim, all patents, trademarks,
        trade names, service marks, brand names and copyrights, and
        registrations and applications therefor, used in the conduct of
        LLI's business or the use of which is necessary for LLI's
        business as now being conducted (the "Intangibles").  Set forth
        on the Disclosure Schedule is an accurate list and description of
        all Intangibles and licenses, sublicenses or other rights or
        obligations entered into or granted by or to Sellers with respect
        thereto.  Sellers own or possess adequate rights to use, free and
        clear of any obligation of payment, encumbrance, lien or claim,
        all other inventions, technology, technical know-how, processes,
        designs, trade secrets, vendor and customer lists and other
        confidential information required for or used in LLI's business.
        No person has made any claim or demand upon Sellers pertaining
        to, and no proceeding is pending or, so far as is known to
        Sellers or the Shareholders threatened, which challenges (i) the
        rights of Sellers in respect of any Intangibles or (ii) the
        rights of Sellers to any other inventions, technology, technical
        know-how, processes, designs, trade secrets or intellectual
        property or confidential information used in the conduct of its
        business.  No Intangible owned or used by Sellers are subject to
        any order, ruling, decree, judgment or stipulation by or with any
        court, arbitrator or administrative agency.  Sellers have not
        infringed, or engaged in the unauthorized use of, any patent,

                                       16
PAGE
<PAGE>





        trademark, trade name, service mark, brand name or copyright, or
        any invention, technology, technical know-how, process, design,
        trade secret or other intellectual property of another.  Neither
        Sellers nor the Shareholders are aware of any infringement or
        unauthorized use by a third party of any patent, trademark, trade
        name, service mark, brand name or copyright, or any invention,
        technology, technical know-how, process, design, trade secret or
        other intellectual property owned or used by Sellers.  

                  (o)  Insurance.  Sellers are not in default with
        respect to any provisions of any policy of general liability,
        fire, title or other form of insurance held by them, are current
        in the payment of all premiums due or have reserved for such
        premiums due on such insurance, and have not failed to give any
        notice or present any claim thereunder in due and timely fashion,
        except for claims that are immaterial in both the nature of the
        claim and in the amount of such claim.  Sellers maintain
        insurance on all of their assets and business from insurers which
        are financially sound and reputable, in amounts and coverages and
        against the kinds of risks and losses reasonably prudent to be
        insured against by corporations engaged in the same or similar
        businesses.  All policies of insurance held by Sellers are listed
        on the Disclosure Schedule.  No basis exists which would
        jeopardize the coverage under any such insurance.  

                  (p)  Employee Benefit Plans.  For the purposes of this
        Section 3.2(p), the following definitions shall apply:

                       (i)  Accumulated Funding Deficiency:  An
             "accumulated funding deficiency" as defined in ERISA Section
             302(a)(2) or the last two sentences of Section 412(a) of the
             Code, or, in either case, successor provisions to such
             provisions adopted by amendments to ERISA or the Code, as
             the case may be, and including, in each case, other
             provisions of ERISA, of the Code or of other law, and
             regulations adopted under ERISA or the Code or such other
             law, modifying, amending, interpreting or otherwise
             affecting the application of such provisions, either in
             general or as applied to the nature or circumstances of a
             particular entity that is a party to, or is affected by or
             is involved in the transactions contemplated by this
             Agreement and with respect to which entity the use of the
             term in this Agreement, or in the particular location in
             this Agreement, is relevant.

                       (ii)  Complete Withdrawal:  A "complete
             withdrawal" from a Multiemployer Plan as defined in Section
             4203 of ERISA or successor provisions to such provision
             adopted by amendments to ERISA and including other
             provisions of ERISA or of other law, and regulations adopted
             under ERISA or such other law, modifying, amending,
             interpreting or otherwise affecting the application of such
             provision, either in general or as applied to the nature or
             circumstances of a particular entity that is a party to, or

                                       17
PAGE
<PAGE>





             is affected by or is involved in the transactions
             contemplated by this Agreement and with respect to which
             entity the use of the term in this Agreement, or in the
             particular location in this Agreement, is relevant.

                       (iii)  ERISA:  The Employee Retirement Income
             Security Act of 1974, as amended and in effect at the time
             of execution of this Agreement.

                       (iv)  LLI's ERISA Affiliate:  LLI's ERISA
             Affiliate shall mean any member of any controlled group of
             corporations, group of trades or businesses under common
             control, or affiliated service group (as defined for
             purposes of Section 414(b), (c) and (m), respectively, of
             the Code) which includes LLI.

                       (v)  Multiemployer Plan:  A "multiemployer plan"
             as defined in ERISA Section 3(37) or Section 414(f) of the
             Code, or, in either case, successor provisions to such
             provisions adopted by amendments to ERISA or the Code, as
             the case may be, and including, in each case, other
             provisions of ERISA, of the Code or of other law, and
             regulations adopted under ERISA or the Code or such other
             law, modifying, amending, interpreting or otherwise
             affecting the application of such provisions, either in
             general or as applied to the nature or circumstances of a
             particular entity that is a party to, or is affected by or
             is involved in the transaction contemplated by this
             Agreement and with respect to which entity the use of the
             term in this Agreement, or in the particular location in
             this Agreement, is relevant.

                       (vi)  Partial Withdrawal:  A "partial withdrawal"
             from a Multiemployer Plan as defined in Section 4205 of
             ERISA or successor provisions to such provision adopted by
             amendments to ERISA and including other provisions of ERISA
             or of other law, and regulations adopted under ERISA or such
             other law, modifying, amending, interpreting or otherwise
             affecting the application of such provision, either in
             general or as applied to the nature or circumstances of a
             particular entity that is a party to, or is affected by or
             is involved in the transactions contemplated by this
             Agreement and with respect to which entity the use of the
             term in this Agreement, or in the particular location in
             this Agreement, is relevant.

                       (vii)  Plan Termination:  A termination of a
             Pension Plan, whether partial or complete, within the
             meaning of Title IV of ERISA.

                       (viii)  PBGC:  The Pension Benefit Guaranty
             Corporation.



                                       18
PAGE
<PAGE>





                       (ix)  Pension Plan:  A "pension plan" or "employee
             pension benefit plan" as defined in Section 3(2) of ERISA or
             successor provisions to such provision adopted by amendments
             to ERISA and including other provisions of ERISA or of other
             law, and regulations adopted under ERISA or such other law,
             modifying, amending, interpreting or otherwise affecting the
             application of such provision, either in general or as
             applied to the nature or circumstances of a particular
             entity that is a party to, or is affected by or is involved
             in the transactions contemplated by this Agreement and with
             respect to which entity the use of the term in this
             Agreement, or in the particular location in this Agreement,
             is relevant.

                       (x)  Prohibited Transaction:  A "prohibited
             transaction" as defined in ERISA Section 406 or Section
             4975(c) of the Code, or in either case, successor provisions
             to such provisions adopted by amendments to ERISA or the
             Code, as the case may be, and including, in each case, other
             provisions of ERISA, of the Code or of other law, and
             regulations adopted under ERISA or the Code or such other
             law, modifying, amending, interpreting or otherwise
             affecting the application of such provisions, either in
             general or as applied to the nature or circumstances of a
             particular entity that is a party to, or is affected by or
             is involved in the transactions contemplated by this
             Agreement and with respect to which entity the use of the
             term in this Agreement, or in the particular location in
             this Agreement, is relevant.

                       (xi)  Reportable Event:  A "reportable event" as
             defined in Section 4043(b) of ERISA or successor provisions
             to such provisions adopted by amendments to ERISA and
             including other provisions of ERISA or of other law, and
             regulations adopted under ERISA or such other law,
             modifying, amending, interpreting or otherwise affecting the
             application of such provision either in general or as
             applied to the nature or circumstances of a particular
             entity that is a party to, or is affected by or is involved
             in the transactions contemplated by this Agreement and with
             respect to which entity the use of the term in this
             Agreement, or in the particular location in this Agreement,
             is relevant.

                       (xii)  Welfare Plan:  A "welfare plan" or an
             "employee welfare benefit plan" as defined in Section 3(1)
             of ERISA or successor provisions to such provision adopted
             by amendments to ERISA and including other provisions of
             ERISA or of other law, and regulations adopted under ERISA
             or such other law, modifying, amending, interpreting or
             otherwise affecting the application of such provision,
             either in general or as applied to the nature or
             circumstances of a particular entity that is a party to, or
             is affected by or is involved in the transactions

                                       19
PAGE
<PAGE>





             contemplated by this Agreement and with respect to which
             entity the use of the term in this Agreement, or in the
             particular location in this Agreement, is relevant.

             Except as disclosed in the Disclosure Schedule:

             Sellers do not maintain or contribute to any Pension Plan or
        any Welfare Plan, nor have Sellers or any of LLI's ERISA
        Affiliates ever had, an obligation to contribute to any
        Multiemployer Plan.  All Pension Plans and Welfare Plans of
        Sellers have been administered in compliance with their terms,
        ERISA and, where applicable, the Code.  Sellers have received
        from the Internal Revenue Service a favorable determination
        letter with respect to the qualification of each such Pension
        Plan which is intended to qualify under Section 401(a) of the
        Code and the exemption of any corresponding trust.  A copy of
        each such determination letter has been furnished to Buyer.  With
        respect to each Pension Plan:  (1) there is no fact, including,
        without limitation, any Reportable Event, that exists that would
        constitute grounds for termination of such Plan by the PBGC or
        for the appointment by the appropriate United States District
        Court of a trustee to administer such plan, in each case as
        contemplated by ERISA; (2) neither Sellers nor any fiduciary,
        trustee or administrator of any Pension Plan or Welfare Plan have
        engaged in any Prohibited Transaction that could subject Sellers
        to any tax or any penalty imposed by ERISA or the Code; (3)
        Sellers have no liability to the PBGC (other than for payment of
        premiums); and (4) there is no Accumulated Funding Deficiency
        with respect to any Pension Plan maintained by Sellers or any of
        LLI's ERISA Affiliates, whether or not waived.

             Sellers or any of LLI's ERISA Affiliates, or any "party
        interest" or "disqualified person" (as such term are defined in
        Section 3 of ERISA and Section 4975 of the Code), with respect to
        any Pension Plan or Welfare Plan, have not taken any action
        including the making of any investment, or failed to take any
        action, that could subject any of them or any other person to any
        liability for any tax or for breach of fiduciary duty with
        respect to or in connection with any Pension Plan or Welfare
        Plan.  No Pension Plan or Welfare Plan, administrator or
        fiduciary of any Pension Plan or Welfare Plan, or Sellers have
        any liability under any provision of any applicable law by reason
        of any communication or failure to communicate with respect to or
        in connection with any Pension Plan or Welfare Plan, or any
        filing or failure to file with any governmental entity.  No
        Pension Plan or Welfare Plan, administrator or fiduciary of any
        Pension Plan or Welfare Plan, or Sellers or any of LLI's ERISA
        Affiliates have any liability to any plan participant,
        beneficiary or other person under any provision of any applicable
        law by reason of any payment of benefits or other amounts or
        failure to pay benefits or any other amounts, or by reason of any
        credit or failure to give credit for any benefits or rights (such
        as, but not limited to, vesting rights) with respect to benefits
        under or in connection with any Pension Plan or Welfare Plan,

                                       20
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        other than benefit claims in the normal administration of each
        Pension Plan or Welfare Plan.  Sellers are not delinquent or in
        arrears on any amounts owed to, or with respect to any
        contributions under, any Pension Plan or Welfare Plan.  No person
        is a participant in or eligible for participation (without regard
        to age or service) in, any Pension Plan or Welfare Plan who is
        not a present or former employee of Sellers or a beneficiary of
        such Pension Plan or Welfare Plan.  None of the Pension Plans or
        Welfare Plans provides for continuing accrual of benefits or
        coverage for any participant or the beneficiary of any
        participant after such participant's termination of employment
        with Sellers.

             There are no unfunded obligations under any Pension Plan or
        Welfare Plan providing benefits after termination of employment
        to any employee of Sellers (or beneficiary thereof), including
        without limitation retiree health coverage and deferred
        compensation.  There has been no Plan Termination that has
        occurred during the five-year period ending on the date hereof.
        Sellers have incurred no liability under Title IV of ERISA with
        respect to any Pension Plan maintained by a trade or business
        (whether or not incorporated) which is under common control, with
        or part of a controlled group of corporations with, Sellers,
        within the meaning of Sections 414(b) or (c) of the Code.  No
        event has occurred and no condition exists with respect to any
        Pension Plan or Welfare Plan that would subject Sellers to any
        tax under Section 4972, 4977, 4979 or 4980B of the Code or to a
        fine under ERISA Section 502(c) with respect to any such plan.
        No Welfare Plan is funded with a trust or other funding vehicle,
        other than insurance policies.  No plan documentation or
        agreement, summary plan description or other written
        communication distributed to employees with respect to any
        Welfare Plan or Pension Plan prohibits Sellers from amending or
        terminating any such plan.  There has occurred no Complete
        Withdrawal or Partial Withdrawal with respect to any
        Multiemployer Plan that could cause Sellers to incur any
        liability under or as a result of ERISA other than to the extent
        previously paid or fully provided for in the Closing Balance
        Sheet, and all payments required to be made to any such Plan by
        Sellers under any applicable collective bargaining agreements
        have been made.  As of the date of the Closing Balance Sheet,
        Sellers had no liability in connection with any Pension Plan,
        Welfare Plan or other employee benefit plan which was not fully
        provided for on the Closing Balance Sheet.  There are no actions,
        arbitration's or claims pending or threatened with respect to any
        Pension Plan, Welfare Plan or other employee benefit plans or any
        fiduciary or sponsor thereof.

                  (q)  Descriptions and Lists.  Set forth on the
        Disclosure Schedule is an accurate and complete list of the
        following oral or written contracts, agreements, leases and other
        documents presently in effect to which Sellers are a party or by
        which they or their properties or assets are bound:


                                       21
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<PAGE>





                       (i)  a list of all interests in real property
             owned or leased by Sellers;

                       (ii)  a list of:

                            (A)  all customers of LLI who, in the 1994
                  calendar year, purchased Ten Thousand Dollars ($10,000)
                  or more of services from LLI; 

                            (B)  all distributorship, sales, agency,
                  franchise or license agreements of Sellers; 

                            (C)  each agreement containing any covenant
                  restricting the freedom of Sellers to compete in any
                  line of business or area or with any person; 

                            (D)  each agreement obligating, absolutely or
                  on a contingent basis, Sellers to make payments to a
                  third party based on future sales, revenues or earnings
                  of Sellers from a product or service; and 

                            (E)  each agreement of Sellers not made in
                  the ordinary course of business which is not otherwise
                  disclosed pursuant to another section of the Disclosure
                  Schedule;

                      (iii)  a list of:

                            (A)  the names and salaries, bonuses,
                  vacation and other allowances, and other employment
                  conditions, of all present officers and employees of
                  Sellers, including the last date of any increase in
                  such persons' compensation; 

                            (B)  any persons on leave of absence or who
                  are currently collecting disability payments; and 

                            (C)  all employment, consulting or similar
                  compensation agreements of Sellers which may not be
                  terminated by Sellers without penalty within thirty
                  days after the Closing;

                       (iv)  a list of all bonus, incentive compensation,
             deferred compensation, profit-sharing, stock option,
             retirement, pension, severance, indemnification, insurance,
             death benefit or other fringe benefit plans, agreements or
             arrangements of Sellers (or applying to Sellers) in effect,
             or under which any amounts remain unpaid, on the date hereof
             or to become effective after the date hereof, the methods of
             computing Sellers' obligations thereunder, and a description
             of any funding vehicles therefor;

                       (v)  a list of all labor unions or other
             organizations representing, purporting to represent or

                                       22
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<PAGE>





             attempting to represent any employees of Sellers, and a list
             of all collective bargaining agreements of Sellers with any
             labor unions or other representatives or employees,
             including agreements, amendments, supplements, letters and
             memoranda of understanding of all kinds with the local unit
             of each such union or other organization;

                       (vi)  a list of each agreement or other instrument
             or arrangement defining the terms on which any indebtedness
             of Sellers are or may be issued;

                      (vii)  a list of each outstanding commitment by
             Sellers to make a capital expenditure, capital addition or
             capital improvement involving an amount in excess of Ten
             Thousand Dollars ($10,000);

                     (viii)  a list of:

                            (A)  aged accounts receivable from a person,
                  entity or group of affiliated persons or entities from
                  whom the aggregate of such receivables exceeded One
                  Thousand Dollars ($1,000); 

                            (B)  any prepaid expense in excess of Ten
                  Thousand Dollars ($10,000);

                            (C)  all items of machinery, equipment or
                  other tangible personal property with a depreciated
                  book value in excess of One Thousand Dollars ($1,000);
                  and

                            (D)  all automobiles and trucks. 

                       (ix)  the name and location of every bank in which
             Sellers have an account, safe deposit box or line of credit,
             the identifying number of all such accounts and safe deposit
             boxes, and the names of all persons having power to borrow,
             discount debt obligations, cash or draw checks or otherwise
             act on behalf of Sellers in any dealings with such banks; 

                       (x)  a list of each credit customer which ordered
             services from Sellers during the year ended September 30,
             1994 and during the six months ended March 31, 1995;

                      (xi)  all industrial hygiene surveys and personnel
             safety statistics prepared since January 1, 1990;

                     (xii)  summaries of all epidemiological or
             toxicological studies, conducted by or on behalf of, or in
             the possession of Sellers;

                     (xiii)  all occupational safety and health reports
             filed with governmental agencies or instrumentalities since
             January 1, 1990;

                                       23
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<PAGE>






                      (xiv)  annual summaries of workers compensation
             liabilities since January 1, 1990;

                      (xv)  all citations, notices of violations, orders,
             consent orders, administrative or judicial enforcement
             proceedings from governmental agencies or instrumentalities
             with respect to health or safety matters issued or pending
             since January 1, 1990;

                     (xvi)  each inspection by any governmental agency or
             instrumentality concerning health, safety or environmental
             matters;

                    (xvii)  all submissions to health, safety and product
             safety regulatory agencies since January 1, 1990;

                    (xviii)  all medical surveillance programs provided
             for employees;

                     (xix)  a list of each accident or event which has
             resulted in, or to Sellers' best knowledge, may result in a
             claim against Sellers that personal injury, property damage
             or economic loss was caused by Sellers or involved any
             employee in his capacity as an employee, or any property of,
             or service sold by, Sellers; and 

                     (xx)  a list of all claims pending under the
             insurance policies listed pursuant to Section 3.2(o)
             (including, in their aggregate amount, employee benefit
             claims other than health or dental insurance claims).

                  Sellers have furnished to Buyer a true, correct and
        complete copy of each document that is referred to or otherwise
        related to any item referred to in this Section 3.2(q) or
        otherwise in this Agreement.

                  (r)  Validity.  There is no default or claimed or
        purported or alleged default on the part of Sellers, or basis on
        which, with notice or lapse of time or both (including notice of
        this Agreement), a default would exist, in any obligation on the
        part of Sellers to be performed under any lease, contract, plan,
        policy or other instrument or arrangement referred to in Section
        3.2(q) or otherwise in this Agreement.

                  (s)  No Changes.  Since September 30, 1994 there has
        not been:

                       (i)  any material adverse change in the financial
             condition, assets, liabilities, earnings, business or
             prospects of Sellers; 

                       (ii)  any damage, destruction or loss (whether or
             not covered by insurance) to property materially adversely

                                       24
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<PAGE>





             affecting the condition (financial or otherwise), assets,
             liabilities, earnings or business of Sellers;

                      (iii)  any declaration, setting aside or payment of
             any dividend, or other distribution by Sellers, except
             distributions to enable the shareholders of LLI and the
             partners of Clewmark to discharge their individual tax
             obligations arising from the flow-through treatment of
             Sellers' income to its respective owners, or any direct or
             indirect redemption, purchase or other acquisition of an
             equity interest in Sellers;

                       (iv)  any issuance or sale by Sellers of any bonds
             or other securities, or any partial or complete formation,
             acquisition, disposition or liquidation of Sellers;

                       (v)  any mortgage, lien, attachment, pledge,
             encumbrance or security interest created on any asset,
             tangible or intangible, of Sellers, or assumed, either by
             Sellers or by others, with respect to any such asset, except
             for liens for taxes not yet due;

                       (vi)  any indebtedness or other liability or
             obligation (whether absolute, accrued, contingent or
             otherwise) incurred, or other transaction engaged in, by
             Sellers, except those in the ordinary course of business
             which are individually, and in the aggregate to one group of
             related parties, less than Ten Thousand Dollars ($10,000) in
             amount;

                      (vii)  any obligation or liability discharged or
             satisfied by Sellers, except items included in current
             liabilities shown on the Closing Balance Sheet which are in
             the ordinary course of business and are individually, and in
             the aggregate to one group of related parties, less than Ten
             Thousand Dollars ($10,000) in amount;

                     (viii)  any sale, assignment, lease, transfer or
             other disposition of any tangible asset of Sellers, except
             in the ordinary course of business, or any sale, assignment,
             lease, transfer or other disposition of any of their
             patents, trademarks, trade names, brand names, copyrights,
             licenses or other intangible assets;

                       (ix)  any amendment, termination or waiver of any
             material right belonging to Sellers;

                       (x)  any increase in the compensation or benefits
             payable or to become payable by Sellers to any of their
             officers or employees except for ordinary increases for
             non-management employees in accordance with prior practice;

                       (xi)  any transaction or contract with a
             shareholder of LLI, a partner of Clewmark, or a member of

                                       25
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<PAGE>





             any such owner's family, including a loan, change of
             employment conditions, change of pension rights or bonus;   

                      (xii)  any other action or event not in the
             ordinary course of business.

                  (t)  Litigation or Proceedings.  Sellers are not
        engaged in, or a party to, or threatened with, any claim or legal
        action or other proceeding before any court, any arbitrator of
        any kind or any administrative agency, or any governmental
        investigation, nor does any basis for any claim or legal action
        or other proceeding or governmental investigation exist.  There
        are no orders, rulings, decrees, judgments or stipulations to
        which Sellers are a party by or with any court, arbitrator or
        administrative agency affecting Sellers, or their business or
        properties.  

                  (u)  Compliance with Laws.  Sellers (i) have not been
        and are not in violation of any applicable building, zoning,
        occupational safety and health, pension, export control,
        environmental control or other federal, state, local or foreign
        law, ordinance, regulation, rule, order or governmental policy
        applicable to their plants, structures or equipment or the
        operation thereof, or any employment, equal opportunity or
        similar law, ordinance, regulation, rule, order or governmental
        policy, or any other law, ordinance, regulation, rule, order or
        governmental policy applicable to Sellers, or their business or
        assets; (ii) has not received any complaint from any governmental
        authority, and none is threatened, alleging that Sellers have
        violated any such law, ordinance, regulation, order or policy;
        (iii) have not received any notice from any governmental
        authority of any pending proceedings to take all or any part of
        the properties of Sellers (whether leased or owned) by
        condemnation or right of eminent domain and no such proceeding is
        threatened; and  (iv) are not a party to any agreement or
        instrument, or subject to any corporate charter, partnership
        agreement or other corporate or partnership restriction or
        judgment, order, writ, injunction, rule, regulation, code or
        ordinance, which materially and adversely affects, or might
        reasonably be expected materially and adversely to affect, the
        business, operations, prospects, properties, assets or financial
        condition of Sellers. 

                  (v)  Labor Matters.  There are no activities or
        controversies, such as labor organizing activities, election
        petitions or proceedings, labor strikes, disputes, slowdowns,
        work stoppages or unfair labor practice complaints, pending or
        threatened against Sellers or between Sellers and any of their
        employees, nor have there been any such activities or
        controversies within the three years prior to this Agreement.  No
        labor grievance has been filed and no arbitration proceeding has
        arisen out of or under collective bargaining agreements and is
        pending and no claim therefor has been asserted.


                                       26
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<PAGE>





                  (w)  Brokers and Finders.  Except for Sellers'
        obligations to Price Waterhouse L.L.P., which Sellers shall
        discharge in full at the Closing, neither Sellers nor the
        Shareholders have employed any broker, agent or finder or
        incurred any liability on behalf of Sellers for any brokerage
        fees, agents' commissions or finders' fees in connection with the
        transactions contemplated hereby.

                  (x)  Service Warranties.  A statement of the current
        standard warranty used for each of the services of LLI is set
        forth on the Disclosure Schedule.  The Disclosure Schedule also
        lists and accurately summarizes any and all other service
        warranties made by or on behalf of LLI which deviate materially
        from LLI's current standard warranties and which remain in effect
        on the date hereof, or pursuant to which LLI has any remaining
        obligations.

                  (y)  Reserved.  

                  (z)  No Termination of Relationship.  As of the date
        hereof, neither Sellers nor the Shareholders are aware that any
        relationship between Sellers and a distributor, customer,
        supplier, lender, employee or other person may be terminated or
        adversely affected as a result of the execution of this
        Agreement.

                  (aa) Backlog.  The Disclosure Schedule contains an
        accurate list of the value of all uncompleted work on samples
        received prior to the Closing Date.  Any quotations for work
        which are outstanding at that time contain terms and conditions
        that are consistent with LLI's practices over the past year.

                  (bb) Hart-Scott-Rodino Filing.  All information
        provided by Sellers in discharging all applicable requirements
        under the Hart-Scott-Rodino Antitrust Improvements Act of 1976,
        as amended (the "HSR Act"), and the rules and regulations
        promulgated thereunder, relating to making, filing with and
        furnishing information to the Federal Trade Commission and the
        United States Department of Justice in connection with the
        transactions contemplated hereby, is true, correct and complete
        in all respects.

                  (cc) Statements True and Correct; Further
        Representations and Warranties.  The statements contained herein
        or in any written documents prepared and delivered by or on
        behalf of the Shareholders or Sellers pursuant to the terms
        hereof are true, correct and complete in all respects, and such
        documents do not omit any fact required to be stated herein or
        therein or necessary to make the statements contained herein or
        therein, in the light of the circumstances under which they were
        made, not misleading.




                                       27
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<PAGE>





             Section 3.3.  Representations and Warranties of Buyer.
        Buyer represents and warrants to Sellers and the Shareholders
        that:

                  (a)  Organization and Good Standing.  Buyer is a
        corporation organized under the laws of the State of Delaware,
        and has all requisite power and authority to own, lease and
        operate its properties and to carry on its business as it is now
        being conducted.  

                  (b)  Authority.   The execution and delivery of this
        Agreement (and the other agreements, documents and certificates
        executed and delivered pursuant to this Agreement (together, the
        "Buyer Documents"), and the consummation of the transactions
        contemplated hereby and thereby, have been duly and validly
        authorized by all necessary action on the part of Buyer, and this
        Agreement and Buyer Documents constitute the valid and legally
        binding obligations of Buyer enforceable in accordance with their
        respective terms.  Neither the execution and delivery of this
        Agreement or of Buyer Documents nor the consummation of the
        transactions contemplated hereby or thereby will (i) conflict
        with or result in a violation, breach or termination of or
        default under (or would result in a violation, breach,
        termination or default with the giving of notice or passage of
        time or both) any of the terms, conditions or provisions of the
        Certificate of Incorporation or Bylaws of Buyer, or of any note,
        bond, mortgage, indenture, license, agreement or other instrument
        or obligation to which Buyer is a party, or by which Buyer or any
        of its properties or assets may be bound or affected or (ii)
        result in the violation of any order, writ, injunction, decree,
        statute, rule or regulation applicable to Buyer, or its
        properties or assets.  No consent or approval by, or notification
        to or filing with, any court, governmental authority or third
        party is required in connection with the execution, delivery and
        performance of this Agreement or Buyer Documents by Buyer or the
        consummation of the transactions contemplated hereby or thereby. 

                  (c)  Brokers and Finders.  Buyer has not employed any
        broker, agent or finder or incurred any liability for any
        brokerage fees, agents' commissions or finders' fees in
        connection with the transactions contemplated hereby.

                  (d)  Hart-Scott-Rodino Filing.  All information
        provided by Buyer in discharging all applicable requirements
        under the HSR Act, and the rules and regulations promulgated
        thereunder, relating to making, filing with and furnishing
        information to the Federal Trade Commission and the United States
        Department of Justice in connection with the transactions
        contemplated hereby, is true, correct and complete in all
        respects.

                  (e)  Financial Capacity.  Buyer has delivered to
        Sellers a true and complete copy of each report and definitive
        proxy statement filed by Buyer with the U.S. Securities and

                                       28
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<PAGE>





        Exchange Commission (the "Commission") since January 1, 1994 (as
        such documents have since the time of their filing been amended,
        "Buyer's SEC Documents") which are all the reports and proxy
        statements (other than preliminary material) that Buyer was
        required to file with the Commission since such date.  As of
        their respective dates, Buyer's SEC Documents complied in all
        material respects with the requirements of the Securities
        Exchange Act of 1934, as amended (the "Exchange Act"), and the
        rules and regulations of the Commission thereunder applicable to
        Buyer's SEC Documents and none of the Buyer's SEC Documents when
        filed contained any untrue statement of a material fact or
        omitted to state a material fact required to be stated therein or
        necessary to make the statements therein, at the time and in
        light of the circumstances under which they were made, not
        misleading.  The financial statements of Buyer included in
        Buyer's SEC Documents complied as to form in all material
        respects with applicable accounting requirements and with
        published rules and regulations of the Commission with respect
        thereto, have been prepared in accordance with generally accepted
        accounting principles applied on a consistent basis during the
        periods involved (except as may be indicated therein or in the
        notes thereto or, in the case of the unaudited statements, as
        permitted by Form 10-Q of the Commission) and fairly present
        (subject, in the case of the unaudited statements, to normal
        recurring audit adjustments) the financial position of Buyer as
        at the dates thereof and the results of its operations and cash
        flows for the periods then ended.


                                   ARTICLE IV

                                CERTAIN COVENANTS

             Section 4.1.  Expenses.  Except as provided herein, each
        party shall bear its own expenses, tax and other costs incident
        to or resulting from this Agreement and the transactions
        contemplated herein.  All realty transfer taxes shall be paid
        one-half (1/2) by Sellers and one-half (1/2) by Buyer.  All
        recording costs for instruments of transfer, all sales taxes and
        all filing fees for the HSR application shall be paid by Buyer.

             Section 4.2.  Further Assurances.  

                  (a)  From time to time and at any time after the
        Closing, and without further expense to Buyer, Sellers and the
        Shareholders will execute and furnish to Buyer such instruments
        of assignment and transfer, conveyances, bills of sale and other
        documents as Buyer may reasonably request in order to effect or
        evidence the transfer to Buyer of all Sellers' right, title, and
        interest in and to the Assets, or to collect, and reduce to
        Buyer's possession, the Assets, or to otherwise give full effect
        to this Agreement and to effectuate the intent of the parties.



                                       29
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<PAGE>





                  (b)  From time to time and at any time after the
        Closing, and without further expense to Sellers or the
        Shareholders, Buyer will execute and furnish to Sellers such
        instruments of assumption as Sellers or the Shareholders may
        reasonably request in order to effect or evidence the assumption
        by Buyer of the Assumed Liabilities or to otherwise give full
        effect to this Agreement and to effectuate the intent of the
        parties.

             Section 4.3.  Confidentiality of Information.  Sellers and
        the Shareholders agree that such party (a) has obtained and may
        in the future obtain confidential and proprietary information
        about Sellers, Buyer or any parent, subsidiary or affiliate of
        Buyer (as the case may be, a "Buyer Entity"),  including, but not
        limited to, business plans, strategies, customer lists, and
        financial and statistical information and (b) will not disclose,
        directly or indirectly, such information or use it for any
        purpose other than for such Buyer Entity's benefit.  The
        obligations of confidentiality in this Section 4.3 shall not
        apply to any information which (a) was known to such party or to
        the public prior to receipt by such party from another party
        hereto; (b) is or becomes generally available to the public other
        than as a breach of this Agreement by such party; (c) is
        disclosed to such party by a third party having a legal right to
        make such disclosure (e.g., other than by employees, auditors and
        other representatives of the parties to this Agreement); or (d)
        is required to be disclosed in compliance with applicable law or
        legal process.  The obligations under this Section 4.3 shall
        terminate on the third anniversary of the Closing Date.

                  Sellers and the Shareholders agree that damages are an
        inadequate remedy for any breach of this Section 4.3 and that
        Buyer shall, whether or not it is pursuing any potential remedies
        at law, be entitled to equitable relief in the form of
        preliminary and permanent injunctions without bond or other
        security upon any actual or threatened breach hereof.

             Section 4.4.  Corporate Identity.  Sellers and the
        Shareholders acknowledge that, as between them and Buyer, as of
        and following the Closing, Buyer has the absolute and exclusive
        proprietary right to all names, marks, trade names and trademarks
        incorporating the name "Lancaster Laboratories," "LLI," "Express
        Labs" or any derivative or variation thereof or any distinctive
        mark associated therewith (collectively, "LLI Names") and to all
        corporate symbols or logos incorporating the name "Lancaster
        Laboratories," "LLI," "Express Labs" or any derivative or
        variation thereof or any distinctive mark associated therewith
        (collectively, "LLI Logos"), and that all rights thereto and the
        goodwill represented thereby and pertaining thereto are being
        transferred to Buyer.  From and after the Closing Date neither
        Sellers nor the Shareholders will use any LLI Name or LLI Logo in
        or on any of their literature, sales materials or otherwise in
        connection with the sale of any services.


                                       30
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<PAGE>





             Section 4.5.  Covenant Against Competition; Solicitation and
        Hiring of Former Employees.  For a period of three years after
        the Closing, Sellers will not, directly or indirectly:

                  (a)  engage in any business other than MSAI that
        provides any services competitive with those offered by LLI as of
        the Closing Date in any jurisdiction within the United States of
        America in which LLI offers such services as of the Closing Date,
        or 

                  (b)  without the prior written consent of Buyer, (i)
        solicit any person employed by Buyer (or any of its affiliates)
        to terminate his or her employment with Buyer (or any of such
        affiliates) or to become an employee of Sellers or any affiliate
        of Sellers, or (ii) hire any such employee except employees
        involuntarily terminated by Buyer (or any of its affiliates).

                       The parties hereto agree that the scope, duration
        and geographic area of the covenant against competition set forth
        in Section 4.5(a) above are reasonable.  In the event that any
        court of competent jurisdiction determines that the scope,
        duration or the geographic area, or both, are unreasonable and
        that such provision is to that extent unenforceable, the parties
        hereto agree that the provision shall remain in full force and
        effect for the greatest time period and in the greatest scope,
        the greatest time period and in the greatest area that would not
        render it unenforceable.  The parties intend that such
        noncompetition provision shall be deemed to be a series of
        separate covenants, one for each and every county of each and
        every state in which this provision is intended to be effective.

                       Sellers agree that damages are an inadequate
        remedy for any breach of this Section 4.5 and that Buyer shall,
        whether or not it is pursuing any potential remedies at law, be
        entitled to equitable relief in the form of preliminary and
        permanent injunctions without bond or other security upon any
        actual or threatened breach hereof.

             Section 4.6.  Payment of Liabilities.  Sellers and the
        Shareholders each covenant to pay any and all liabilities and
        obligations of Sellers that may exist as of the Closing Date
        (including those liabilities which are then known, unknown,
        absolute, contingent or otherwise, and whether due or to become
        due) to the extent that such liabilities and obligations are not
        Assumed Liabilities.  

             Section 4.7.  Certain Employee Matters.

                  (a)  Buyer will use its best efforts to give employees
        of Sellers credit for service with Sellers when such employees
        become eligible for participation in Buyer's 401(k) plan and
        other plans which have vesting or length of service requirements,
        and will recognize Sellers' policies with respect to vacation and
        personal time days accrued through the Closing Date.  Buyer,

                                       31
PAGE
<PAGE>





        however, reserves the right to conform such policies after the
        Closing Date to Buyer's and its parent's policies, and assumes
        all responsibility for notifying employees of such changes as
        they become effective.

                  (b)  As permitted by Revenue Procedure 84-77, Buyer
        shall be responsible to provide employees of Sellers a statement
        on Form W-2 covering calendar year 1995.  Sellers shall provide
        to Buyer all records concerning 1995 compensation and
        withholding, through the Closing Date, for each such employee.

             Section 4.8.  SEC Financials.  Sellers and the Shareholders
        acknowledge that Thermo Process Systems Inc., Buyer's managing
        general partner, may be required to file a Current Report on Form
        8-K with the Securities and Exchange Commission pursuant to the
        Securities Exchange Act of 1934, as amended, as a result of the
        acquisition of the Assets.  Buyer agrees that it shall be
        responsible for preparing any financial statements which may be
        required to comply with the requirements of Item 7 of Form 8-K
        and Sellers and the Shareholders agree to cooperate fully in the
        preparation of such financial statements.  Buyer shall be
        responsible for paying all fees charged by its independent
        accountants for auditing such financial statements.

             Section 4.9.   Continuation of Insurance Coverage.  Buyer,
        at its expense, shall purchase and maintain during its ownership
        of the Assets (but in no event terminating prior to March 31,
        1998) professional liability insurance coverage on a claims-made
        basis, such insurance to include coverage for claims brought
        against Sellers based upon acts or omissions occurring within the
        ten (10) year period immediately prior to the Closing Date.  In
        addition, Buyer, at its expense, shall purchase and maintain
        during its ownership of the Assets general liability insurance
        coverage on an occurrences basis, including contractual liability
        coverage.  Both the professional liability insurance policy and
        the general liability insurance policy purchased by Buyer shall
        be in such amounts, and upon such terms as are no less favorable
        to Buyer as Sellers' existing policies are to Sellers.  


                                    ARTICLE V

                                 INDEMNIFICATION

             Section 5.1.  Indemnification by Sellers and the
        Shareholders.  Buyer upon its demand shall be indemnified by
        Sellers and the Shareholders, jointly and severally, for the full
        amount of all damages (as defined below) suffered by it as a
        direct or indirect result of:

                  (a)  the inaccuracy of any representation or warranty
        made by Sellers or by the Shareholders in or pursuant to this
        Agreement (including without limitation Section 3.2); 


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                  (b)  any failure by Sellers or the Shareholders to
        perform any obligation or comply with any covenant or agreement
        specified herein (including without limitation the covenants set
        forth in Article 4) or in any other document executed at the
        Closing;

                  (c)  any claim asserted with respect to any liabilities
        that are not Assumed Liabilities;

                  (d)  the imposition of any successor or transferee
        liability including, without limitation, any liability to the
        Pennsylvania Department of Revenue as a result of Sellers'
        failure to comply with the bulk sale provisions of the
        Pennsylvania Fiscal Code or the Pennsylvania Tax Reform Act of
        1971 and any other bulk sale provision applicable to the
        transactions contemplated in this Agreement (collectively, the
        "Bulk Sales Acts"); and

                  (e)  any other claims (including, without limitation,
        claims alleging death or injury to persons or damage to property
        caused by, or resulting from, any defect or claimed defect in or
        with respect to services of LLI (whether based in tort or
        contract), any tort, default in the performance or breach of any
        contract or commitment, or for consequential, special or punitive
        damages) for all conditions, acts or failures to act of Sellers
        or other occurrences prior to or on the Closing Date or resulting
        from or caused by any service provided by LLI prior to the
        Closing Date; all bodily injury and property damage arising after
        the Closing Date out of continuous or repeated exposure to
        substantially the same general conditions in existence on or
        before the Closing Date shall be considered as arising out of one
        occurrence prior to the Closing Date.

                  For the purpose of Sections 5.1, 5.2, 5.3 and 5.4, (a)
        the term "damages" shall be determined and computed by reference
        to the effect of the compensable event on Buyer (and not just by
        reference to any effect on the value of the shares of Buyer or
        Buyer's parent companies), and shall be deemed to include (i) all
        losses, liabilities, expenses or costs incurred by Buyer,
        including reasonable attorneys' fees, and (ii) interest at a rate
        per annum equal to that announced from time to time by First
        National Bank of Boston as its "base rate" (or the legal rate of
        interest, if lower) from the date 30 days after notice of any
        such claim for indemnification is given to Sellers and the
        Shareholders, or if an unliquidated claim, from such later date
        as the claim is liquidated, to the date full indemnification is
        made therefor; and (b) damages shall not include any amounts for
        which Buyer actually receives payment under an insurance policy,
        excluding self-insured amounts and deductible amounts.

                  Buyer shall give Sellers and the Shareholders notice of
        any claim, action or proceeding by a third party which is
        reasonably likely to result in a claim for indemnification under
        this Section 5.1.  Buyer shall have the right to defend, contest,

                                       33
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        protest, settle and otherwise control the resolution of any such
        claim, action or proceeding (unless Buyer decides not to contest
        such matter or such claim, action or proceeding involves only
        monetary damages and relates to a matter which, if adversely
        determined, would have no impact on Buyer's liability in another
        proceeding, goodwill or reputation or on the future conduct by
        Buyer of its business or on its tax or accounting positions, in
        which case the next paragraph shall apply), but shall keep
        Sellers and the Shareholders apprised of material developments.
        Sellers and the Shareholders shall have the right to participate
        in any such legal proceeding, subject to Buyer's right of control
        thereof, at their expense and with counsel selected by them.

                  If the claim, action or proceeding is one which, if
        adversely determined, would involve only monetary damages and
        have no impact on Buyer's liability in another proceeding,
        goodwill or reputation or on the future conduct by Buyer of its
        business or on its tax or accounting positions, then (i) Sellers
        and the Shareholders shall have the right, at their expense, to
        defend, contest, protest and otherwise control the resolution
        thereof, but shall keep Buyer apprised of material developments,
        and (ii) Buyer shall have the right to participate in any such
        legal proceeding, subject to the right of Sellers' and the
        Shareholders' right of control thereof, at Buyer's expense and
        with counsel selected by Buyer.

             Section 5.2.  Limitations of Liability.  

                  (a)  The right of Buyer to be indemnified pursuant to
        Section 5.1 shall not apply until the sum of the damages suffered
        by Buyer on a cumulative basis exceeds One Hundred Thousand
        Dollars ($100,000), whereupon Buyer shall be entitled to recover
        all damages suffered which exceed One Hundred Thousand Dollars
        ($100,000).  

                  (b)  The right of Buyer to be indemnified pursuant to
        Section 5.1 shall be as follows:

                       (i)  With respect to claims based solely on
             breaches of the representations and warranties in Section
             3.2(j), Buyer shall have the right to be indemnified for any
             claims that are asserted before the expiration of any
             applicable statute of limitations for unpaid Taxes;

                       (ii)  With respect to claims based solely on
             breaches of the representations and warranties in Section
             3.2(a), the first sentence of Section 3.2(b), Section
             3.2(c), Section 3.2(f), Section 3.2(g), the first sentence
             of Section 3.2(i) or the first sentence of Section 3.2(k),
             Buyer's right to be indemnified pursuant to Section 5.1
             shall survive the execution of this Agreement indefinitely;

                      (iii)  With respect to claims based solely on
             breaches of the representations and warranties in Section

                                       34
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             3.2, other than breaches of the representation and
             warranties identified in Subsections 5(b)(i) or 5(b)(ii)
             above, Buyer shall have the right to be indemnified only for
             such claims that have been asserted by Buyer before the
             second anniversary of the Closing Date; and

                       (iv)  Notwithstanding the provisions of
             Subsections 5.2(b)(i), (ii) and (iii) above, the limitations
             in this Section 5.2 shall not apply in the event either
             Sellers or the Shareholders have actual knowledge of a
             breach of a representation or warranty on or prior to the
             Closing Date.

                  (c)  With respect to claims based solely on the
        breaches of the representations and warranties in Section 3.2,
        the right of Buyer to be indemnified pursuant to Section 5.1
        shall constitute Buyer's sole and exclusive remedy.

             Section 5.3.  Indemnification by Buyer.  Buyer hereby agrees
        to indemnify Sellers and the Shareholders upon their demand for
        the full amount of all damages suffered by any of them from (i)
        the inaccuracy of any representation or warranty made by Buyer in
        or pursuant to this Agreement or (ii) any failure by Buyer to
        perform any obligation or comply with any covenant or agreement
        specified herein or in any other document executed at the
        Closing.  "Damages" shall be calculated for this purpose in a
        manner consistent with the principles of Section 5.1.  

                  Sellers and the Shareholders shall give Buyer notice of
        any claim, action or proceeding by a third party which is
        reasonably likely to result in a claim for indemnification by
        Buyer under this Section 5.3. Buyer shall have the right to
        defend, contest, protest and otherwise control the resolution of
        any such claim, action or proceeding, but shall keep Sellers and
        the Shareholders apprised of material developments.  Sellers and
        the Shareholders shall have the right to participate in any such
        legal proceeding, subject to Buyer's right to control thereof, at
        their expense and represented by counsel of their choice.

             Section 5.4.  Limitation of Liability.  

                  (a)  The right of Sellers and the Shareholders to be
        indemnified pursuant to Section 5.3 shall not apply until the sum
        of the damages suffered by Sellers and the Shareholders on a
        cumulative basis exceeds One Hundred Thousand Dollars ($100,000),
        whereupon Sellers and the Shareholders shall be entitled to
        recover all damages suffered which exceed One Hundred Thousand
        Dollars ($100,000).  

                  (b)  The liability of Buyer under this Section 5.4 for
        breaches of representations and warranties in Section 3.3 of this
        Agreement shall only be for claims that are asserted by Sellers
        and the Shareholders before the second anniversary of the Closing
        Date; provided, however, that such two-year limitation shall not

                                       35
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        apply in the event that Buyer has actual knowledge of a breach of
        a representation or warranty on or prior to the Closing Date.

                  (c)  With respect to claims based solely on the
        breaches of the representations and warranties in Section 3.3,
        the right of Sellers and the Shareholders to be indemnified
        pursuant to Section 5.3 shall constitute Sellers' and the
        Shareholders' sole and exclusive remedy.


                                   ARTICLE VI

                        CONDITIONS TO BUYER'S OBLIGATIONS

             Section 6.1.  Representations, Warranties and Covenants.
        The representations and warranties of Sellers contained in this
        Agreement shall be true, complete and accurate at and as of the
        Closing Date, shall be deemed made again at and as of such date
        and shall be true, complete and accurate as so made again;
        Sellers shall have performed all obligations and complied with
        all covenants required by this Agreement to be performed or
        complied with by it on or prior to the Closing Date; and Buyer
        shall have received from LLI a certificate signed by an officer
        of LLI and a certificate signed by the managing partner of
        Clewmark, each dated the Closing Date to the foregoing effect.

             Section 6.2.  Approvals of Governmental Authorities.  Any
        and all permits, approvals or other action, other than compliance
        with the Pennsylvania Bulk Sales Acts, necessary or advisable in
        the reasonable opinion of Buyer's counsel to consummate lawfully
        the transactions contemplated by this Agreement under any and all
        federal, state and local government laws and regulations,
        including but not limited to any necessary approvals required
        from the Federal Trade Commission or the United States Department
        of Justice under the HSR Act, shall have been received or
        performed and shall not contain or result in any provision which
        is unduly burdensome to Buyer in its reasonable opinion.

             Section 6.3.  No Adverse Proceedings or Events.  No suit,
        action or other proceeding against Sellers or Buyer or their
        respective officers, directors or partners shall have been
        instituted, or any investigation undertaken which might
        reasonably be expected to result in any such suit, action or
        proceeding, nor any order of court entered, at or before the
        Closing, in which it is, or will be, sought to restrain or
        prohibit the transactions contemplated by this Agreement, create
        an obligation to Buyer or create a lien on any of the Assets
        other than an Assumed Liability.

             Section 6.4.  No Adverse Change.  There shall not have
        occurred an event or condition which would create a lien upon any
        of the Assets, create an obligation of Buyer, or which would
        adversely affect the transactions contemplated by this Agreement.
        Furthermore, there shall not exist any development in the status

                                       36
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        or outlook of Sellers' business between September 30, 1994 and
        the Closing Date, which is, in the reasonable judgment of Buyer,
        materially adverse to Sellers.

             Section 6.5.  Consents and Actions; Contracts.  All
        contractual rights shall have been assigned to Buyer.

             Section 6.6.  Due Diligence.  Buyer shall be satisfied, in
        its sole discretion, with the results of its due diligence review
        of LLI's business and the Assets of Sellers, including but not
        limited to Buyer's contacts with customers, employees and
        suppliers, review of environmental, tax, employee benefits and
        insurance matters, review of the lease terms for any and all real
        property occupied by Sellers and legal due diligence including
        but not limited to litigation and contract review.  If requested
        by Buyer, Sellers shall have negotiated mutually satisfactory
        amendments to all leases, agreements and other arrangements
        between Sellers and other parties currently having an interest in
        such property.

             Section 6.7.  LLI Approval.  The Board of Directors and the
        Shareholders of LLI shall have duly authorized the execution and
        carrying out of this Agreement; LLI shall deliver to Buyer on the
        Closing Date copies of resolutions of the Board of Directors and
        of the Shareholders of LLI certified by the Secretary of LLI
        evidencing the same.

             Section 6.8  Clewmark Approval.  The partners of Clewmark
        shall have authorized the execution and carrying out of this
        Agreement; Clewmark shall deliver to Buyer on the Closing Date
        copies of resolutions of the partners of Clewmark certified by
        the general partner evidencing the same.

             Section 6.9.  Noncompetition Agreement.  The Shareholders
        shall have executed and delivered to Buyer noncompetition
        agreements in the form of Exhibit C.

             Section 6.10.  Other Evidence.  Buyer shall have received
        from Sellers such further certificates and documents evidencing
        due action in accordance with this Agreement as Buyer shall
        reasonably request.


                                   ARTICLE VII

                       CONDITIONS TO SELLERS' OBLIGATIONS

             Section 7.1.  Representations, Warranties and Covenants.
        The representations and warranties of Buyer contained in this
        Agreement shall be true, complete and accurate at and as of the
        Closing Date, shall be deemed made again at and as of such date
        and shall be true, complete and accurate as so made again, and
        Buyer shall have performed all obligations and complied with all
        covenants required by this Agreement to be performed or complied

                                       37
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        with by it on or prior to the Closing and Sellers shall have
        received from Buyer certificates signed by an officer of Buyer
        and dated as of the Closing Date to the foregoing effect.

             Section 7.2.  No Adverse Proceedings or Events.  No suit,
        action or other proceeding against Sellers or Buyer or their
        respective officers, directors or partners shall have been
        instituted, or any investigation undertaken which might
        reasonably be expected to result in any such suit, action or
        proceeding, nor any order of court entered, at or before the
        Closing, in which it is, or will be, sought to restrain or
        prohibit the transactions contemplated by this Agreement or
        obtain damages against Sellers, Buyer or any of their respective
        officers, directors or partners in connection therewith.

             Section 7.3.  Employment of Key Management.  At the Closing,
        Buyer shall employ Kenneth E. Hess, J. Wilson Hershey and
        Carol D. Hess on mutually acceptable terms and conditions.  

             Section 7.4.  Consent of Meridian Bank and Releases.  At or
        prior to the Closing, Buyer shall either (i) deliver to Sellers a
        consent by Meridian Bank to the transactions contemplated in this
        Agreement and specifically, to the assumption by Buyer of all of
        Sellers' indebtedness to Meridian Bank, or (ii) discharge all of
        Sellers' indebtedness to Meridian Bank.  In either case, Buyer
        shall cause Meridian Bank, at or prior to the Closing, to return
        to Sellers all guaranty or surety agreements executed by LLI,
        Clewmark or any of their respective shareholders and partners,
        guarantying Sellers' indebtedness to Meridian Bank.

             Section 7.5.  Evidence of Insurance Coverage.  At the
        Closing, Buyer shall deliver to Sellers an insurance binder
        evidencing that Buyer has secured the insurance policies
        contemplated in Section 4.9 above.  
         
             Section 7.6.  Other Evidence.  Buyer shall have furnished to
        Sellers such further certificates and documents evidencing due
        action in accordance with this Agreement as Sellers shall
        reasonably request.


                                  ARTICLE VIII

                                     GENERAL

             Section 8.1.  Notices.  All notices, requests, demands,
        consents and other communications which are required or permitted
        hereunder shall be in writing, and shall be deemed given when
        actually received or if earlier, one day after deposit with a
        nationally recognized air courier or express mail, charges
        prepaid or three days after deposit in the U.S. mail by certified
        mail, return receipt requested, postage prepaid, addressed as
        follows:


                                       38
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             If to Buyer:

                  Thermo Analytical Inc.
                  c/o Thermo Process Systems Inc.
                  81 Wyman Street
                  Waltham, Massachusetts  02254
                  Attention:  President

             If to Sellers or the Shareholders:

                  Earl H. Hess
                  2435 New Holland Pike
                  Lancaster, Pennsylvania  17540

             With a copy to:

                  Barley, Snyder, Senft & Cohen
                  126 E. King Street
                  Lancaster, PA  17602
                  Attention:  Kathleen A. Gray

        or to such other address as any party hereto may designate in
        writing to the other parties, specifying a change of address for
        the purpose of this Agreement.

             Section 8.2.  Survival and Materiality of Representations.
        Each of the representations, warranties and agreements made by
        the parties hereto shall be deemed material and shall survive the
        Closing and the consummation of the transactions contemplated
        hereby regardless of any due diligence investigations by the
        parties prior to the Closing.  All statements contained in any
        certificates or other instruments delivered by or on behalf of
        Buyer, Sellers or the Shareholders pursuant hereto or in
        connection with the transactions contemplated hereby shall be
        deemed material and shall constitute representations and
        warranties by the person making such statement.

             Section 8.3.  Entire Agreement.  This legal Agreement
        supersedes any and all oral or written agreements or
        understandings heretofore made relating to the subject matter
        hereof (including without limitation any confidentiality
        agreement between Buyer and Sellers and/or the Shareholders and
        the Letter of Intent executed by Buyer, Sellers and the
        Shareholders dated April 10, 1995) and constitutes the entire
        legal agreement of the parties relating to the subject matter
        hereof.

             Section 8.4.  Modification; Waiver.  This Agreement may be
        amended, modified or supplemented by a writing signed by the
        parties against whom enforcement of any amendment is sought.  The
        parties hereto may, by a written signed instrument, extend the
        time for or waive the performance of any of the obligations of


                                       39
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        another party hereto or waive compliance by such other party with
        any of the covenants or conditions contained herein.

             Section 8.5.  Bulk Sales Acts.  Buyer waives compliance by
        Sellers with the provisions of the Bulk Sales Acts, it being
        understood that Sellers and the Shareholders shall remain fully
        liable and shall indemnify Buyer for any and all losses or
        liabilities incurred by Buyer as a result of Sellers'
        non-compliance with the Bulk Sales Acts.

             Section 8.6.  No Implied Rights or Remedies.  Except as
        otherwise expressly provided herein, nothing herein expressed or
        implied is intended or shall be construed to confer upon or to
        give any person, firm or corporation, other than the parties
        hereto, any rights or remedies under or by reason of this
        Agreement.

             Section 8.7.  Headings.  The headings in this Agreement are
        inserted for convenience of reference only and shall not be a
        part of or control or affect the meaning hereof.

             Section 8.8.  Severability.  If any provision of this
        Agreement shall be declared void or unenforceable by any judicial
        or administrative authority, the validity of any other provision
        shall not be affected thereby.

             Section 8.9.  Counterparts.  This Agreement may be executed
        in several counterparts, each of which shall be deemed an
        original, but all of which together shall constitute one and the
        same instrument.

             Section 8.10.  Relief.  In the event litigation is
        maintained by a party to this Agreement against any other party
        to enforce this Agreement or to seek any remedy for breach, then
        the party prevailing in such litigation shall be entitled to
        recover from the non-prevailing party reasonable attorneys' fees
        and costs of suit.

             Section 8.11.  Exhibits.  The Exhibits attached hereto and
        referred to in this Agreement are a part of this Agreement for
        all purposes.

             Section 8.12.  Agreement Binding.  This Agreement and the
        rights and duties hereunder shall be binding upon and inure to
        the benefit of the successors, assigns, heirs and legal and
        personal representatives of the parties hereto.

             Section 8.13.  Gender.  In this Agreement, unless the
        context requires otherwise the singular includes the plural, the
        plural the singular, the masculine gender includes the neuter,
        masculine and feminine genders and vice versa.

             Section 8.14.  Governing Law.  This Agreement shall be
        governed exclusively by the laws of the Commonwealth of

                                       40
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        Pennsylvania and the federal laws of the United States of
        America.

             IN WITNESS WHEREOF, the parties have caused this Agreement
        to be duly executed as of the date first written above.

                                 THERMO ANALYTICAL INC.

                                 By: /s/ Daniel H. Stuermer
                                 Title: President


                                 LANCASTER LABORATORIES, INC.

                                 By: /s/ Earl H. Hess
                                 Title: President


                                 CLEWMARK HOLDINGS

                                 By: /s/ Kenneth E. Hess
                                 Title: Managing Partner








                                 SHAREHOLDERS

                                 /s/ Earl H. Hess
                                 Earl H. Hess


                                 /s/ Anita F. Hess
                                 Anita F. Hess

                                 /s/ Kenneth E. Hess
                                 Kenneth E. Hess

                                 /s/ J. Wilson Hershey
                                 J. Wilson Hershey

                                 /s/ Carol D. Hess
                                 Carol D. Hess



        Thermo Process Systems Inc. is executing this Agreement solely
        for the purpose of evidencing its agreement to guaranty and to
        become surety for certain obligations of Thermo Analytical Inc.
        as more fully set forth in Section 1.5 of this Agreement.

                                       41
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                                 THERMO PROCESS SYSTEMS INC.

                                 By: /s/ John P. Appleton
                                 Title:  President and 
                                         Chief Executive Officer

















































                                       42
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                      EXHIBITS TO ASSET PURCHASE AGREEMENT



             Exhibit A - Excluded Assets

             Exhibit B - Allocation Schedule

             Exhibit C - Non-Competition Agreement

             Exhibit D - Disclosure Schedule











































                                       43



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