<PAGE>

                                                                   Exhibit 10.41

                          AIRCRAFT PURCHASE AGREEMENT
                          ---------------------------

     THIS AIRCRAFT PURCHASE AGREEMENT (this "Agreement") is entered into as of
the 20th day of November, 2000, by and between SYBRON INTERNATIONAL CORPORATION,
a Wisconsin corporation, or its assign ("Buyer"), and VOLARE PARTNERS, LLC, a
Wisconsin limited liability company ("Seller").

                                R E C I T A L S

     WHEREAS, the Seller desires to sell the Aircraft (as defined in Section
1.1(a)) to the Buyer and the Buyer desires to purchase the Aircraft from the
Seller on the terms and conditions contained herein;

     WHEREAS, it is the intention of Buyer that the acquisition by Buyer of
title in the Aircraft qualify as an exchange within the meaning of Section 1031
of the Internal Revenue Code of 1986, as amended and the regulations promulgated
thereunder (the "IRC"), and specifically as a "reverse exchange" in accordance
with IRS Revenue Procedure 2000-37 ("Rev. Proc. 2000-37"); and,

     WHEREAS, it is the intention of Seller that the sale of the Aircraft
shall qualify as an exchange within the meaning of IRC Section 1031.

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
herein contained and for other good and valuable consideration, the parties
hereto agree as follows:

ARTICLE 1.  SUBJECT MATTER OF SALE
            ----------------------

1.1  (a) Subject to the provisions of this Agreement, the Seller agrees to
     sell and to deliver to the Buyer and the Buyer agrees to buy and take
     delivery from the Seller all of the Seller's right, title and interest in
     and to that certain Cessna Citation III model aircraft bearing
     manufacturer's serial number 650-063 and FAA Registration Number N72LE,
     together with two TFE 731-3C model engines bearing manufacturer's serial
     numbers 87255 (L), and 87181 (R), and all  equipment, accessories,
     instruments, and components, and other parts installed thereon or
     appurtenant thereto, all loose equipment and spare parts, and all Aircraft
     Documents as defined in Section 1.1(b) (all of the foregoing items
     collectively referred to as the "Aircraft").

     (b) For purposes hereof, the term "Aircraft Documents" shall mean and
     include all flight records, maintenance and shop records, historical
     records, modification records, overhaul records, maintenance manuals,
     repair manuals, flight manuals, crew manuals, warranty documents, logbooks,
     authorizations, wiring diagrams, drawings and data required or recommended
     by the manufacturer of the airframe, engines or any component or part of
     the Aircraft, or required with respect to the Aircraft, and all issued FAA
     Form 337's.

<PAGE>

1.2  The Aircraft shall be subject to Buyer's exclusive right to purchase and
     Seller shall remove the Aircraft from the market and cancel any existing
     back-up offers, unless and until Buyer rejects the Aircraft, as provided
     for herein.

ARTICLE 2.  PURCHASE PRICE
            --------------

2.1  All prices, amounts and payments referred to herein shall be in United
     States Dollars.  The total purchase price for the Aircraft shall be FOUR
     MILLION NINE HUNDRED THOUSAND DOLLARS (USD 4,900,000) (the "Purchase
     Price") payable at the Closing pursuant to Article 3 hereof.

ARTICLE 3.  INSPECTIONS; CLOSINGS; DELIVERY OF AIRCRAFT
            -------------------------------------------

3.1  Pre-Purchase Inspection.
     -----------------------

     (a)  On October 30, 2000 Seller delivered the Aircraft at the Cessna
          Service Center, Toledo, Ohio (the "Inspection Facility"), and provided
          the Buyer with certain access to the Aircraft and the records
          (including without limitation the Aircraft Documents) relating thereto
          for the purpose of inspection (the "Pre-Purchase Inspection") by Buyer
          and/or the Buyer's duly authorized technical representatives, in order
          to determine that each item of the Aircraft is acceptable to Buyer and
          in accordance with the provisions of this Agreement.  The cost of the
          Pre-Purchase Inspection matters requested by Buyer shall be paid for
          by Buyer.  The Pre-Purchase Inspection resulted in a report from
          Cessna Service Center entitled "AirCraft Survey Discrepancies" and
          dated October 30, 2000 (the "Pre-Purchase Report").   The parties
          shall use their best efforts to promptly address the results of the
          Pre-Purchase Inspection.  The foregoing shall not affect any warranty
          claim of Buyer under the terms of this Agreement.  The parties
          acknowledge and agree that Buyer's test and acceptance flight shall
          occur in connection with delivery of the Aircraft to the Delivery
          Location (for the purpose of clarity the parties acknowledge and agree
          that Buyer shall be permitted to place an observer on the test flight
          and that Seller's designated pilot shall command the Aircraft).

     (b)  The parties acknowledge and agree that the results of the Pre-Purchase
          Inspection are listed in the Pre-Purchase Report, attached hereto as
          Exhibit A.  Seller agrees to promptly remedy all discrepancies noted
          on the Pre-Purchase Report (for the purposes of clarity, Seller shall
          correct all matters on the Pre-Purchase Report that are marked "yes"
          as unairworthy). Seller shall, promptly and expeditiously remedy such
          discrepancies and demonstrate, at the Seller's sole cost and expense,
          that the Aircraft is in the condition required for delivery.

     (c)  If Seller does not accomplish the foregoing remedial actions in
          accordance with this Agreement with respect to matters marked
          "Unairworthy Yes" on the Pre-Purchase Report, Buyer shall have the
          right to terminate this Agreement upon written notice from Buyer to
          Seller, immediately receive from Seller

                                       2
<PAGE>

          reimbursement of Buyer's costs of the Pre-Purchase Inspection, and any
          test and acceptance flight costs.

     (d)  Notwithstanding the foregoing, if at any time prior to the Closing
          Time (as defined in Section 3.2(c)), the Aircraft is destroyed or
          suffers material damage which renders it of substantially lower
          economic value than the Purchase Price, Buyer shall have the right to
          terminate this Agreement upon written notice from Buyer to Seller and
          the provisions of Section 3.1(b)(i) shall apply.  If the Aircraft
          suffers damage that does not substantially reduce the economic value,
          then the parties shall negotiate in good faith to adjust the Purchase
          Price.  If the parties are unable to reach agreement on a Purchase
          Price reduction, the parties shall select a mutually agreed and
          qualified third party appraiser to determine the Purchase Price
          adjustment. If the parties are unable to reach agreement on whether
          damage results in "substantially lower economic value", the parties
          shall select a mutually agreed and qualified third party appraiser to
          determine whether the damage results in "substantially lower economic
          value."  The costs of the third party appraiser shall be shared
          equally by the parties.

3.2  Closing.
     -------

     (a)  On or before 4 December 2000:

          (i)    Seller shall deposit with Insured Aircraft Title Service, Inc.,
                 Oklahoma City, Oklahoma (the "Escrow Agent"), a Federal
                 Aviation Administration Aeronautical Center Form 8050-2 Bill of
                 Sale (hereinafter "FAA Bill of Sale") acceptable for filing
                 with the Federal Aviation Administration, undated but otherwise
                 fully completed, and executed on behalf of Seller, together
                 with a Warranty Bill of Sale in the form attached hereto as
                 Exhibit C, either of which shall be in a form sufficient to
                 effect vesting of title in Buyer; and,

          (ii)   Buyer shall deposit with the Escrow Agent an Application for
                 Registration for the Aircraft fully completed (except for date)
                 and executed on behalf of Buyer.

          (iii)  Seller shall permit the Cessna Service Center in Milwaukee,
                 Wisconsin to examine the left and right stabilizer "leading
                 edges" of the Aircraft. In the event Cessna recommends
                 remediation with respect thereto, said remediation shall be
                 performed promptly and before the Delivery Inspection (defined
                 in Section 3.3(a) below). Payment for such remediation shall be
                 negotiated by the parties, but in no event shall Buyer be
                 required to pay more than 50% of said remediation costs.

     (b)  Within one (1) Business Day of receipt by the parties of confirmation
          from Escrow Agent that all of the actions and deliveries required in
          subparagraph (a) have been completed, Seller shall position the
          Aircraft at Duncan Aviation, Battle Creek Airport (Symbol - BTL) in
          Battle Creek, Michigan (the "Delivery

                                       3
<PAGE>

          Location") for transfer of title and consummation of the transaction
          (the "Closing"). Delivery of the Aircraft shall occur on December 4,
          2000; and the Closing shall occur on or before the third business day
          after the date of delivery of the Aircraft to the Delivery Location.
          Buyer may have its authorized representatives on the Aircraft for its
          flight to the Delivery Location. Seller shall provide Buyer with at
          least five (5) days advance notice of the departure date, time and
          airport for the flight to the Delivery Location.

     (c)  By the close of business on the third business day after the proper
          and timely positioning of the Aircraft at the Delivery Location, if
          all of Seller's obligations and agreements contained herein have then
          been fulfilled and no party is in breach hereof, (i) Buyer shall wire
          transfer the Purchase Price to Seller's Qualified Intermediary (as
          referenced in Section 9.11), and then (ii) Seller and Buyer shall
          immediately instruct the Escrow Agent to: (a) date and file the FAA
          Bill of Sale in the Civil Aircraft Registry, (b) date and file the
          Application for Registration with respect to the Aircraft, and (c)
          release the Warranty Bill of Sale to Buyer.  Contemporaneously
          therewith, Buyer shall execute and deliver (via facsimile and mail) to
          Seller an Aircraft Delivery Receipt in the form attached hereto as
          Exhibit D.  Risk of loss, casualty, liability or damage with respect
          to the Aircraft shall be deemed to pass to Buyer upon Buyer's delivery
          to Seller of the Aircraft Delivery Receipt (such time being the
          "Closing Time" and the date of the Closing Time being the "Closing
          Date").

     (d)  Both parties acknowledge and agree that this Agreement, and the
          parties' obligation to consummate the transaction contemplated hereby,
          is subject to the approval of the Sybron International Corporation's
          Board of Directors, including such Board of Directors' review of the
          transaction as a transaction between Buyer and a member of the Board
          of Directors of Buyer.  Buyer shall promptly take such actions as
          reasonably necessary to facilitate review of the transaction by the
          Board of Directors.

3.3  Acceptance Flight and Delivery Inspection
     -----------------------------------------

     Immediately prior to the Closing, on or about 4 December 2000, Buyer will
     conduct an acceptance and delivery flight, as outlined in Section 3.1(a)
     above and the Aircraft shall be delivered to Duncan Aviation facility at
     Battle Creek, Michigan, where the following inspection and work shall be
     performed.

     (a) Prior to the Closing, Buyer shall perform, at Buyer's expense, a
         delivery inspection of the Aircraft, including engine performance run,
         bore scope and avionics function check, (the "Delivery Inspection")
         that is reasonably necessary for Buyer to confirm Seller's continued
         compliance with Article 5.1 hereof, and that the Aircraft is in the
         same condition as it was upon completion of all remediation work
         (ordinary wear and tear excepted) at the Inspection Facility. The scope
         of the Delivery Inspection shall not exceed the scope of the Pre-
         Purchase Inspection and shall be completed by the close of business on
         December 6, 2000; provided, however, that the Delivery Inspection may
         include inspection of the Aircraft's de-icing systems, fuel tank
         inspection, mapping and

                                       4
<PAGE>

         engineering approval of the dent on the left horizontal stabilizer and
         inspection of recent incidents of hangar rash, even if such items were
         not included in the Pre-Purchase Inspection.

     (b) After the Closing and at Buyer's expense, Buyer shall perform the
         following: full exterior paint; partial interior paint, re-carpet and
         miscellaneous; and installation of TCAS I collision avoidance system,
         all at Buyer's discretion (the "Post-Closing Work").



ARTICLE 4.  REMEDIES UPON DEFAULT
            ---------------------

4.1  In the event Seller fails to deliver the Aircraft on or prior to December
     4, 2000 in the condition required under this Agreement or to perform all of
     its obligations under the terms and conditions set forth in this Agreement,
     for any reason (except by reason of force majeure beyond Seller's
     reasonable control), Buyer shall have the option upon written notice to
     Seller to terminate this Agreement, whereupon the Seller shall promptly
     refund any and all funds received from Buyer hereunder, and Seller shall
     promptly reimburse Buyer for all costs and expenses incurred by Buyer in
     connection with the Pre-Purchase Inspection, the Delivery Inspection and
     test flight.  Seller shall be deemed to be in default hereof in the event
     the Delivery Inspection results in a finding that Seller is not in
     compliance with Article 5.1 hereof or that the Aircraft is not in the same
     condition as it was upon completion of the remediation work at the
     Inspection Facility (ordinary wear and tear excepted). Buyer, at Buyer's
     election, shall either: (a) remediate any such noncompliance consistent
     with Seller's normal practices and standards, in which event, Seller shall
     promptly reimburse Buyer for the actual and reasonable costs of such
     remediation; or (b) if the non-compliance or altered condition are
     material, terminate and rescind this Agreement and, in such event, Seller
     shall reimburse Buyer for any costs incurred in the Pre-Purchase
     Inspection, the Delivery Inspection,  and for any test flights, and Buyer
     shall not accept delivery of the Aircraft, which shall remain in Seller's
     possession until the Closing.  In the event Buyer determines that
     remediation of a noncompliance item should be beyond Seller's normal
     practices and standards, Buyer shall pay the difference in cost (if
     greater).

ARTICLE 5.  CONDITION OF AIRCRAFT
            ---------------------

5.1  Seller covenants and agrees:

     (a)  that the Aircraft shall be delivered with any and all manufacturer's
          recommended inspections (calendar, hourly, or otherwise) and
          inspection items up to date and current;

     (b)  that the Aircraft shall be delivered with Aircraft engines enrolled in
          the Honeywell Engine Maintenance Service Program, fully paid up to the
          Closing Time by Seller,  with account in good standing and
          transferable to Buyer without cost to the Buyer other than the
          approximate transfer fee of $2,000;

                                       5
<PAGE>

     (c)  that the Aircraft shall be delivered in an airworthy and fully
          operational condition as prescribed by the manufacturer, fit for
          operations under Part 91 of the Federal Aviation Regulations, with all
          systems, components, engines, and installed equipment airworthy, fully
          functional and operative, meeting manufacturer's specifications, and
          with no damage or corrosion, or history thereof (except as described
          in Christopher Doerr's October 3, 2000 letter to Frank Jellinek, which
          letter is attached hereto as Exhibit A);

     (d)  that the Aircraft shall be delivered with a current and valid United
          States Standard Airworthiness Certificate, and all FAA Airworthiness
          Directives and all mandatory  Service Bulletins with effective dates
          on or prior to the Closing Date complied with;

     (e)  that the Aircraft shall be delivered with each engine able to produce
          its rated takeoff power in a ground power run;

     (f)  that the Aircraft shall be delivered with complete remedy of all
          matters listed as unairworthy in the Pre-Purchase Report;

     (g)  that the Aircraft shall be delivered with all Aircraft Documents
          printed or published in English, original and complete, continuous and
          up-to-date, and maintained in accordance with industry standards and
          the Federal Aviation Regulations; and

     (h)  that the Aircraft shall be delivered without any damage or any other
          event (e.g. hard landing, lightning strike, and similar matters)
          having occurred between the time the Pre-Purchase Inspection is
          completed and the Closing, either in connection with the Aircraft's
          condition or its operability, which renders the Aircraft in
          noncompliance with the condition it was in upon completion of the Pre-
          Purchase Inspection (ordinary wear and tear excepted), and the
          Aircraft shall have no more than sixty (60) additional hours of flight
          time upon delivery.

ARTICLE 6.  THIRD PARTY WARRANTIES
            ----------------------

6.1  To the extent that any warranties from manufacturers, service providers or
     suppliers are still in effect with respect to the Aircraft, such warranties
     and all rights thereunder are hereby irrevocably assigned to the Buyer and
     all documents evidencing same are included within the Aircraft Documents;
     and Seller will assist Buyer in maintaining continuity of the warranties
     and shall take all reasonable steps to assist Buyer in asserting and
     processing warranty claims directly with the manufacturers, service
     providers or suppliers.

ARTICLE 7.  REPRESENTATIONS, WARRANTIES AND LIMITATIONS
            -------------------------------------------

7.1  Representations and Warranties of the Seller.  The Seller hereby represents
     and warrants as of the date hereof and the Closing Date as follows:

                                       6
<PAGE>

     (a)  Seller is a limited liability company duly formed and validly existing
          under the laws of the State of Wisconsin, possessing perpetual
          existence as a legal entity, having the capacity to sue and be sued in
          its own name, having full power, legal right and authority to carry on
          its business as currently conducted, and to execute, deliver and
          perform the provisions of this Agreement.

     (b)  The execution, delivery, and performance by Seller of this Agreement
          have been duly authorized by all necessary action on behalf of Seller
          and do not conflict with or result in any breach of any of the terms
          or constitute a default under any document, instrument, or agreement
          to which Seller is a party.

     (c)  This Agreement constitutes the legal, valid and binding obligations of
          Seller enforceable against Seller in accordance with its terms.

     (d)  Seller has (and on the Closing Date shall have) exclusive, marketable,
          legal and equitable title to the Aircraft and all equipment,
          components and parts thereof, free and clear of any and all claims,
          liens, mortgages or other encumbrances of any kind.

     (e)  Seller is the owner of the Aircraft and is authorized to convey title
          to the Aircraft; and execution and delivery of the FAA Bill of Sale
          and Warranty Bill of Sale shall convey to Buyer exclusive, marketable,
          legal and equitable title to the Aircraft, free of any and all liens,
          claims and encumbrances of any kind.

     (f)  Other than due to remediation resulting from the Pre-Purchase
          Inspection, there are no parts, systems or components on the Aircraft
          that are on temporary loan or exchange.  Seller shall be responsible
          for the cost relating to reinstalling any such original parts, systems
          or components when such parts, systems or components become available.

     (g)  Seller agrees to indemnify and hold Buyer harmless from and against
          any claims made by any broker or other party claiming an interest in
          the Aircraft or the purchase price arising from an actual or alleged
          relationship or agreement with Seller.

     (h)  Seller has paid all Seller-related taxes, duties, penalties, charges,
          invoices, and statements with respect to the Aircraft incurred on or
          before the Closing Date, or if not paid, Seller hereby indemnifies
          Buyer from any such expenses.

     (i)  All representations and warranties hereunder shall run to Buyer, its
          successors, and to all persons to whom title to the Aircraft may be
          transferred.

     (j)  The Aircraft shall be in the condition provided under Article 5 of
          this Agreement.

     (k)  Seller warrants that the Aircraft shall comply with any applicable
          Type Certification Specifications and Supplemental Type Certification
          ("STC") and all applicable mandatory Service Bulletins, the engines
          shall comply with all

                                       7
<PAGE>

          applicable mandatory Service Bulletins, the Aircraft shall be, in all
          respects, airworthy pursuant to all applicable FAA requirements and
          approvals, and the Aircraft shall be void of any major repairs to the
          Aircraft as defined by the FAA regulations, except those repairs
          detailed in Exhibit A.

7.2  Representations and Warranties of the Buyer. The Buyer hereby represents
     --------------------------------------------
     and warrants as of the date hereof and the Closing Date as follows:

     (a)  Buyer is a corporation duly formed and validly existing under the laws
          of the State of Wisconsin, possessing perpetual existence as a legal
          entity, having the capacity to sue and be sued in its own name, having
          full power, legal right and authority to carry on its business as
          currently conducted, and to execute, deliver and perform the
          provisions of this Agreement.

     (b)  Subject to Section 3.2(d) hereof, the execution, delivery, and
          performance by Buyer of this Agreement have been duly authorized by
          all necessary action on behalf of Buyer and do not conflict with or
          result in any breach of any of the terms or constitute a default under
          any document, instrument, or agreement to which Buyer is a party.

     (c)  This Agreement constitutes the legal, valid and binding obligations of
          Buyer enforceable against Buyer in accordance with its terms.

7.3  EXCEPT AS OTHERWISE PROVIDED IN SECTION 7.1, THE AIRCRAFT IS HEREBY SOLD
     "AS IS" AND "WHERE IS."  ALL OTHER WARRANTIES AND AGREEMENTS, EXPRESS OR
     IMPLIED, ARISING BY LAW OR OTHERWISE, INCLUDING BUT NOT LIMITED TO, ANY
     OBLIGATION OR LIABILITY OF SELLER, WITH RESPECT TO THE IMPLIED WARRANTY OF
     MERCHANTABILITY, ANY IMPLIED WARRANTY ARISING FROM COURSE OF PERFORMANCE,
     COURSE OF DEALING OR USAGE OF TRADE, AND ANY IMPLIED WARRANTY OF FITNESS,
     ACTUAL OR IMPUTED, OR OTHER LIABILITY OF SELLER FOR LOSS OF USE, REVENUE OR
     PROFIT WITH RESPECT TO THE OPERATION OF THE AIRCRAFT AND THE WORK THEREON,
     ARE HEREBY EXCLUDED AND DISCLAIMED. NO AGREEMENT EXTENDING THIS WARRANTY
     SHALL BE BINDING UPON SELLER UNLESS IN WRITING AND SIGNED BY ITS DULY
     AUTHORIZED OFFICER OR REPRESENTATIVE.

ARTICLE 8.  COSTS AND SALES TAXES
            ---------------------

8.1  Aircraft Costs and Expenses.  Except as expressly provided to the contrary
     ---------------------------
     herein, Seller shall bear all operating costs and expenses of the Aircraft
     for flights to or from the Inspection Facility, and to the Delivery
     Location.

8.2  Transaction Costs and Expenses.  Except as expressly provided for herein,
     ------------------------------
     each of the parties hereto shall be responsible for its own transaction
     costs and expenses, including brokerage fees and legal fees.  Buyer and
     Seller shall each pay one-half of Escrow Agent's escrow fees and expenses.

                                       8
<PAGE>

8.3  Sales Taxes.  Any sales, use, or similar taxes, and any interest or
     -----------
     penalties on such taxes (unless such interest or penalty is a result of any
     act or omission by or on behalf of Seller, not otherwise authorized or
     directed by Buyer) arising from the sale of the Aircraft to Buyer,
     excluding income, capital gain or similar taxes imposed on Seller, shall be
     borne by Buyer.  In the event Seller receives notice of any proposed sales,
     use or similar tax,  audit, claim, assessment or proposed liability for
     which Buyer may be liable  under this section, Seller shall promptly notify
     Buyer of such potential tax  liability. Seller's failure to provide prompt
     notice of such potential tax liability to Buyer shall relieve Buyer of its
     obligation to pay or reimburse Seller under this section to the extent
     Buyer's rights have been impaired by Seller's delay. Buyer shall have the
     right to control, manage or defend any audit, claim, assessment, proposed
     liability or litigation with  respect to any sales use or similar tax for
     which Buyer bears responsibility under  this section.

ARTICLE 9.  MISCELLANEOUS
            -------------

9.1  Notices.  All communications and notices required or permitted by this
     -------
     Agreement shall be in writing and shall be deemed to have been duly given
     or made when delivered by hand, or five Business Days after being sent by
     registered mail, return receipt requested, postage prepaid, or on the next
     Business Day when sent by overnight courier or when transmitted by means of
     telecopy or other wire transmission (with request for assurance of receipt
     in a manner typical with respect to communications of that type and
     followed promptly with the original thereof) in each case at the address
     set forth below:

<TABLE>
<CAPTION>

<S>                                <C>                                                             <C>
     If to Buyer:                  Sybron International Corporation                                Tel:  (603) 433-6131
                                   c/o  Sybron Laboratory Products Corporation                     Fax:  (603) 436-3719
                                   10 Pleasant Street, Suite 300
                                   Portsmouth, New Hampshire 03801
                                   Attn: Daniel McNally, Esq.

     with a copy to:               Galland, Kharasch, Greenberg,                                   Tel:  (202) 342-5251
                                   Fellman & Swirsky, P.C.                                         Fax:  (202) 342-5219
                                   1054 Thirty-first Street, NW
                                   Washington, D.C.  20007/ Attn: Keith G. Swirsky, Esq.

     If to Seller:                 Volare Partners, LLC                                            Tel:  (___) ___________
                                   2903 West Hidden Lake Road                                      Fax:  (___) ___________
                                   Mequon, Wisconsin 53092
                                   Attn: Christopher Doerr

     With a copy to:               Quarles & Brady                                                 Tel:  (414) 277-5000
                                   411 East Wisconsin Avenue                                       Fax:  (414) 271-3552
                                   Milwaukee, Wisconsin  53202
                                   Attn: Henry Loos, Esq.
</TABLE>

                                       9
<PAGE>

9.2  Amendments.  The provisions of this Agreement may not be waived, altered,
     ----------
     modified, amended, supplemented or terminated in any manner whatsoever
     except by written instrument signed by an authorized signatory of each
     party hereto.

9.3  Entire Agreement.  Buyer and Seller agree that the terms and conditions of
     ----------------
     this Agreement, including all exhibits hereto, constitute the entire
     agreement between the parties.

9.4  Assignment.  Seller may not assign any of its rights or delegate any of its
     ----------
     obligations hereunder without the prior written consent of the Buyer.  This
     Agreement shall inure to the benefit of and be binding upon each of the
     parties hereto and their respective successors and assigns.

9.5  Headings and References.  The division of this Agreement into Sections, and
     -----------------------
     the insertion of headings, are for convenience of reference only and shall
     not affect the construction or interpretation of this Agreement.

9.6  Counterparts.  This Agreement may be fully executed in any number of
     ------------
     separate counterparts by each of the parties hereto, all such counterparts
     together constituting but one and the same instrument.

9.7  Governing Law.  This Agreement shall be governed, interpreted, and
     -------------
     construed in accordance with the laws of the State of New York, without
     regard for its conflict of laws provisions.  The parties agree that any
     lawsuit relating to this Agreement shall be filed in a federal court
     located in Milwaukee, Wisconsin.

9.8  Non-Waiver.  Any failure at any time of either party to enforce any
     ----------
     provision of this Agreement shall not constitute a waiver of such provision
     or prejudice the right of such party to enforce such provision at any
     subsequent time.

9.9  Time is of the Essence.  Unless specifically stated to the contrary herein,
     ----------------------
     time shall be of the essence for all events contemplated hereunder.

9.10 Survival.  The representations, warranties, covenants and agreements of
     --------
     Buyer and Seller shall survive the Closing in perpetuity.

9.11.1  Buyer's Tax-Free Exchange.  Buyer hereunder desires to exchange other
        -------------------------
     property of like kind and qualifying use within the meaning of Section IRC
     1031 as a "reverse exchange" pursuant to Rev. Proc. 2000-37, for all of
     Seller's right, title and interest in the Aircraft. Buyer expressly
     reserves the right to assign its rights and its obligations, hereunder to
     an "exchange accommodation titleholder" ("EAT") as that term is used in
     Rev. Proc. 2000-37, on or before the Closing Date. Buyer also expressly
     reserves the right to have the exchange accommodation titleholder reassign,
     subsequent to Closing, said rights and / or obligations to Buyer, and
     Seller agrees that in the event of Buyer's assignment to such EAT, Buyer is
     an intended third-party beneficiary of all of the EAT's rights hereunder.

                                       10
<PAGE>

9.11.2  Seller's Tax-Free Exchange.    Seller hereunder desires to exchange
        --------------------------
        other property of like kind and qualifying use within the meaning of IRC
        Section 1031 for all of Seller's right, title and interest in the
        Aircraft. Seller expressly reserves the right to assign its rights, but
        not its obligations, hereunder to a Qualified Intermediary as provided
        in IRC Reg. 1.1031(k)-1(g)(4) on or before the Closing Date.


                   [SIGNATURES APPEAR ON THE FOLLOWING PAGE]

                                       11
<PAGE>

     IN WITNESS WHEREOF, the undersigned have entered into this Agreement as of
the date first indicated above.


                                          SELLER:

                                          VOLARE PARTNERS, LLC



                                                 By:        /s/
                                                    ---------------------
                                                    Christopher L. Doerr


                                          BUYER:

                                          SYBRON INTERNATIONAL CORPORATION



                                                 By:        /s/
                                                    ----------------------
                                                    Frank H. Jellinek, Jr.
                                                    Executive Vice President

                                       12