Document:

<PAGE>

                                                                    Exhibit 10.5

                                    CONTRACT

                                     between

                     Bruker - Analytical X-Ray Systems GmbH

                         Ostliche Rheinbruckestrasse 50
                                 76187 Karlsruhe
                                     GERMANY

                                    - "AXS" -

                                       and

                     GKSS Forschungszentrum Geesthacht GmbH
                         Institut fur Werkstoffforschung
                               Max-Planck-Strasse
                                21502 Geesthacht

                                   - "GKSS" -

                              GKSS No. P3.3.02.F.02

                                    regarding

               the Purchase of Gradient Multi-layer X-ray Mirrors

CONFIDENTIAL TREATMENT HAS BEEN REQUESTED AS TO CERTAIN PORTIONS OF THIS
EXHIBIT, WHICH PORTIONS HAVE BEEN OMITTED AND REPLACED WITH [**] AND FILED
SEPARATELY WITH THE COMMISSION.

<PAGE>

1.       CONTRACT PRODUCTS

         "Contract products" are the X-ray mirrors defined in APPENDIX 1 to this
         Contract.

         GKSS agrees not to sell contract products to third parties. AXS agrees
         to make contract products available to the market at unfair [SIC]
         conditions.

2.       ORDERS

2.1      GKSS shall supply AXS on the basis of individual purchase orders
         ("orders") according to the conditions of this Contract.

2.2      Each order shall list the necessary information, such as item delivered
         (type of mirror, parameters, and quantity), delivery date, and contract
         number. GKSS shall immediately confirm each order in writing.

2.3      Unless otherwise expressly agreed in this Contract or in the respective
         order, the AXS terms and conditions of orders Appendixed to this
         Contract as APPENDIX 2 shall apply to orders. General GKSS terms and
         conditions of business that differ from the aforementioned terms and
         conditions shall not apply.

2.4      The prices established in APPENDIX 3 of this Contract shall be used as
         a basis for calculating charges; these are fixed prices until September
         30, 1999. Changes in price shall be made by mutual agreement and
         specified in writing. GKSS is prepared to renegotiate the prices in the
         event of an increase in the ordered quantity or a reduction of the
         market price.

2.5      Delivery shall be ex works, including packaging. GKSS shall ensure that
         the contract products are packed with consideration of all normal
         transportation risks.

2.6      Payment shall be made within 30 (thirty) days after delivery and upon
         receipt and verification of the invoice.

2.7      The delivery time for orders less than or equal to 15 units shall be 6
         (six) weeks, beginning with receipt of the commercially and technically
         cleared order by GKSS and confirmation of the order by GKSS. GKSS shall
         confirm the commercially and technically cleared order within two (2)
         weeks. The delivery period for subsequent orders shall be six (6) weeks
         after the delivery of each previous order.

3.       REQUIREMENTS FORECAST

         AXS shall first determine its projected needs for the contract products
         over a period of 12 (twelve) months, beginning on the effective date of
         this Contract.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

         This requirements forecast shall be adjusted and updated quarterly for
         each subsequent 12 (twelve) month period (revolving requirements
         forecast). The requirements forecast is intended to ensure the fewest
         interruptions in product deliveries to AXS and shall have no binding
         effect.

4.       RIGHT TO EMERGENCY PRODUCTION

4.1      GKSS recognizes that the continuous availability of the contract
         products is of the utmost importance to AXS. To ensure the continuous
         availability of the contract products for AXS, GKSS and AXS agree upon
         a right to emergency production as stipulated in Item 4.2 below.

4.2      If and to the extent that GKSS for any reason ceases production of the
         contract products or fails to fulfill its delivery obligations for a
         period of more than one (1) month, AXS may demand that GKSS enable AKS
         (particularly through the immediate provision by GKSS of technical
         information and documents, including software, needed for the
         production and testing of the contract products) to manufacture the
         contract products itself or to have contract products manufactured and
         distributed for it, and that GKSS grant the necessary rights (including
         relevant patent rights of GKSS).

         If the right to emergency production is exercised, then GKSS shall be
         entitled to an appropriate licensing fee for the use of its technical
         information and documents/software-programs and/or patent rights.

         In the event that it exercises its right to emergency production, AXS
         may require that GKSS make available at appropriate terms and
         conditions any special tools and/or equipment that would otherwise be
         unobtainable. If GKSS is unable to comply with this requirement, then
         it shall enable AXS to construct copies these special tools and/or
         equipment to the extent possible.

4.3      The right to emergency production shall end as soon as the circumstance
         requiring the right to emergency production has been permanently
         rectified. If a third party is used during emergency production, then
         this third party shall be required to enter into a confidentiality
         agreement.

         In the event of delay or inability to comply, any existing legal claims
         that exceed the terms of Item 4 shall remain unaffected thereby.

5.       WARRANTY AND LIABILITY

5.1      GKSS warrants that the contract products correspond to the
         specifications as defined in APPENDIX 1.

         The warranty period shall be 12 (twelve) months, beginning with
         acceptance of the contract products by AXS. The contract products must
         be accepted no later

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

         than eight (8) weeks after delivery by GKSS. If acceptance is not
         expressly refused within this period, then the contract products shall
         be considered as accepted.

         Complaints regarding defects must be promptly communicated to GKSS in
         writing. GKSS shall have the right to choose whether to repair the
         defect or to replace the defective contract product with a
         non-defective contract product within 20 (twenty) working days after
         the defective contract products have been received by GKSS. If the
         defects are not remedied, AXS shall have the right to demand at its
         discretion either a reduction of the price or cancellation of the
         Contract for the delivery about which a complaint has been made. Any
         further warranty claims shall be precluded in this case.

         The warranty period shall be three (3) months for any repaired or
         replaced contract products delivered, although it shall continue at
         least until the expiration of the original warranty period.

5.2      Liability of GKSS, its legal representatives, and its agents due to
         breach of contract or tort shall be limited to willful misconduct,
         gross negligence, lack of a guaranteed quality, and violation of an
         obligation if such violation would endanger the object of the Contract.
         Liability shall be limited to DM 500,000 (five hundred thousand
         Deutsche marks).

5.3      AXS shall indemnify GKSS against all product liability claims made by
         third parties due to faulty contract products.

6.       PROTECTION OF INDUSTRIAL PROPERTY RIGHTS

         If a third party exercises legitimate claims against AXS based upon or
         related to patent rights due to the method of manufacturing the
         contract products, then GKSS shall be obligated to choose between the
         following actions, to be performed at its own expense:

         - to obtain a right of use for AXS from the owner of the patent rights,
           or

         - to change the parts of the contract products relevant to the patent
           rights, or

         - to replace the parts relevant to the patent rights with parts not
           subject to the patent rights, or

         - to take back the corresponding contract products in exchange for a
           refund of the purchase price.

         A prerequisite for this is that AXS must immediately advise GKSS of
         all claims made, as well as all subsequent proceedings.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

         Any further claims resulting from infringement of patent rights owned
         by third parties shall be precluded.

7.       CONFIDENTIALITY

         Each contracting party shall maintain confidentiality regarding
         technical documents and information, as well as special knowledge of
         each other's internal matters, and shall divulge such information to
         third parties only with the explicit consent of the other contracting
         party, if and to the extent that this information is not generally
         known through publication or some other form without breaching this
         obligation of confidentiality.

         Any third parties that may become involved in this Contract must also
         be explicitly subjected to this obligation. This obligation shall
         continue in effect even after termination of this Contract.

8.       CONTRACTUAL PERIOD

         This Contract shall come into effect upon signing.
         AXS shall be obligated to purchase mirrors in a cumulative total volume
         of DM 360,000 during the period of October 1, 1998 to September 30,
         2001. The Contract may be terminated no earlier than September 30, 2000
         with a 12-month period of notice. In the event of this premature
         termination, AXS shall be obligated to purchase mirrors valued at no
         less then DM 240,000.

9.       OTHER PROVISIONS

9.1      No ancillary agreements exist. Changes and additions to this Contract
         must be made in writing.

9.2      Should individual provisions of this Contract be or become invalid,
         then the remaining provisions of this Agreement shall be unaffected
         thereby. In such an event, both sides shall replace the invalid
         provision with a valid provision that achieves the purpose of the
         affected provision to the extent possible. A similar procedure must be
         applied should a loophole become apparent in the course of completing
         the Contract.

9.3      Two (2) copies of the Contract shall be prepared, with each contracting
         party receiving one copy.

Geesthacht, October 1, 1998                  Karlsruhe, October 1, 1998
GKSS Forschungszentrum                       Bruker-AXS-Analytical X-Ray Systems
Geesthacht GmbH                              GmbH

---------------------------                  -----------------------------------

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

Appendix 1
                                 Specifications

<TABLE>
<CAPTION>
<S>                             <C>                <C>         <C>         <C>        <C>          <C>         <C>             <C>
-----------------------------------------------------------------------------------------------------------------------------------
C79298A3208C30                  Sl-Cu-S-40-P       [**]        [**]        [**]       [**]         [**]        [**]           [**]
-----------------------------------------------------------------------------------------------------------------------------------
C79298A208C31                   Sl-Cu-S-60-P       [**]        [**]        [**]       [**]         [**]        [**]           [**]
-----------------------------------------------------------------------------------------------------------------------------------
C79298A3208C32                  Sl-Cu-L-60-P       [**]        [**]        [**]       [**]         [**]        [**]           [**]
-----------------------------------------------------------------------------------------------------------------------------------
C79298A3208C33                  Sl-Co-S-40-P       [**]        [**]        [**]       [**]         [**]        [**]           [**]
-----------------------------------------------------------------------------------------------------------------------------------
C79298A3208C34                  Sl-Co-S-60-P       [**]        [**]        [**]       [**]         [**]        [**]           [**]
-----------------------------------------------------------------------------------------------------------------------------------
C79298A3208C35                  Sl-Co-L-60-P       [**]        [**]        [**]       [**]         [**]        [**]           [**]
-----------------------------------------------------------------------------------------------------------------------------------
Custom design according to
specifications to be determined
-----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

Dimensional tolerances:          [**]
Error of curvature:              [**]
Substrate material:              [**]
Material combination:            [**]
Coating material:                [**]

The procedure for determining the radioscopic mirror parameters is as follows:
(A) Measurements:
[**]
(B) Determination of mean reflectivity:
[**]
(C) Determination of the mean lattice constant:
[**]
(D) Determination of the mean gradient:
[**]

CONFIDENTIAL TREATMENT HAS BEEN REQUESTED AS TO CERTAIN PORTIONS OF THIS
EXHIBIT, WHICH PORTIONS HAVE BEEN OMITTED AND REPLACED WITH [**] AND FILED
SEPARATELY WITH THE COMMISSION.

<PAGE>

APPENDIX 2

                             CONDITIONS OF PURCHASE

I. PURCHASE ORDER AND ORDER CONFIRMATION
(1) Bruker AXS Analytical X-Ray Systems GmbH (purchaser) may cancel the purchase
order if the supplier has not provided written confirmation (order confirmation)
within two weeks after receipt.
(2) If the order confirmation differs from the purchase order, the purchaser
shall be bound only if he has agreed to the difference in writing. Specifically,
the purchaser shall be bound by the supplier's general terms and conditions of
business only to the extent that these terms and conditions are in accordance
with the purchaser's terms and conditions, or if the purchaser agrees to them in
writing. Acceptance of product deliveries or services, as well as payments, do
not constitute an agreement.
(3) Changes or additions to the purchase order shall be valid only if they are
confirmed in writing by the purchaser.

II. DELIVERY TIME
(1) Timeliness of product deliveries shall be determined based upon their
arrival at the receiving location specified by the purchaser, and the timeliness
of product deliveries involving assembly or installation, as well as services,
shall be based upon their acceptance.
(2) In the event of a discernible delay of a product delivery or service, the
purchaser must be notified of this delay immediately and his decision regarding
further action must be obtained.

III. TRANSFER OF RISK, SHIPPING
(1) For services and product deliveries involving assembly or installation, risk
shall be transferred upon acceptance; for product deliveries without setup or
assembly, risk shall be transferred upon their arrival at the receiving location
specified by the purchaser.
(2) Unless otherwise agreed, the supplier shall bear the costs for shipping and
packaging. In the case of pricing ex works or from the supplier's sales
warehouse, shipments must be made at the lowest possible cost in each case,
unless the purchaser has specified a particular mode of shipment. The supplier
shall bear additional costs incurred due to a failure to comply with shipping
regulations. The purchaser may also specify the mode of shipment for pricing
free consignee. The supplier shall bear the additional costs of any accelerated
shipment needed in order to comply with his delivery deadline.
(3) Each delivery shall be accompanied by a packing slip or delivery receipt
containing details of the contents as well as the complete purchase order
identification code. An immediate notification of the shipment must be sent with
this same information.

IV. INVOICES

Invoices must specify the purchase order identification code as well as the
numbers for each individual item. Invoices are not payable so long as this
information is missing. Copies of invoices must be identified as duplicates.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

V. PAYMENTS

(1) Unless otherwise agreed, payments shall be made
within 14 days minus a 3% discount, or within 30 days minus a 2% discount, or
within 90 days net.
(2) The payment period shall begin as soon as the product delivery or service
has been completed and the properly issued invoice has been received. If the
supplier must provide material tests, inspection logs, quality documents, or
other documents, the receipt of these documents shall also be a prerequisite for
the completeness of the product delivery or service. A discount deduction shall
also be permitted if the purchaser offsets or withholds payments in an
appropriate amount due to defects; the payment period shall begin following
complete remedy of the defect or defects.
(3) Payments do not constitute recognition of the products or services as
complying with the Contract.

VI. LIABILITY FOR DEFECTS

(1) The supplier must provide a one-year warranty for his products and services.
The warranty period shall begin with the transfer of risk (Item III, Para. 1).
In the event of product deliveries to locations where the purchaser is
conducting projects outside of his factories or facilities, the warranty period
shall begin with the acceptance by the party for whom the purchaser is
conducting the project or projects. The warranty period shall end no later than
two years following transfer of risk.
(2) If defects are determined before or upon transfer of risk or appear during
the warranty period, then the supplier must bear the costs for either
eliminating the defect or delivering a new non-defective product or service,
based upon the purchaser's choice. This shall also apply to product deliveries
in which inspection is limited to random samples. The purchaser shall make a
decision based upon his own reasonable discretion.
(3) If the supplier fails to remedy the defect or provide a new product delivery
or service within an appropriate time period determined by the purchaser, then
the purchaser shall have the right to withdraw fully or partially from the
Contract without compensation, or to require a reduction of the price, or to
demand that the supplier perform or have performed at his own cost repairs or
new product deliveries, or to demand compensation for nonperformance. This shall
also apply if the supplier declares that he is unable to remedy the defect or to
deliver a new product or service within an appropriate period of time.
(4) Repairs may be performed at supplier's cost without the specification of a
time period if delivery is made following the onset of a delay and the purchaser
has an interest in immediate repair in order to avoid a delay or for other
reasons of urgency.
(5) The rights described above shall expire one year after the defect is
reported.
(6) More extensive legal rights, especially regarding reimbursement of costs for
useless work or processing, shall remain unaffected.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

(7) Complaints regarding defects may be raised within one month of product
delivery or performance of service or, if the defect is noticed only during
work, processing or utilization, with one month from the time that the defect is
detected.
(8) The aforementioned arrangements shall apply similarly for services performed
to remedy defects.
(9) The supplier shall bear the costs and risks for the return of defective
delivered products.

VII. SUBCONTRACTING ORDERS TO THIRD PARTIES

Orders may not be subcontracted to third parties without the written consent of
the purchaser, and such subcontracting shall entitle the purchaser to fully or
partly withdraw from the Contract or to demand compensation for damages.

VIII. MATERIAL PROVIDED BY THE PURCHASER

(1) Material provided by the purchaser shall remain the property of the
purchaser and must be separately stored, marked, and managed at no cost.
Provided material may be used only for the purchaser's orders. The supplier must
compensate the purchaser in the event of depreciation in value or loss. This
shall also apply for the authorized transfer of use of material associated with
the order.
(2) The material shall be processed or transformed for the purchaser. The
purchaser shall become the owner of the new or transformed item. If this is not
possible for legal reasons, then the purchaser and the supplier agree that the
purchaser shall become the owner of the new item at every point in time during
the processing and transformation. The supplier shall store the new item free of
charge for the purchaser, exercising due and proper care.

IX. TOOLS, MOLDS, SAMPLES, SECRECY, ETC.

Tools, molds, samples, models, sections, drawings, standards, printed materials,
and manuals provided by the purchaser, as well as items manufactured based upon
these materials, shall not without the written consent of the purchaser be
passed on to a third party nor used for purposes other than those specified in
the Contract. They shall be safeguarded against unauthorized inspection or use.
The purchaser may demand their return without prejudice to his other rights if
the supplier violates these obligations.

The supplier shall not disclose to third parties any information acquired from
the purchaser unless it is generally known or the supplier has legitimately
acquired knowledge of it in some other way.

X. ASSIGNMENT OF RECEIVABLES

No receivables shall be assigned without the purchaser's written consent.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

XI. ADDITIONAL PROVISIONS

Where points arise that are not covered by these conditions, the statutory
provisions shall apply.

XII. VENUE, APPLICABLE LAW

(1) If the supplier is listed in the Commercial Register, the venue shall be the
place from which the purchase order was issued.
(2) This Contract shall be subject to German law, excluding the United Nations
Convention on Contracts for the International Sale of Goods signed on April
11, 1980.

XIII. INSURANCE POLICIES

The product deliveries shall be insured for transportation by Bruker AXS
Analytical X-Ray Systems GmbH. The supplier must inform the carriers of the
SVS/RVS restrictions. The supplier must bear the costs of any SVS/RVS premiums.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

APPENDIX 3

                                   PRICE LIST

<TABLE>
<CAPTION>
-------------------------------------- ------------------------------------------- ------------------------------
      Purchase Order Number                           Price Basis                           Price / DM
             AXS                                                                        plus applicable VAT
-------------------------------------- ------------------------------------------- ------------------------------
<S>                                    <C>                                         <C>

C79298-A3208-Cxx(*1)                   [**]unit quantities                         [**]
(glued, bent, inspected)
                                                                                   to be negotiated

                                                                                   per agreement
custom designs
(to be specified)
-------------------------------------- ------------------------------------------- ------------------------------
</TABLE>

(*1) = C30,C31, C32, C33, C34, C35 and multi-layer with similar specifications.

Both parties reserve the right to price adjustments to compensate for cost
increases as well as in response to changes in the market price.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

                          ACKNOWLEDGMENT OF TRANSLATION

                                 August 14, 2001

         The undersigned officer of the Registrant hereby acknowledges on behalf
of the Registrant that the foregoing translation of the Supply Agreement between
Bruker AXS GmbH and GKSS Forschungszentrum Geesthacht GmbH is a fair and
accurate English translation from German of the original executed agreement.

                                           BRUKER AXS INC.

                                           By: /s/ Martin Haase
                                              ----------------------------------
                                              Martin Haase, President and Chief
                                              Executive Officer<PAGE>

                                                                    Exhibit 10.6

                                                                Legal Department
                                                                      1075/97 Ks
                                                                   July 31, 1997
                                                                        10800674
                                    CONTRACT

                                     between

                       AXS - Analytical X-Ray Systems GmbH
                                 Siemensallee 85
                                 76181 Karlsruhe
                                     ("AXS")

                                       and

                           Siemens Aktiengesellschaft
                                Berlin and Munich
                           Medical Technology Division
                                Rontgenstrasse 2
                                07407 Rudolstadt
                                   ("Siemens")

                              on order development
                     and subsequent production and delivery

PREAMBLE

Siemens has extensive experience in the development and production of X-ray
emitters for materials analysis.

AXS is interested in having Siemens develop and produce a specific spectrometry
emitter for AXS.

Siemens is prepared to undertake this task.

The parties to the contract therefore agree as follows:

1.       DEFINITIONS

1.1      The term "PRODUCT" refers to the 1,000 W spectrometry emitter described
         in broad terms in APPENDIX 1 of this contract (Performance Standard).

1.2      The term "WORK" refers to the totality of the work done to perform the
         development of the PRODUCT up to the proof of functionality as
         specified in Item 3.2 below.

1.3      "RESULTS" are the patentable and non-patentable results in written
         and/or oral form, including software, that are created during the
         performance of the WORK pursuant to Item 2, particularly the PRODUCT as
         a whole developed for AXS under this contract and the parts contained
         in this product that are created during the performance of the work
         pursuant to Item 3. Technical knowledge possessed by Siemens at the
         start of this contract or created at Siemens during this contract but
         independent of it ("background knowledge") is naturally not included in
         the term "RESULTS."

2.       AWARDING OF CONTRACT

         AXS hereby awards Siemens the contract and Siemens undertakes to
         develop the PRODUCT for

CONFIDENTIAL TREATMENT HAS BEEN REQUESTED AS TO CERTAIN PORTIONS OF THIS
EXHIBIT, WHICH PORTIONS HAVE BEEN OMITTED AND REPLACED WITH [**] AND FILED
SEPARATELY WITH THE COMMISSION.

<PAGE>

         AXS according to the provisions of this contract and to produce it and
         deliver it to AXS, subject to the successful completion of the WORK as
         provided in Item 8.

3.       PERFORMANCE OF WORK

3.1      Based upon the performance standard, Siemens shall produce a total of
         four (4) prototypes of the PRODUCT and deliver them to AXS by the end
         of the seventh (7th) month after the start of the contract.

         Siemens shall promptly transmit test reports on the function test and
         technical data to AXS.

3.2
3.2.1    Within four (4) weeks after receipt, AXS shall inspect these prototypes
         for conformity with the specifications (Appendix 1) and shall inform
         Siemens in writing of the inspection results.

3.2.2    If the prototypes meet the specifications pursuant to Appendix 1, AXS
         shall transmit a release report to Siemens within two (2) weeks after
         completion of the inspection. If AXS does not comment within the period
         specified in Item 3.2.1, the prototypes shall be deemed to have no
         defects.

3.2.3    If the prototypes do not meet the specification, Siemens shall
         eliminate such defects after receiving the test report and shall
         deliver to AXS a corresponding number of prototypes that have been
         corrected accordingly. This shall take place no later than two (2)
         months after the prototypes have been rejected. Siemens shall correct
         the defects free of charge, unless the defects are due to a
         specification that contains defects.

3.3      Upon transmission of the release report, the WORK shall be successfully
         completed.

3.4      General rules that apply to the performance of the WORK:

3.4.1    Siemens shall maintain close contact with AXS during the performance of
         the WORK. AXS must be notified immediately of any problems that arise
         which may cause deviations from the schedule or other stipulations, so
         that the parties can work together to find a suitable solution for the
         issues that have arisen.

3.4.2    Siemens shall strive as it customarily does in its own interests within
         the company to achieve the best possible results in performing the
         WORK.

3.5      If Siemens wishes to award subcontracts for the performance of the
         WORK,

         -    Siemens shall bear full responsibility, including financial
              responsibility, for the subcontracted work;

         -    Siemens shall incorporate the results of the subcontracted work
              into the RESULTS and ensure that they are available to AXS in the
              manner of Siemens' own work as provided in the present contract
              and shall further ensure that the subcontractor must release the
              results to Siemens in their entirety and is not permitted to use
              them for other purposes;

         -    Before Siemens makes available to the subcontractor information
              that it may have obtained from AXS, Siemens shall pledge the
              subcontractor to confidential handling pursuant to Item 6 and
              shall require that the information be used only for the purposes
              of the awarded subcontract.

3.6      Siemens shall strive to implement expansions of or changes to the
         PRODUCT that are requested by AXS even during serial production,
         provided that the partners have reached a suitable agreement on the
         effects of such expansions and/or changes on the PRODUCT, deadlines,

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

         development costs, and product prices.

4.       DEVELOPMENT COSTS

         AXS shall contribute DEM 200,000.00 (two hundred thousand Deutsche
         marks) plus currently applicable VAT to the development costs incurred
         by Siemens in connection with the WORK. Payment shall be made according
         to the payment schedule in APPENDIX 2, specifically within two (2)
         weeks after receipt of the corresponding invoice in each case, to the
         Siemens bank account designated therein.

         Payment of the above amount simultaneously covers delivery of the four
         (4) prototypes.

5.       RIGHTS TO RESULTS

5.1      When created, the RESULTS shall become the property of Siemens. If the
         RESULTS contain patentable inventions, also including patentable ideas,
         Siemens shall, at its discretion, apply for or pursue patents in its
         name in any countries of its choice.

         Siemens shall inform AXS in an appropriate manner regarding any such
         patent applications it intends to file and the countries in which the
         applications are to be filed. AXS shall have the right to comment and
         to make suggestions.

5.2      If Siemens does not apply for a patent on an invention contained in the
         RESULTS or does not apply for a patent on the invention in a given
         country, or if it does not desire to maintain a patent granted to it on
         the basis of such an application, it shall offer AXS, in a timely
         manner, the opportunity to take over the patent or the patent
         application. The costs associated with the takeover shall be the
         responsibility of AXS. In exchange for suitable remuneration, Siemens
         shall be entitled to rights of joint use of any such patents/patent
         applications taken over by AXS.

5.3      If the RESULTS are protected by proprietary rights, Siemens shall have
         the exclusive, geographically and temporally unlimited right,
         transferable by Siemens alone, to use the RESULTS in an altered or
         unaltered form for all types of use, and to grant rights to third
         parties for all types of use at its discretion. The types of use shall
         include, in particular, rights to reproduce, distribute, and display,
         and to present, exhibit, demonstrate, and broadcast, in addition to the
         rights to transmission by means of video, audio, and data recording
         media and the transmission of film and radio transmissions.

6.       CONFIDENTIALITY

6.1      Siemens shall use the information and documents provided by AXS,
         including those received by Siemens prior to the signing of this
         contract, only for the purposes of this contract, and shall treat this
         information and these documents as confidential, as it would treat its
         own documents and information that are subject to confidentiality.
         Siemens shall have fulfilled its duty of confidentiality if it has
         taken this due care.

         For its part, AXS shall treat information and documents provided by
         Siemens, including those received by AXS prior to the signing of this
         contract, and the RESULTS with the same confidentiality.

6.2      The obligations contained in Item 6.1 shall remain in effect even after
         termination of the contract. They shall not apply to information and
         documents that have become incorporated into the prior art accessible
         to the public through no fault of the recipient, nor to those which the
         recipient demonstrates were already part of the recipient's internal
         prior art when obtained from the other party or became part of the
         internal prior art subsequently with no connection to the present
         contract.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.
<PAGE>

         If a party wishes to make public reference to the cooperative venture,
         it must coordinate this in advance with the other party.

7.       FORCE MAJEURE

         The parties shall be released from all responsibilities for
         non-fulfillment of their obligations under this contract in the event
         of and for the duration of an act of a force majeure.

         A "an act of force majeure" shall be any event that occurs independent
         of the will of a party and prevents the party irremediably from
         fulfilling one or more obligations under the contract (examples: war,
         unrest, natural or transportation disasters). Strikes and their effects
         are deemed equivalent to an act of force majeure if they do not pertain
         exclusively to the company.

         If a disparity arises concerning the performances to be made by both
         sides under this contract due to one party's being prevented from
         fulfilling this contract due to an act of force majeure, the parties
         shall attempt to reach agreement on a suitable settlement. If they are
         unable to reach agreement within a reasonable period of time (no more
         than six (6) months after the invitation), then the party that is not
         prevented from fulfilling its obligations by an act of force majeure
         shall have the right to early termination of this contract by means of
         a registered letter at any time prior to the elimination of the
         obstacle and the disparity.

8.       PRODUCTION AND DELIVERY

8.1      Following successful completion of the WORK pursuant to Item 3.3

         -    Siemens shall supply AXS with PRODUCTS in accordance with the
              delivery orders issued to Siemens by AXS as provided in the
              present Item 8 and

         -    AXS shall purchase PRODUCTS from Siemens as provided in the
              present Item 8.

         In regard to this Item 8, Siemens' exclusive partner on the AXS side
shall be the AXS Purchasing Department.

8.2      The unit price per PRODUCT shall be DEM [**] plus VAT as required by
         law.

         Prices may be modified as necessary due to changes in costs. However,
         prices may not be increased prior to December 31, 1999. The percentage
         increase in these prices must not exceed the percentage increase in the
         prices of comparable Siemens products.

         The prices are understood to be ex works, exclusive of shipping,
         packaging, and insurance.

         For orders, the prices valid on the date of the order shall apply.

8.3      Delivery quantities and times

         Details on delivery times and delivery or order quantities are
         established annually in individual orders, separately in each case.

         AXS shall inform Siemens no later than July 1, 1998 of its expected
         need for PRODUCTS for the calendar year 1999. Subsequently, for
         purposes of advance planning and to ensure short delivery times, AXS
         shall inform Siemens of its expected need for additional deliveries
         pursuant to Item 8.1 for the next six (6) months at the beginning of
         each calendar quarter. These notifications are not binding.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

8.4      Warranty

         In the event of defects in the PRODUCTS delivered by Siemens in
         accordance with Item 8.1, Siemens' conclusive liability shall consist
         of replacing or repairing, free of charge, all of the defective
         PRODUCTS or their parts of which it is notified within the warranty
         period.

         Shipping/packaging costs, including any incidental costs such as
         import/export duties, shall be the responsibility of Siemens in
         warranty cases. The warranty period shall be twelve (12) months from
         delivery to the customer, although not more than eighteen months from
         the date when the shipment leaves the Siemens production facility.

         Siemens shall number the PRODUCTS sequentially.

8.5      Delivery of spare parts

         AXS shall project its need for spare parts for PRODUCTS on an annual
         basis and in advance. Siemens shall supply AXS with spare parts for
         PRODUCTS even after the termination of this contract. This obligation
         shall end at the conclusion of seven (7) years after the last delivery
         of series PRODUCTS to AXS. Siemens shall offer AXS a final supply in a
         timely manner prior to the end of this seven (7) year period.

8.5.2    Spare parts covered by this contract may also include the delivery of
         parts that can be installed in the PRODUCTS supplied pursuant to Item
         8.1 without the need for modifications of their form according to the
         specifications.

8.6      Technical modifications

         Where necessary or expedient and in consultation with AXS, Siemens
         shall make technical modifications to the objects it delivers pursuant
         to Item 8.1. If Siemens intends to make such modifications, AXS must be
         informed in a timely manner if these modifications will affect
         installation, operation, maintenance, and/or repair. In the event of
         modifications requested by AXS, AXS shall be responsible for any
         resulting costs.

         Changes in costs resulting from technical modifications shall be taken
         into account in an appropriate manner in the prices pursuant to Item
         8.2.

8.6      Service

         In principle, AXS itself shall be responsible for service to its
         customers. In the event that service is required, if there are
         difficulties with the PRODUCTS supplied pursuant to Item 8.1 that AXS
         cannot resolve with its own personnel, Siemens shall be prepared to
         provide specialized personnel under the conditions and at the rates
         that are in effect at the time, upon request and to the best of its
         ability.

8.8      Other delivery conditions

         Unless otherwise expressly agreed upon in the above provisions,
         deliveries of PRODUCTS are subject to the current "General Delivery
         Conditions for Products and Services in the Electronics Industry"
         ("green delivery conditions").

8.9      The present contract shall not limit Siemens in its activities in the
         spectrometry emitter field. If, however, during the first three (3)
         years after successful completion of the WORK, AXS has ordered the
         following minimum unit quantities of PRODUCTS for delivery in the year
         in question:

         -        First year, 20 (twenty) units
         -        Second year, 40 (forty) units
         -        Third year, 55 (fifty-five) units,

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

         then Siemens shall deliver PRODUCTS to third parties (affiliated
         companies--meaning companies in which Siemens holds a 50% interest in
         terms of voting rights or capital, as long as this interest is
         held--are not third parties in the meaning of Item 8.9) only with the
         express prior consent of AXS; AXS shall not unfairly withhold its
         consent, but can cause it to be dependent upon the payment of an
         appropriate share of the profit, to be established on a case-by-case
         basis. The total payments to be made by Siemens under this provision
         shall be limited to DEM 200,000.00 (two hundred thousand Deutsche
         marks) plus currently applicable VAT.

         Billing and payment of the fees shall occur at the end of every second
         (2nd) month following the end of each year after successful completion
         of the WORK.

         Siemens shall maintain proper financial records on all transactions
         subject to these fees. AXS shall have the right to have the relevant
         Siemens documents audited for accuracy by a sworn auditor acceptable to
         Siemens (e.g. KPMG). If an audit discloses errors to the detriment of
         AXS equal to 5% (five percent) of the amount of the last statement to
         AXS, Siemens shall be responsible for the costs of the audit;
         otherwise, AXS shall bear the costs.

8.10     If after the introduction of the euro in Germany, the Deutsche mark is
         still used as a subordinate unit of currency to the euro, accounting
         and payments between the parties shall be made exclusively in euros as
         of the October 1 subsequent to the introduction of the euro. The
         official exchange rate shall be binding for this purpose. The
         introduction of the euro shall have no effect on the validity of this
         contract.

9.       TERM OF THE CONTRACT

9.1      This contract shall take effect upon being signed by both parties.

9.2      The contract shall be valid until November 30, 2001. Orders submitted
         up to that date shall remain unaffected by the expiration of the
         contract.

9.3      Each party shall have the right to terminate the contract without prior
         notice by means of a registered letter at any time,

9.3.1    if the other party has committed a culpable breach of the provisions of
         this contract and has not eliminated this breach and, as far as
         possible, its consequences within 30 (thirty) days after a written
         warning, and the parties have not agreed upon other arrangements within
         the stated period of 30 (thirty) days;

9.3.2    if an application for the initiation of composition or bankruptcy
         proceedings or similar proceedings has been filed concerning the assets
         of the other party;

9.3.3    if the party of the second part comes under the controlling influence
         of a third party, technically or commercially, and the party of the
         first part believes that this is detrimental to its interests. Each
         party shall notify the other party in writing immediately if a third
         party acquires such a controlling influence.

9.4      The provisions of Nos. 5 and 6 shall remain unaffected by the
         termination of the contract, irrespective of the reason for the
         termination.

10.      LIABILITY

         Siemens shall bear unlimited liability for damages to persons for which
         it is responsible; in the event of property damage for which it is
         responsible, it shall reimburse expenses for the restoration of the
         property, up to a maximum of DEM 1,000,000.00 per instance of damage.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

         Warranty claims and claims for damages by AXS other than those
         expressly contained in this contract shall be precluded, irrespective
         of the legal basis, particularly claims for damages due to interruption
         of operations, lost profit, and loss of information and data, unless
         liability is required due to willful misconduct, gross negligence, or
         the absence of warranted characteristics.

11.      OTHER PROVISIONS

11.1     There are no ancillary agreements.

11.2     Any changes or additions to this contract must be made in writing. Any
         waiver of this requirement of written form must be made in writing.

11.3     If a provision of this contract is or becomes invalid, the remaining
         content of the contract shall be unaffected thereby.

         The parties shall attempt to replace the invalid provision with a valid
         provision that approaches as nearly as possible the commercial effect
         of the invalid provision.

12.      ARBITRATION

         Unless otherwise provided in the applicable delivery conditions, the
         following arbitration clause shall apply to the present contract:

         Final resolution of all disputes arising in connection with this
         contract or concerning its validity shall be reached in accordance with
         the Arbitration Tribunal Code of the German Arbitration Institute
         (DEUTSCHE INSTITUTION FUR SCHIEDSGERICHTSBARKEIT e. V., DIS) in Bonn,
         without the possibility of recourse to legal action. The arbitration
         tribunal may also issue a binding ruling on the validity of this
         arbitration agreement.

         The arbitrators must apply material German law.

Karlsruhe                                            Rudolstadt 14, 1997
AXS - Analytical X-ray Systems GmbH                  Siemens Aktiengesellschaft

[signature]                                          [signature]

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

                                                                     APPENDIX 1

Performance Standard               Version 2                        Page 1 of 3

TOPIC: 1 KW END-WINDOW X-RAY EMITTER WITH SELF-CONTAINED COOLING CIRCUIT

Release:     July 28, 1997              Rainer Golenhofen          [signature]
             Date                       Name (Created by)          Signature

Note: When a new version is released, it does not incorporate this performance
standard!

1.       DESCRIPTION

         End-window x-ray emitter with a high-voltage anode and self-contained
         cooling system.

2.       SPECIFICATION OF ELECTRICAL DATA

         Tube load (with DC voltage)                    [**]

         Tube voltage                                   [**]

         Tube current                                   [**]

         Cathode                                        [**]

         Emissions characteristic of                    [**]

         Damping resistance (at 20 kHz)                 [**]

         [**]

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

Performance Standard Version 2 dated July 28, 1997, page 2 of 3
Topic: 1 kW end-window x-ray emitter with self-contained cooling circuit

3.       SPECIFICATION OF ANALYTICAL DATA

         Anode material                                 [**]

         Ring burner area (exterior diameter)           [**]

         Spectral contamination                         [**]

         Max. loss of intensity (Rh L)                  [**]

         Guaranteed useful life                         [**]

         Radiation output window                        [**]

         Load fluctuation (vacuum/1.1 bar)              [**]

         Temperature load window                        [**]

4.       EMITTER DIMENSIONS

         Tube head similar to drawing (attached),
         therefore

         Anode sample distance in SRS MIDI              [**]

         Length and diameter                            [**]

         Final dimensions                               To be determined by the
                                                        end of 8/97

5.       RADIATION LEAKAGE

         Dose output (emitter head shielded with lead)  [**]

         Unit inspection of emitters

(1) Can be enlarged if the load window is increased accordingly.

(2) If other materials are used, the measurement must be extended for these
    materials.

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

Performance Standard Version 2 dated July 28, 1997, page 3 of 3 Topic: 1 kW
end-window x-ray emitter with self-contained cooling circuit

6.       COOLING SYSTEM

         Self-contained cooling system with heat exchanger for ambient air

         Dimensions                                     To be determined by
                                                        end of 8/97

         Cooling fluid                                  [**]

         Useful life of deionization cartridges         [**]

         Permissible ambient air temperature            [**]

         Max. power usage                               [**]

         Sensors                                        [**]

         Interface                                      To be determined by
                                                        end of 8/97

7.       TRANSPORTATION AND STORAGE

         Permissible air pressure                       [**]

         Permissible humidity                           [**]

         Permissible temperature range                  [**]

         Permissible temperature gradient               [**]

         Permissible storage period                     [**]

8.       OPERATING CONDITIONS

        [**]

Attachment: Drawing of tube head

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

[see diagram]                         [**]

Attachment to Performance Standard dated July 28, 1997, Version 2
Topic: 1 kW end-window x-ray emitter with self-contained cooling circuit

<PAGE>

APPENDIX 2

PAYMENT SCHEDULE:

Milestones:                       Planned deadline:                   AXS pays:

Feasibility study                 August 1, 1997                      [**]

Design specification drawn up     November 1, 1997                    [**]

Delivery of 4 prototypes          March 1, 1998                       [**]

Start of delivery                 October 15, 1998                    [**]

[**] Indicates that information has been omitted and filed separately with the
Commission pursuant to a request for confidential treatment.

<PAGE>

                          ACKNOWLEDGMENT OF TRANSLATION

                                 August 14, 2001

         The undersigned officer of the Registrant hereby acknowledges on behalf
of the Registrant that the foregoing translation of the Development Agreement
between Bruker AXS GmbH and Siemens Aktiengesellschaft Berlin und Munchen
Bereich Medizinische Technik is a fair and accurate English translation from
German of the original executed agreement.

                                           BRUKER AXS INC.

                                           By: /s/ Martin Haase
                                              ----------------------------------
                                              Martin Haase, President and Chief
                                              Executive Officer

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