Document:

<PAGE>   1
                                                                   EXHIBIT 10.21

                              MKS INSTRUMENTS, INC.

                                SEVENTH AMENDMENT

                                TO LOAN AGREEMENT

     This Seventh Amendment (the "Amendment") dated as of January 1, 2001
concerns the Loan Agreement dated as of October 31, 1995 (the "Loan Agreement"),
between MKS Instruments, Inc. (the "Borrower") and Fleet National Bank (f/k/a
BankBoston, N.A. and The First National Bank of Boston, the "Lender"), as
amended on February 23, 1996, February 4, 1997, February 3, 1998, January 28,
1999, January 1, 2000 and September 1, 2000. Capitalized terms used herein but
not otherwise defined shall have the meanings assigned to them in the Loan
Agreement.

     WHEREAS, the Loan Agreement was previously amended to provide for covenants
consistent with those set forth in the First Amended and Restated Loan Agreement
among the Borrower, the Lender and The Chase Manhattan Bank (as amended, the
"2000 Loan Agreement"), which is now being further amended; and

     WHEREAS, the Lender and the Borrower are willing to amend the Loan
Agreement to make its covenants consistent with the covenants in the 2000 Loan
Agreement;

     NOW, THEREFORE, the Lender and the Borrower agree as follows:

     Section 1. AMENDMENT OF THE LOAN AGREEMENT. Section 7.1(b) of the Loan
Agreement is hereby amended and restated as follows:

          (b) MERGERS, ETC. Neither the Borrower nor any Subsidiary will
     consolidate with or merge into any other Person or permit any other Person
     to consolidate with or merge into it, or acquire all or substantially all
     of the capital stock or assets of any Person, or sell, assign, lease or
     otherwise dispose of (whether in one transaction or in a series of
     transactions) all or substantially all of its assets to any Person, except
     that

               (1) a Subsidiary may consolidate with or merge into the Borrower
          or another Subsidiary; and

               (2) the Borrower or any of its Subsidiaries may acquire all or
          substantially all of the capital stock or assets of any Person or
          consolidate or merge with any Person provided (i) such Person is
          engaged in a line of business substantially similar to one or more
          of Borrower's existing lines of business, (ii) the aggregate purchase
          price liability incurred in any calendar year, including all
          contingent liabilities, when aggregated with all such acquisitions and
          any Investments permitted under Section 7.4(2) in any calendar year
          shall not exceed 25% of Consolidated Tangible Net Worth as of the end
          of the most recent fiscal quarter or, if 80% or more of

<PAGE>   2

          the purchase price is paid in capital stock of the Borrower, 50% of
          Consolidated Tangible Net Worth as of the end of the most recent
          fiscal quarter and (iii) based on a pro forma calculation of the
          ratios set forth in Section 7.7 as of the date such acquisition is
          closed, assuming consolidation of the acquired business with the
          Borrower for the four full fiscal quarters ended immediately preceding
          such closing and pro forma debt and debt service payments based on
          scheduled principal payments, including acquisition borrowings, if
          any, and pro forma interest on total debt at then prevailing borrowing
          rates, Borrower is in compliance with the financial covenants set
          forth in Section 7.7.

     Section 2. REPRESENTATIONS AND WARRANTIES. The Borrower hereby represents
and warrants as follows:

          (a) The execution and delivery of this Amendment and the performance
of this Amendment, the Loan Agreement as amended hereby and each of the other
Loan Documents, and the transactions contemplated hereby and thereby, have been
authorized by all necessary corporate actions of the Borrower. This Amendment,
the Loan Agreement as amended hereby and each of the other Loan Documents
constitute the legal, valid and binding obligations of the Borrower, enforceable
against the Borrower in accordance with their respective terms.

          (b) The Borrower has all requisite corporate power and authority to
execute, deliver and perform its obligations under this Amendment, the Loan
Agreement as amended hereby and each of the other Loan Documents. Neither the
authorization, execution, delivery or performance by the Borrower of this
Amendment nor the performance of the Loan Agreement as amended hereby or any
other Loan Document nor the performance of the transactions contemplated hereby
or thereby violates or will violate any provision of the corporate charter or
by-laws of the Borrower, or does or will, with the passage of time or the giving
of notice or both, result in a breach of or a default under, or require any
consent under or result in the creation of any lien, charge or encumbrance upon
any property or assets of the Borrower pursuant to, any material instrument,
agreement or other document to which the Borrower is a party or by which the
Borrower or any of its properties may be bound or affected.

          (c) The execution and delivery by the Borrower of this Amendment and
the performance by the Borrower of the Loan Agreement as amended hereby and the
Loan Documents do not and will not violate any provision of law or regulation
applicable to the Borrower, or any writ, order or decree of any court or
governmental or regulatory authority or agency applicable to the Borrower.

     Section 3. LOAN DOCUMENTS. This Amendment shall be a Loan Document for all
purposes.

     Section 4. CONDITIONS TO EFFECTIVENESS. The effectiveness of this Amendment
is conditioned on the following:

                                     - 2 -

<PAGE>   3

          (a) The Borrower and the Lender shall each have executed and delivered
a counterpart of this Amendment;

          (b) The representations and warranties contained in Article IV of the
Loan Agreement shall be true and correct in all material respects as of the date
hereof as though made on and as of the date hereof;

          (c) No Default or Event of Default under the Loan Agreement shall have
occurred and be continuing;

          (d) The conditions set forth in Sections 5.2-5.5 of the Loan Agreement
shall have been met as of the date hereof, provided that for purposes thereof
and Section 4.5 of the Loan Agreement, the "Balance Sheet Date" shall mean
September 30, 2000 and the financial statements referred to therein shall mean
the unaudited statements for the period ended September 30, 2000, that have been
furnished to the Lender.

     Section 5. MISCELLANEOUS.

          (a) On and after the date hereof, each reference in the Loan Agreement
to "this Agreement" or words of like import shall mean and be deemed to be a
reference to the Loan Agreement as amended hereby.

          (b) Except as amended and modified hereby, the Loan Agreement is in
all respects ratified and confirmed as of the date hereof, and the terms,
covenants and agreements therein shall remain in full force and effect.

          (c) This Amendment and the modifications to the Loan Agreement set
forth herein shall be deemed to be a document executed under seal and shall be
governed by and construed in accordance with the laws of The Commonwealth of
Massachusetts.

          (d) This Amendment may be executed in counterparts, each of which
shall be deemed an original, but all of which together shall constitute one and
the same document.

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

                                MKS INSTRUMENTS, INC.

                                By: /s/ William P. Donlan
                                   -----------------------------
                                Title: Treasurer
                                       -------------------------

                                FLEET NATIONAL BANK

                                By: /s/ Daniel G. Head, Jr.
                                   -----------------------------
                                Title: Director
                                      --------------------------

                                     - 3 -<PAGE>   1
                                                                   EXHIBIT 10.25

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                              AMENDED AND RESTATED
                        COMPREHENSIVE SUPPLIER AGREEMENT

This Agreement dated March 13, 2001 is by and between Applied Materials, Inc.,
("Applied"), a Delaware corporation, having its place of business in Santa
Clara, California and Austin, Texas and MKS Instruments, (MKS), a Massachusetts
corporation, having its place of business in Andover, Massachusetts.

The parties agree as follows:

Definitions

The following capitalized terms will have the following meanings:

A.       "Applied" means Applied Materials, Inc., including all of its domestic
and international divisions and subsidiaries.

B.       MKS means MKS Instruments, including all of its divisions and
subsidiaries (except HPS).

C        "Item" or "items" means the good(s) or service(s) that MKS is to
provide to Applied wider this Agreement, including all Applied Materials
purchase orders and related agreements that are governed by this CSA, as
specified from time to time by Applied and set forth in Attachment 1 and any
amendments to Attachment 1.

D.       "Applied's Standard Terms and Conditions of Purchase" means the terms
and conditions contained in Exhibit 1 to this Agreement.

E.       "Additional Provisions" means all requirements contained in this
Comprehensive Supplier Agreement.

F.       "Agreement" means this Comprehensive Supplier Agreement and/or the
Applied's Purchase Order, and other Exhibits or Attachments to the Comprehensive
Supplier Agreement and/or Purchase Order together with any Nondisclosure
Agreement defined below as "NDA".

G.       "Comprehensive Supplier Agreement" means the Comprehensive Supplier
Agreement No.982812, including Exhibit 1, the Applied Terms and Conditions of
Purchase.

H.       "NDA" means any and all Nondisclosure Agreement(s) between Applied and
MKS and any specific Nondisclosure Agreement that may be attached to this
Agreement.

I.       "Will" or "shall" have the same meaning and are used to convey an
affirmative duty or obligation (i.e., a requirement).

J.       "Release," or "release" means individual purchase orders, spot buys,
pick cards or other orders for items issued by Applied to MKS under this
Agreement

K.       "Proprietary Information" means the Proprietary Information, as that
term is defined by the NDA, of Applied.

L.       "Confidential Information" means the Confidential Information, as that
term is defined by the NDA, of Applied.

<PAGE>   2

1.       SCOPE

1.1      INTENTION/DESCRIPTION OF COMPREHENSIVE SUPPLIER AGREEMENT PRINCIPLES

         This Comprehensive Supplier Agreement ("CSA") serves as a tool to
         manage the items Applied purchases from MKS as well as sub-assemblies
         MKS processes for Applied. Attachment 1 lists the items covered by this
         Agreement. Any modifications to this document will include a current
         list of the items covered by this CSA.

         This Agreement defines the relationship and requirements between
         Applied and MKS to ensure a consistent supply of material that meets
         Applied's specifications. Decisions regarding future purchases from MKS
         will be based upon MKS' performance under this CSA as stated in Section
         6, and their achievement toward Applied's business objectives, e.g.
         Hoshin goals.

1.2      MKS DETAILS

         MKS Instruments        Account Manager: John Kranik
         Six Shattuck Road      Sales Manager: Jeff Peters:
         Andover. MA 01810      Customer Service Representative: Barbara Guthrie
         Phone: (978)975-2350   Engineering Manager: Joe Maher
         Fax: (978)975-0093

1.3      ENTIRE AGREEMENT

         This CSA, including the Applied Standard Terms and Conditions of
         Purchase (Exhibit 1) and any other Exhibits or Attachments which are
         incorporated by reference into this CSA, together with any NDA sets
         forth the entire understanding and agreement of the parties as to the
         subject matter of this CSA and supersedes all prior agreements,
         understandings, negotiations and discussions between the parties as to
         the subject matter. No amendment to or modification of this CSA will be
         binding unless in writing and signed by a duly authorized
         representative of both parties. In the event of any conflict between
         the terms of the CSA and the terms of the Exhibits and Attachments, the
         order of precedence shall be given first to the CSA, followed by the
         Applied Standard Terms and Conditions of Purchase, drawings,
         specifications or other technical documents.

         The following lists all of the Exhibits and Attachments referenced in
         this agreement:
<TABLE>
<CAPTION>
--------------------------------------------------------------------------------
Exhibit/Attachment                 Revision                    Release Date
--------------------------------------------------------------------------------
   <S>                            <C>                      <C>
   Exhibit 1                      no revision                    10/23/98
--------------------------------------------------------------------------------
   Attachment 1                             A                    10/23/98
--------------------------------------------------------------------------------
   Attachment 2                   no revision                    10/15/97
--------------------------------------------------------------------------------
   Attachment 3                   no revision
--------------------------------------------------------------------------------
   Attachment 4                   no revision                    any example -
                                                             will be in contract
--------------------------------------------------------------------------------
</TABLE>

                                       -2-

<PAGE>   3

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------
Exhibit/Attachment                 Revision                    Release Date
--------------------------------------------------------------------------------
   <S>                            <C>                           <C>
   Attachment 5                             A                    4/27/98
--------------------------------------------------------------------------------
   Attachment 6                             K                    6/15/98
--------------------------------------------------------------------------------
   Attachment 7                   no revision
--------------------------------------------------------------------------------
   Attachment 8                           n/a
--------------------------------------------------------------------------------
   Attachment 9                           n/a
--------------------------------------------------------------------------------
   Attachment 10                  no revision
--------------------------------------------------------------------------------
   Attachment 11                  no revision
--------------------------------------------------------------------------------
   Attachment 12                  no revision
--------------------------------------------------------------------------------
   Attachment 13                  no revision
--------------------------------------------------------------------------------
   Attachment 14                          n/a
--------------------------------------------------------------------------------
   Attachment 15                          n/a
--------------------------------------------------------------------------------
   Attachment 16                  no revision
--------------------------------------------------------------------------------
   Attachment 17                  no revision                    8/27/98
--------------------------------------------------------------------------------
</TABLE>

1.4      ITEMS COVERED

         In general, all Items supplied to Applied by MKS will be covered by
         this agreement. The list of Items covered by this CSA is shown in
         Attachment 1. New Items may be added to Attachment 1 upon mutual
         agreement between Applied and MKS. Items may be removed by Applied from
         Attachment 1 from time to time in accordance with this Agreement. MKS
         may recommend or Applied may implement removal for the following
         reasons without limitations:

         a.       Specification changes that MKS is unable to comply with
         b.       Quality or delivery default
         c.       Obsolete Items
         d.       Outsourcing of the parent assembly

1.5      DURATION OF AGREEMENT

         This Agreement commences on and as of the date of the latter of the two
         signatures shown in Section 9, Effective Date, when each party has
         executed and delivered one or more counterparts of this CSA to the
         other (the "Effective Date") and will remain in effect through April
         30, 2001 (the "Initial Term"). Provided that MKS has complied with all
         contract requirements and

                                       -3-

<PAGE>   4

         specifically those requirements identified in section 6.0 (Performance
         Management), both parties may mutually agree to expand the term of the
         agreement up to 24 months from the conclusion of the initial term. Any
         extension of this agreement will be subject to all terms and conditions
         of this agreement.

1.6      RESPONSIBILITIES

         1.6.1    Applied Responsibilities

         Applied agrees to:

         -        Provide demand signals to MKS as defined in section 2.5.1;
         -        Provide updated twenty-six week rolling forecasts to MKS;
         -        Measure inventory levels and scoring compliance to
                  days-of-supply metric as stated in Section 6;
         -        Receive and inspect Items from MKS and measuring quality for
                  quality metric as stated in Section 6;
         -        Notify MKS of any discrepancies;
         -        Provide suggestions on how MKS can improve its operation of
                  this agreement;
         -        Make recommendations as to how MKS might reduce costs and
                  improve the quality of Items purchased from MKS;
         -        Respond to any of MKS' inquiries;
         -        Identity, in conjunction with MKS, possible solutions to
                  resolve any exceptions that might arise;
         -        Write and record action plans to resolve exceptions;
         -        Provide MKS with MKS performance reports;
         -        Meet with MKS quarterly to review its performance;

         1.6.2    MKS Responsibilities

         MKS agrees to fully perform all requirements of this Agreement MKS
         obligations include but are not limited to:

         -        Produce high quality and high reliability Items;
         -        Deliver Items on time to Applied;
         -        Respond in a timely manner to any of Applied's inquiries and
                  requests;
         -        Continuously improve MKS' operations to better serve Applied's
                  needs and support Applied's business objectives, e.g. Hoshin
                  goals;
         -        Work with Applied to improve operation of this agreement;
         -        Work with Applied to reduce costs and improve the quality for
                  all Items MKS produces for Applied;
         -        Review regularly the updated forecasts to adjust MKS operation
                  for changes in Applied's plans;
         -        Work with Applied to resolve any exceptions that may arise;
         -        Complete any tasks assigned to resolve exceptions on time;
         -        Meet with Applied quarterly to review performance;
         -        Monitor and report to Applied the finished goods inventory
                  levels of the Items listed in Attachment 1 of this Agreement.

2.       LOGISTICS FRAMEWORK

2.1      OPERATION OF CSA

                                       -4-

<PAGE>   5

         2.1.1    Operating calendar & holidays

         This CSA operates by Applied fiscal year calendar, shown in Attachment
         2. Recognized holidays are those holidays shown on Applied fiscal year
         calendar. Should any discrepancies between the operating calendars of
         Applied and MKS arise, MKS must make provisions so that Applied's
         operations are unaffected.

         2.1.2    Flowchart of day to day operations (Reserved)

         2.1.3    Forecasts

         MKS' production of Items will be guided by Applied's most current 26
         week rolling forecast, as provided by Applied to MKS on a weekly basis
         ("Applied's Forecast"). MKS will plan, manufacture, and stock inventory
         to meet Applied's forecast. MKS will keep each of Applied's forecasts
         for audit purposes for a minimum of six (6) months and may be asked to
         present this document for verification of authorized inventory levels.
         Applied's forecast is Proprietary Information to be used only by MKS to
         meet its obligations to Applied under this Agreement.

         2.1.4    Releases

         Applied may require a part or Items on an accelerated basis, either in
         addition to or in place of Items forecast for release or scheduled for
         delivery at a later date. If feasible, as determined by Applied and
         MKS, such Items will be provided by MKS to meet Applied's requirements.
         Unless otherwise agreed to by Applied, such accelerated deliveries will
         not affect the delivery schedule of any Items currently allocated for
         forecast requirements. Lead times for each accelerated release will be
         agreed upon by both parties. If MKS and Applied are unable to agree on
         delivery schedule or other terms affecting Items for accelerated
         delivery, Applied shall have the right to purchase or procure affected
         Items from other persons, without obligation to MKS.

         2.1.5    Delivery Guidelines

                  2.1.5.1  General Delivery

                  MKS will exercise all efforts to meet Applied's delivery
                  requirements on time. Shipments to Applied by MKS will be
                  delivered in the right quantities ordered by Applied.

                  For part orders issued via a separate purchase order form
                  ("Spot Buy"), deliveries will be accepted on the requested
                  date or up to 2 days before the requested date. For Spot Buy
                  purchases for spares, deliveries will be accepted on the
                  requested date or up to two days before the requested date.

         2.1.6    Replenishment Approach

         MKS will be expected to supply Items using one or more of the following
         replenishment approaches:

         -        Bus Route

         -        Spot Buy

         The replenishment methodology to be used for a particular Items are
         defined on Attachment 1. Specific delivery mechanics are outlined on
         Attachment 3.

                                       -5-

<PAGE>   6

         2.1.7    Electronic Commerce

         MKS is required to communicate with Applied using EDI ANSI X.l2
         standards and encouraged to use either GElS or EDICT software.

         2.1.8    Changes to Logistics

         Applied may on occasion change any aspect of any logistics requirement.
         Applied will expect MKS to accommodate these changes to the best of its
         ability. MKS will be given at least three weeks notification prior to
         the change being implemented. Applied will then consider all claims for
         pricing adjustment due to the change in the logistics framework if made
         within the three week notification period.

2.2      SERVICE LEVELS

         2.2.1    Inventory Levels

         MKS, if involved in supporting lean manufacturing, is expected to have
         Finished Goods Inventory ("FGI") of the Items on Attachment 1 in order
         to manage demand fluctuations. MKS will maintain a minimum FGI of 4
         weeks and a maximum of 6 weeks of each Item, for each Item identified
         in Attachment 1 as requiring FGI, to meet Applied's needs based on the
         most recent rolling forecast (see Attachment 4 for example of
         forecast). After MKS exhibits ability to decrease cycle times, both
         parties will agree to lower FGI requirements.

         MKS may present a claim for "non-purchase" for payment of inventory
         manufactured in response to a valid Applied purchase order, or an
         authorized demand signal, as explained in Section 2.5.1, if Applied has
         not taken delivery of the FGI within 6 months from date of manufacture.
         This claim must be made within thirty (30) days from the end of the 6
         months time frame. Applied is not responsible for payment to MKS for
         FGI built without a valid Applied purchase order, an authorized demand
         signal (as explained in Section 2.5.1), or Applied's Forecast (as
         explained in Section 2.1.3).

         Applied will not hold any financial responsibility for FGI consisting
         of "off-the-shelf" Items that MKS is able to sell to other customers.

         2.2.1.1  WIP Tracking

         MKS is expected to monitor, track, and report their Work-In-Process
         ("WIP") inventory (dollars). In the future, Applied will implement
         regular reporting mechanisms which MKS will be expected to participate
         in.

         2.2.1.2  Excess and Obsolete Items

         Applied will not be responsible for excess and obsolete parts other
         than to the amounts specified above in Section 2.2.1, and in any event
         MKS must make all efforts to mitigate claims for "non- purchase".

         In the event that MKS desires to submit a claim for reimbursement of
         costs associated with obsolete Applied unique build-to-print parts, MKS
         shall submit its claim to Applied's authorized purchasing
         representative within 90 days from the date Applied designated the part
         as obsolete. MKS' claim proposal shall be submitted in accordance with
         Section 26, Termination for Convenience, of Applied's Standard Terms
         and Conditions of Purchase.

                                       -6-

<PAGE>   7

          Confidential Materials omitted and filed separately with the
         Securities and Exchange Commission. Asterisks denote omissions.

         MKS agrees to physically dispose of the excess and obsolete parts as
         directed by Applied's authorized purchasing representative. Parts that
         are to be delivered to Applied's facilities must be delivered in
         accordance with the requirements of this Agreement and/or any
         supplemental instructions provided by Applied's authorized purchasing
         representative. With regard to Applied unique build-to-print parts, in
         lieu of delivery to Applied, Applied may elect to request MKS to
         destroy or otherwise scrap these parts such that these parts are
         non-functional MKS agrees to destroy or otherwise scrap these parts in
         a manner that is satisfactory to Applied and to provide Applied with a
         certification of destruction and/or evidence that the parts have been
         properly disposed of.

         2.2.2    Response Requirements

         Responses to the following types of inquiries are expected within the
         time periods in the tables below.

         2.2.2.1  MKS Response Time

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------------
Inquiry Type                           MKS Response Time                  MKS Contact
----------------------------------------------------------------------------------------------
<S>                                     <C>                    <C>
Lead-time                               1 business day                          Master Planner
----------------------------------------------------------------------------------------------
Technical                               1 business day                  Manufacturing Engineer
----------------------------------------------------------------------------------------------
Quotations                              1 business day         Customer Service Representative
----------------------------------------------------------------------------------------------
Quality                                 1 business day                        Quality Engineer
----------------------------------------------------------------------------------------------
Price/invoice                           1 business day         Customer Service Representative
----------------------------------------------------------------------------------------------
Component failure & field safety               3 hours                        Quality Engineer
----------------------------------------------------------------------------------------------
Product Problems                        1 business day                         Account Manager
----------------------------------------------------------------------------------------------

         2.2.2.2  Applied Response Time

<CAPTION>
----------------------------------------------------------------------------------------------
Inquiry Type                           MKS Response Time                  MKS Contact
----------------------------------------------------------------------------------------------
<S>                                     <C>                    <C>
Lead-time                               1 business day            MKS Account Team Lead/Member
----------------------------------------------------------------------------------------------
Technical                               1 business day            MKS Account Team Lead/Member
----------------------------------------------------------------------------------------------
Quality                                 1 business day            MKS Account Team Lead/Member
----------------------------------------------------------------------------------------------
Price/invoice                           1 business day            MKS Account Team Lead/Member
----------------------------------------------------------------------------------------------
</TABLE>

         2.2.3    Flexibility Requirements

         MKS is expected to perform regular capacity planning and to demonstrate
         reasonable upside/downside manufacturing flexibility in case of demand
         volume changes at Applied. For Bus Route Items, MKS shall be capable of
         manufacturing to unplanned sustained increases/decreases in demand
         above/below Applied's forecast as defined below. For Spot Buy Items,
         MKS allows the following increases/decreases to Purchase Order
         Quantities above/below the quantities originally requested:

         Weeks until Delivery Date     [**]     [**]    [**]    [**]    [**]

         Flexibility +/-               [**]     [**]    [**]    [**]    [**]

                                     -7-

<PAGE>   8

         2.2.4    On-site support requirements

         As determined by Applied, MKS may be asked to provide logistics,
         quality engineering, and new product development support on-site at
         Applied's facilities. At the appropriate juncture, Applied will require
         MKS to execute the On-site Representative Agreement prior to issuing a
         building badge to MKS' representatives.

         2.2.5    Global Support

         For the Items listed in Attachment 1, and all other Items that MKS
         provides to Applied, MKS will provide support globally for Applied and
         Applied's customers.

         Technical assistance and product support services shall be provided at
         no additional charge during normal business hours. MKS must have an
         established and deployed global service capability. The required
         support services must be available globally, however, MKS may utilize a
         MKS distributor, or other -fled entity designated by MKS to meet this
         requirement MKS is expected to use best efforts to provide a resolution
         to requests for assistance.

         2.2.6    Turn-around time for Repairs

         MKS will supply Applied with repair Items under warranty within [**]
         business days from receipt of product. The [**] day cycle is not
         guaranteed if Applied ships repair Items in unreasonable batch sizes.
         MKS will supply Applied with repair Items not under warranty within
         [**] business days from receipt of product.

2.3      INFORMATION

         2.3.1    Applied Planning Systems

         MKS may be given electronic access to Applied's planning data. This
         access, if granted, should only be used to facilitate production and
         delivery of Items to support Applied's requirements. MKS' access to,
         and utilization of, Applied's planning data is subject to the
         confidentiality terms of this Agreement and any NDA.

         2.3.3    Applied New Product Plans

         MKS will on occasion and at Applied's discretion, be invited to forums
         in which Applied's new product plans are shared. Any Applied new
         product plans provided to MKS is subject to the confidentiality
         provisions of this Agreement and any NDA.

2.4      PACKAGING AND TRANSPORTATION

         2.4.1    Packaging and Shipment

         MKS will have all Items packaged "ready for use" in accordance with
         Applied's packaging specification (Attachment 6). MKS will mark and
         identify every item in compliance with Applied's part identification
         specifications and requirements (reference Attachment 6).

                                       -8-

<PAGE>   9

         2.4.2    Bar Coding

         All shipments should be bar coded to Applied's specifications
         (Attachment 5).

         2.4.3    Transportation Mode

         Items will be transported, FOB Origin, Freight Collect in accordance
         with Attachment A of Applied's Corporate Transportation Routing Guide
         which is provided in Attachment 7.

2.5      PAYMENT

         2.5.1    Demand Signal

         BUS ROUTE

         Each day by 10:00 a.m., Applied sends via EDI transmission an order
         sheet to MS containing Applied's material requirements information.
         This information is organized at the part-number level and represents
         Applied's daily purchase from MKS. This EDI transmission constitutes an
         authorized demand signal.

         SPOT BUY

         As needed, Applied sends via fax an order sheet to MKS containing
         Applied's material requirements information. This information is
         organized at the part number level and represents an Applied purchase
         from MKS. This fax constitutes an authorized demand signal.

         2.5.2    Invoices

         Invoices shall contain the following information: purchase order
         number, item number, description of goods, sizes, quantities, unit
         prices, and extended totals in addition to any other information
         requested. Applied's payment of invoice does not represent
         unconditional acceptance of items and will be subject to adjustment for
         errors, shortages, or defects. Applied may at any time set off any
         amount owed by Applied to MKS against any amount owed by MKS or any of
         its affiliated companies to Applied.

         All invoices must be sent directly to Accounts Payable in Austin:

                  Accounts Payable
                  Applied Materials
                  9700 US Highway 290 East M/S 4500
                  Austin, TX 78724-1199

         2.5.3    Cash Discounts

         Payment will be made net thirty (30) days from receipt of:

         a.       invoice, in form and substance acceptable to Applied, or

         b.       delivery and acceptance of the invoiced Item(s), whichever is
                  later.

                                       -9-

<PAGE>   10

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

If payment is made within ten (10) days of the later of either (a) or (b) above,
Applied may [**] from the invoice total as a prompt payment discount.

2.6      DISASTER RECOVERY PLAN

         MKS is expected to develop and provide to Applied, upon request,
         reasonable information describing (provide evidence of a disaster
         recovery plan that includes emergency back up capacity and appropriate
         record protection and recovery. Furthermore, MKS represents that its
         information systems are year 2000 compatible and hereby grants Applied
         the right to verity MKS' internal processes for ensuring compliance
         with this provision. MKS agrees to include this same requirement in its
         purchase orders to its supply base and to provide reasonable efforts to
         verity its supply base is compliant with the requirements herein.

2.7      MANAGING EXCEPTIONS

         2.7.1    Identifying constraints

         MKS is responsible for anticipating inability to perform its
         obligations and limitations on manufacturing, delivery and other
         performance to meeting CSA objectives, informing Applied when those
         constraints occur, and initiating action plans to resolve the
         Constraints might typically include, but not be limited to:

         a.       Consumption over forecast

         b.       Consumption under forecast

         c.       Quality problems

         d.       Capacity/production problems

         e.       Secondary supplier supply-chain management problems

         f.       Other business issues

         2.7.2    Process for Exceptions

         Applied will work with MKS to determine the impact of an exception and
         approve and execute or disapprove the action plans in accordance with
         Section 24, Changes, of Applied's Standard Terms and Conditions of
         Purchase. MKS will notify the MKS Account Team Lead as soon as
         exceptions are identified.

3.       QUALITY FRAMEWORK

3.1      SUPPLIER NON-CONFORMANCES AND CORRECTIVE ACTION

         MKS' quality must meet all applicable Applied specifications as stated
         elsewhere in the Agreement (including all technical specifications and
         detailed drawings). MKS is required to replace or repair defective
         Items at MKS' expense in a timely manner. MKS are required to use the
         most expeditious manner possible to affect the corrections including
         the use of overnight delivery

                                      -10-

<PAGE>   11

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

         services for shipment of Items; at Applied's request, in certain
         circumstances, MKS may be asked to provide new Items in lieu of
         repairing a part to ensure immediate corrective action.

         MKS will be notified of defects with a corrective action form,
         Attachment 10, to which they are expected to respond appropriately. A
         corrective action process to resolve non-conformances will be
         documented and used. In addition, MKS will participate in continuous
         improvement plans and programs as defined by Applied and MKS.

         Should MKS fail to conform to the specifications established in this
         Agreement, Applied may purchase comparable items in the open market as
         necessary to meet its requirements. Applied may at its option charge
         MKS with any reasonable cost differential between the contract price
         and the price paid in the open market. This cost may include premium
         costs for expedited delivery, administrative costs incurred to process
         replacement purchase orders.

3.2      APPLIED NON-CONFORMANCES AND CORRECTIVE ACTION

         Applied will return Items at Applied's expense that do not conform to
         Applied's requirements due to Applied errors. These Items will be
         returned for potential rework. Applied and MKS will agree in advance on
         "standard" repair costs (labor, Items and freight) on items not covered
         under warranty; the standard repair costs will be identified in the
         Items list (Attachment 1B).

         To the extent that a "standard" repair cost has not been established,
         MKS will assess rework costs and timing and inform Applied before work
         is performed. The parties agree that MKS will inform Applied if the
         total price charged for repairing a part will exceed 40% of the current
         purchase price stated in Attachment 1.

         MKS agrees to repair and return all Items within [**] business days
         from receipt of damaged Item. Applied shall have the right to designate
         certain Items for "Same Day" or "24 Hour" repair turnaround. Any
         premium charges for "Same Day" or "24 Hour" repair turnaround will not
         exceed [**] per Item.

         Prior to return of repaired items to Applied, MKS will mark Items with
         Applied's part number, serial number, RMA number, purchase order
         number, range and gas (ff applicable). Applied shall bear the risk of
         loss or damage during transit of Items whether or not the Items meets
         warranty requirements.

         In addition, as stated below in the quality assurance section, a
         corrective action process to resolve non-conformance(s) will be
         documented and used.

3.3      QUALITY ASSURANCE

         All Items purchased under this CSA will be subject to inspection and
         test by Applied at appropriate time and place, including the period of
         manufacture and anytime prior to final acceptance. If inspection or
         test is made by Applied on MKS' premises, MKS will provide all
         reasonable facilities and assistance for the safety and convenience of
         Applied's inspectors at no charge to Applied. No preliminary inspection
         or test shall constitute acceptance. Records of all inspection work
         shall be kept complete and available to Applied during the performance
         of this order and for such further period as Applied may determine.

                                      -11-

<PAGE>   12

         Certificate of Conformance (COC): MKS agrees to certify that Items have
         passed all production acceptance tests and configuration requirements
         and provide a "Certificate of Conformance" (see Attachment 16) and a
         Calibration Data Report that will be included with each product during
         shipment.

         With regard to repair services, MKS shall maintain documentation
         evidencing that all test inspections have been performed. The
         documentation shall indicate the nature and number of observations
         made, the quantities approved and rejected as well as the nature of the
         corrective action take MKS' service centers shall be responsible for
         submitting this data for Applied's review of the delivery summaries.
         The data shall be submitted monthly not later than five days after the
         close of each of Applied's fiscal months to Applied's Contract
         Specialist and Applied's IBSS Repairs Purchasing Group.

         At Applied's request, MKS will provide a certificate and/or a copy of
         the final inspection records showing compliance to applicable
         specifications, contract requirements and any other required documents
         stipulated in Applied's repair authorization. MKS also agrees to
         provide Applied with copies of its current procedures relative to
         repairs, range change and warranty repairs.

         Through MKS' internal Quality Service organization, MKS will track and
         maintain its internal manufacturing reject rate by percentage of
         assemblies, and/or part per million ("TPM"). Trend reporting and
         corrective actions shall be furnished to Applied as requested by
         Applied Purchasing or Quality representatives. MKS will provide quality
         data in the format, as shown in Attachment 11, and as received by
         Applied MKS may also be required to provide reasonable additional data
         to support qualification and certification programs.

3.4      WARRANTY

         MKS warrants that all Items delivered to Applied will be free from
         defects in workmanship, material, and manufacture; will comply with the
         requirements of this Agreement, and, where design is MKS'
         responsibility, will be free from defects in design. All services will
         be performed in a competent, professional and workmanlike manner, free
         from defects and in accordance with best professional practices or the
         like. MKS FURTHER WARRANTS ALL ITEMS PURCHASED OR REPAIRED WILL BE OF
         MERCHANTABLE QUALITY AND WILL BE FIT AND SUITABLE FOR THE PURPOSE
         INTENDED BY APPLIED. THESE WARRANTIES ARE IN ADDITION TO ALL OTHER
         WARRANTIES, WHETHER EXPRESSED OR IMPLIED, AND WILL SURVIVE ANY
         DELIVERY, INSPECTION, ACCEPTANCE, OR PAYMENT BY APPLIED. If any Items
         delivered by MKS do not meet the warranties specified herein or
         otherwise applicable, Applied may, at its option:

         (i)      require MKS to correct at no cost to Applied any defective or
                  non-conforming Items by repair or replacement, or

         (ii)     return such defective or non-conforming Item at MKS' expense
                  to MKS and recover from MKS the order price thereof, or

         (iii)    correct the defective or non-conforming Item itself or through
                  a mutually approved third party and charge MKS with the cost
                  of such correction

         (iv)     cancel the balance of the undelivered non-conforming Item
                  and/or this CSA in accordance with Section 25, Termination for
                  Default, of Applied's standard Terms and Conditions of
                  Purchase.

                                      -12-

<PAGE>   13

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

         All warranties will run to Applied and to its customers. Applied's
         approval of MKS' material or design will not relieve MKS of the
         warranties established in this agreement. In addition, if Applied
         waives any drawing or specification requirement for one or more of thE
         goods, it will not constitute a waiver of all requirements for the
         remaining goods to be delivered unless stated by Applied in writing.

3.5      OTHER QUALITY PROGRAMS

         3.5.1    MKS' Quality System

         MKS' quality system must be in compliance with ISO 9000. If MKS is not
         currently ISO 9000 certified, MKS must provide their documented plans
         to achieve certification with a tune that is mutually agreeable to both
         parties. MKS also agrees to participate in the SSQA development and
         implementation plan.

         3.5.2    MKS' Process Quality

         Applied Materials requirements and workmanship standards shall be
         integrated into MKS' processes and identified accordingly. MKS shall
         identify the critical processes effecting the product quality and
         develop a validated list of the critical processes by discussing with
         Applied Materials. All data generated as a result of the critical
         manufacturing processes shall be collected, processed and used for
         process control and continuous improvement Evidence of process control
         of critical processes is a requirement and the presence of control
         charts and statistical process control is required. Processes not
         exhibiting a Cpk of 1.33 will require a formal corrective action plan
         to achieve the required process control. The critical manufacturing
         processes on pressure transducers, flow products and electronic
         products are:

                  [**]

                  [**]

                  [**]

                  [**]

                  [**]

         3.5.3    Part quality containment and corrective action

         When Applied Materials identifies a product non-conformance on a piece
         part and requests MKS to implement containment action on the part
         failure, MKS shall respond within [**] with a documented containment
         plan and shall have implemented the plan. MKS shall provide follow up
         to this containment plan with a closed loop corrective action
         identifying the root cause, a permanent fix and tune line to implement
         the corrective action. Applied Materials may perform a follow up audit
         to verify the effective implementation of the corrective action and
         approve the closure of the corrective action.

         Applied Materials may develop or request MKS to develop Inspection
         Standard Sheets on identified part numbers for deployment in MKS'
         operation. ISS's will be deployed in final

                                      -13-

<PAGE>   14

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

         inspection, completed and records maintained as part of MKS' quality
         system. Template will be provided by Applied Materials supplier quality
         organization.

         3.5.4    MKS Audits

         Applied Materials will conduct the following audits, as required, to
         ensure a high level of quality of parts and assemblies purchased from
         MKS.

         3.5.4.1  Source Inspection

         Applied Materials may conduct source inspection at MKS' site at any
         time. Performance of source inspection does not waive MKS
         responsibility for any defects that might subsequently be identified by
         Applied Materials or its customers.

         3.5.4.2  Piece part audits

         Piece part audits may be performed at MKS' site or at Applied
         Materials. MKS shall identify the failure and respond commitment to
         contain the part failure with in [**] from notification. MKS shall also
         perform the root cause analysis of the failure for containment and
         corrective action. MKS shall agree to inform Applied Materials about
         the root cause, corrective action, its implementation plan and schedule
         with in the time period agreed upon.

         3.5.4.3  Process audits

         When a systemic failure trend is observed in the piece part or assembly
         supplied, Applied Materials or MKS shall identify the process which are
         causing the failure and audit the processes at MKS' site. Any
         deficiencies or opportunities for improvements identified from the
         audit will be discussed with MKS and a closed loop corrective action
         will be established, specifying the correction action required with a
         specified timeline for implementation. MKS shall agree to work on the
         corrective action and provide closure to all deficiencies within the
         time period agreed upon.

         3.5.4.4  System assessment

         Applied Materials, at any time may decide to perform a quality system
         audit at MKS' site. Any deficiencies or opportunities for improvements
         identified from the audit will be discussed with MKS and a closed loop
         corrective action will be established, specifying the corrective action
         required with a specified timeline for implementation. MKS shall agree
         to work on the corrective action and provide closure to all
         deficiencies within the time period agreed upon.

         3.5.5    MKS' control over their subcontractors

         MKS shall demonstrate control over the selection of subtier suppliers
         and maintain a controlled Approved Suppliers List that is supported by
         on site audits and completed corrective actions prior to selection and
         periodically to ensure the highest quality of procured parts and
         assemblies. MKS is required to provide Applied Materials with a quality
         plan for

                                      -14-

<PAGE>   15

         the selection, control and maintenance of subtier suppliers and will
         include periodic testing performed by MKS to ensure compliance to
         Applied Materials specifications. Quality records of MKS' subtier
         suppliers shall be made available, upon request, to Applied Materials
         for review.

         3.5.6    MKS communication

         MKS agrees to send a report on their quality performance on either a
         weekly or monthly basis the frequency and content of which is to be
         mutually agreed to between the quality engineering representatives from
         each party. Applied's quality engineer may schedule a periodic meeting
         with the MKS representative managing the quality to discuss the
         contents of MKS' quality report, parts containment, closed loop
         corrective action, audit findings or any other issues related to
         quality. MKS agrees to develop, with the help and approval of Applied
         Materials, a pro-active quality road map to improve their part quality
         to meet the Applied Materials quality goals. And the status of the
         effectiveness of the implementation plan will be monitored by MKS and
         reviewed with Applied Materials on a periodic basis.

         3.5.7    Formal Quality Plan

         A formal quality plan will be developed jointly by MKS and Applied
         Materials and will contain part and process specific requirements
         identified to ensure the manufacture of high quality parts. MKS will
         conform to all requirements of the plan. Periodic assessments of the
         quality plan will be performed by the Applied supplier quality engineer
         to ensure conformance to all requirements. The completed plan will be
         an attachment to this contract.

         3.5.8    Pro-active Action Plans

         MKS is advised to work with Applied Materials in a pro-active way on
         the following.

                  1.       Work with the Quality Engineers on the manufacturing
                           floor to receive the DMR parts as soon as possible.

                  2.       Work with the WMO/PBG buyers in reversing the PPMs
                           from MKS fault to Applied Materials' fault in
                           applicable cases.

4.       PRICING FRAMEWORK

4.1      PRICING BY PART NUMBER

         The pricing for the Items are shown in Attachments 1A (part numbers)
         and 1B (service and repair). Any modifications to these must be made in
         accordance with Section 7 of this Agreement. MKS commits to on-going
         cost improvement during the period of this Agreement in accordance with
         Section 6.

         At the time of the Agreement Effective Date, the remaining balance of
         undelivered items on all open purchase orders will be revised to the
         agreement price.

         Specific circumstances may result in a review of the agreement terms,
         including prices. These include, but are not limited to:

                                      -15-

<PAGE>   16

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

         a.       Volume increases resulting in an increase in agreement value
                  of over [**] (subsequent to completion of negotiations on the
                  existing prices);

         b.       Addition of Items to the agreement increasing the value of the
                  Agreement over [**]

         c.       Cost reductions(savings over and above those committed in the
                  MKS performance plan.;

         d.       Price reductions in accordance with Section 6,[**], of
                  Applied's standard Terms and Conditions of Purchase.

4.2      COOPERATIVE PRICING MODELS/FORMULAS

         SEE ATTACHMENT 1

4.3      VOLUME

         MKS will be provided a range of potential volume that may be purchased.
         Applied does not commit to buy a specific volume of a part number from
         a MKS. Applied does not limit its ability to buy the same part number
         from multiple sources.

4.4      EXPORT PRICING

         MKS should quote Applied in unit prices based upon delivery FCA Free
         carrier. MKS is expected to prepare the export paperwork and be the
         exporter of record. MKS must utilize Applied's preferred carriers to
         arrange the export of the goods. Applied will pay the freight charges
         based on Applied's rates with its preferred carriers. Applied will be
         responsible for importing the goods into the destination country.

4.5      CURRENCY

         All prices are quoted in US dollars; prices for foreign manufactured
         Items will not be adjusted to reflect changes in the exchange rate. MKS
         is encouraged to obtain any necessary currency exchange protection it
         deems appropriate.

         Notwithstanding the agreement to quote product in U.S. Dollars, the
         parties agree that any Applied entity operating in the same country as
         MKS's manufacturing plant or sales and service depots may issue orders
         for MKS's products using the local currency for the purposes of
         effecting payment. The prices will be converted to local currency as
         follows:

         PARTS MANUFACTURED EXCLUSIVELY OUTSIDE OF THE UNITED STATES:

         The U.S. Dollar prices in Attachment 1 will be converted to local
         currency, on a quarterly basis, using the official exchange rate listed
         in Bloomberg(TM) or Olsen(TM) publications. The exchange rate shall be
         the mid point between the bid and ask price listed at the close of the
         following days: January 2nd, April 1st, July 1st, October 1st.

                                      -16-

<PAGE>   17

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

         PARTS MANUFACTURED EXCLUSIVELY WITHIN THE UNITED STATES:

         The various packaging, shipping, export and import costs associated
         with parts manufactured exclusively within the United States and
         offered for sale outside the United States will be paid by MKS as part
         of its normal operating expenses. In consideration for said costs,
         Applied agrees that MKS may increase the U.S. Dollar prices in
         Attachment 1 by not more than [**] prior to converting the U.S. price
         to the local currency price using the official exchange rate listed in
         Bloomberg(TM) or OIsen(TM) publications. The exchange rate shall be the
         mid point between the bid and ask price listed at the close of the
         following days: January 2nd, April 1st, July 1st, October 1st.

4.6      PROTOTYPES

         MKS is committed to price all Items consistent with contract prices.

         MKS agrees to provide prototype Items priced considering the total
         value of Applied's business with MKS. This may be accomplished in
         several ways, including:

         a.       a specific number of prototype Items may be provided free of
                  charge

         b.       Items may be priced at production levels

4.7      ADVANCES FOR RAW MATERIALS

         Applied does not provide advance payments for the purchase of raw
         materials.

5.       TECHNICAL FRAMEWORK

5.1      ENGINEERING CHANGE ORDERS

         Applied may change its drawings, design, and specifications at any time
         in accordance with Section 25, Changes, of Applied's Standard Terms and
         Conditions of Purchase. Applied Supplier Engineer will review with MKS
         all proposed Engineering Change Orders (ECO's) that impact the form,
         fit, or function of Items. Applied will, in writing, provide approved
         ECO's (refer to Attachment 12) and state the effective dates of all
         changes. Unless otherwise notified, Applied Receiving Inspection will
         inspect to the latest revision in effect at the time of receipt

         MKS may request engineering changes via a MKS Problem Sheet (refer to
         Attachment 13). This form should be submitted to Applied Supplier
         Engineer. Changes shall not be implemented by MKS until written
         permission to proceed is given by Applied's authorized purchasing
         representative and the agreement is modified accordingly. Applied will
         consider claims for adjustment in the terms of this Agreement if made
         before the implementation of the changes.

5.2      TOOLING

         Unless otherwise agreed to in writing, special dies, tools, patterns
         and drawings used in the manufacture of Items shall be furnished by and
         at the expense of, MKS.

                                      -17-

<PAGE>   18

5.3      DESIGN CHANGES AND RESOLUTION

         For the term of this Agreement, MKS will not make changes to the design
         of any part that may alter form, fit, function or a significant
         manufacturing process without a documented engineering change request
         and prior written approval from Applied's authorized purchasing
         representative and the agreement is modified accordingly.

         If Applied's design changes impact the pricing, delivery, lead-time, or
         other terms and conditions of this Agreement, and agreement upon
         alternate terms cannot be reached with MKS, then Applied may remove the
         subject Items from this Agreement without affecting the remaining
         Items.

5.4      PROCESS CHANGES AND RESOLUTION

         MKS is expected to inform Applied of process and MKS changes to include
         changes in specifications, manufacturing locations, even when
         specifications are met. MKS must receive written approval in writing
         from Applied before implementing changes. MKS must use the specified
         Applied "approved" list of secondary process suppliers, where
         designated. The use of Applied approved secondary process suppliers
         does not relieve MKS of the responsibility for management of the
         subtier supplier and for ensuring the quality of parts received.

5.5      SUBCONTRACTING

         MKS shall not subcontract for completed or substantially completed
         components and processes supplied to Applied without prior written
         approval of Applied. MKS will ensure that all subcontractors to MKS
         that have access (directly or indirectly) to Applied specifications
         must be covered by a NDA that is similar in form and substance to
         Applied's NDA.

5.6      FIRST ARTICLES

         A new Item, Item with revised drawings, or other changes as delineated
         above, must have a first article evaluated and accepted by Applied (a
         "First Article"). An Item will not be authorized for deliveries until
         acceptance of the First Article by Applied. MKS will maintain First
         Article qualifications/evidence data file with content as defined by
         Applied for the specific part. First Article data is to be made
         available to Applied upon request and shall be retained by MKS during
         the performance of this Agreement or subsequent agreements.

5.7      OUTSOURCING

         Applied may at its discretion elect to outsource an assembly or module
         to a third party ("Subassembler") and if the selected assembly or
         module includes any Item under this CSA (an "affected Item"), Applied
         will advise MKS of the Subassembler, unless precluded from doing so by
         confidentiality or other requirements. MKS understands that the
         selection and responsibility for sourcing any affected Items will
         generally be the responsibility of the Subassembler. If MKS is not
         selected as the source for an affected Item, any affected items or
         applicable quantities of affected Items may, at Applied's discretion,
         be removed from this Agreement.

5.8      PRODUCT SUPPORT

         MKS agrees to provide Items, and technical and service support to
         Applied for all of the Items for a minimum of ten years from the date
         of final shipment of a part to Applied.

                                      -18-

<PAGE>   19

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

         Alternatively, the parties may agree to establish a product support
         period less than ten years provided that MKS agrees to grant to Applied
         a non-exclusive license to make, have made, use, sell, and support the
         Items in a form and on terms acceptable to Applied.

5.9      COMMODITY SPECIFIC ISSUES

         Reserved

5.10     TECHNOLOGY ROADMAP

         Reserved

6.       PERFORMANCE MANAGEMENT

6.1      SUPPLIER PERFORMANCE PLAN

         As part of this Comprehensive Supplier Agreement, Applied and MKS agree
         to jointly develop a Supplier Performance Plan. Attachment 15 outlines
         the performance plan.

6.2      SUPPLIER PERFORMANCE MANAGEMENT

         6.2.1    Metrics and Targets

         MKS agrees to target the operational performance targets defined below.
         Performance targets for FY2000 are listed. Intermediate performance
         targets are established in the Supplier Performance Management Plan.
         The following defines how Applied and MKS will measure performance
         metrics:

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------
                                                                                FY 1999 End      FY 2000 End
        Measure              Definition                Calculation                Target            Target
------------------------------------------------------------------------------------------------------------
<S>                       <C>                      <C>                             <C>               <C>
Quality ppm               Number of quality         Quantity of parts with
                          discrepancies             recorded DMR                   [**]              [**]
                          detected prior to         occurrences provided
                          shipping a completed      by the supplier over
                          system to an end          the prior 13-week
                          customer, expressed       period, divided by the
                          as parts per million      total quantity of parts
                                                    received from that
                                                    supplier over the same
                                                    period, multiplied by
                                                    1 million
------------------------------------------------------------------------------------------------------------
Supplier Fault DMRs       Number of DMR             Number of DMR                  [**]              [**]
                          transactions for part     occurrences recorded
                          quality discrepancies     against the supplier
                          detected in-house         accumulated over the
                          prior to system           prior 13-week period
                          installation in the
                          field
------------------------------------------------------------------------------------------------------------
</TABLE>

                                      -19-

<PAGE>   20

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------
                                                                                FY 1999 End      FY 2000 End
        Measure              Definition                Calculation                Target            Target
------------------------------------------------------------------------------------------------------------
<S>                       <C>                      <C>                             <C>               <C>
Late Delivery ppm         Number of parts           Quantity of parts
                          delivered later than      received one day or            [**]              [**]
                          the agreed upon           more after the commit
                          commit date               date, accumulated for
                                                    each supplier over a rolling
                                                    13-week period, divided by
                                                    the total quantity of parts
                                                    received over the same
                                                    period, multiplied by 1
                                                    million
------------------------------------------------------------------------------------------------------------
Early Delivery ppm        Number of parts           Quantity of parts
                          received three or         received three or more         [**]              [**]
                          more days before the      days before the
                          commit date               commit date,
                                                    accumulated over a rolling
                                                    13-week period, divided by
                                                    the total quantity of parts
                                                    received over the same
                                                    period, multiplied by 1
------------------------------------------------------------------------------------------------------------
Average Lead Time
of Production Parts
(Order Fulfillment
Cycle Time)
------------------------------------------------------------------------------------------------------------
Source Cycle Time         Average of the total      The average of the
(supplier reported)       times, from               number of days                 [**]              [**]
                          placement of an           between order date
                          order through receipt     and receipt date for all
                          at Applied Materials,     production parts
                          of parts supplied to      recorded for the
                          volume production         supplier, based on
                          (including                Austin volume
                          transportation time)      production activity.
------------------------------------------------------------------------------------------------------------
Make Cycle Time           Total cycle time to       Elapsed time, as
(supplier reported)       source all materials      determined through             [**]              [**]
                          required to produce       process audits and
                          an order, based on        supplier
                          contracted parts          self-assessments
                          supplied to volume
                          production
------------------------------------------------------------------------------------------------------------
</TABLE>

                                     -20-

<PAGE>   21

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------
                                                                                FY 1999 End      FY 2000 End
        Measure              Definition                Calculation                Target            Target
------------------------------------------------------------------------------------------------------------
<S>                       <C>                      <C>                             <C>               <C>
Cost Reduction            Total production time     Elapsed time, as
                          required to fulfill an    determined through             [**]              [**]
                          order, including          process audits and
                          manufacturing order       supplier
                          release and build         self-assessments
                          time, based on
                          contracted parts
                          supplied to volume
                          production
------------------------------------------------------------------------------------------------------------
                          Percentage difference     Calculated for each
                          between the average       contract by the SAT,           [**]              [**]
                          unit price paid for       using the method
                          materials in the prior    accepted by the SMO
                          year and price paid       commodity group
                          in the current year       (see Attachment 17)
------------------------------------------------------------------------------------------------------------
</TABLE>

7.       AMENDMENTS AND MODIFICATIONS

         This CSA may be revised by the mutual consent of Applied and MKS.
         Revisions to this CSA must be in writing, signed by both Applied and
         MKS duly authorized representatives, traced by revision numbers and
         attached to this original agreement. A change to one attachment of this
         agreement will constitute a revision level change. The master copy of
         this CSA and any revisions are to be maintained by Applied.

         Updates to Section 2.2, Service levels, and changes may be communicated
         via memos sent by mail, fax or e-mail.

8.       GLOSSARY

         TBD

9.       ACCEPTANCE

         Accepted:

/s/ Michael Berkaw                             /s/ Leo Berlinghieri
---------------------------------              ---------------------------------
Applied Materials, Inc.                        MKS
Michael Berkaw                                 Leo Berlinghieri
Contract Specialist                            VP of Customer Service
Chemical Delivery SMO                          MKS Instruments

Date: 3/13/01                                  3/13/01

                                      -21-

<PAGE>   22
                                    EXHIBIT 1

               APPLIED MATERIALS TERMS AND CONDITIONS OF PURCHASE

1        Acceptance

         The terms and conditions stated in these Applied Materials Standard
         Terms and Conditions of Purchase become the agreement between the
         parties covering the purchase of the goods or services (collectively
         referred to as "Items") ordered in the Purchase Agreement/Comprehensive
         Supplier Agreement/Basic Supplier Agreement of which these Terms and
         Conditions are a part when this Agreement is accepted by acknowledgment
         or commencement of performance. This Agreement can be accepted only in
         these terms and conditions. Additional or different terms proposed by
         Supplier will not be applicable unless accepted in writing by the
         Buyer. No change, modification, or revision of this Agreement will be
         effective unless in writing and signed by duly authorized
         representative of Buyer.

2.       Confidential and Proprietary Information

         Supplier will observe and is bound by the terms and conditions of any
         and all Non- Disclosure Agreements (NDAs) executed by Supplier with or
         for the benefit of Buyer, whether now or hereafter in effect. In
         addition, all schematics, drawings, specifications and manuals, and all
         other technical and business information provided to Supplier by Buyer
         during the term of, or in connection with the negotiation, performance
         or enforcement of this Agreement shall be deemed included in the
         definition (subject to any applicable exclusions therefrom) of
         "Proprietary Information" for purposes of this Agreement.

         Supplier may use Buyer's Proprietary Information only for the purpose
         of providing Items, parts or components of Items or services to Buyer.
         Supplier will not discuss and further will not use any of Buyer's
         Proprietary Information, directly or indirectly, for any other purpose
         including, without limitation, (a) developing, designing,
         manufacturing, refurbishing, selling or offering for sale parts or
         components of Items or parts, or providing services, for or to any
         party other than Buyer, and (b) assisting any third party, in any
         manner, to perform any of the activities described herein. All
         Proprietary Information shall (a) be clearly marked by Supplier as
         Buyer's property and segregated when not in use, and (b) be returned to
         Buyer promptly upon request.

         Supplier acknowledges and agrees that Buyer would suffer irreparable
         harm for which monetary damages would be an inadequate remedy if
         Supplier were to breach its obligations under this provision. Supplier
         further acknowledges and agrees that equitable relief, including
         injunctive relief, would be appropriate to protect Buyer's rights and
         interests if such a breach were to arise, or threatened, or were
         asserted.

         Supplier will use reasonable efforts to notify Buyer of any third party
         requests to engage in any of the activities prohibited by this Article.

3.       Intellectual Property

         Nothing in this Agreement shall be deemed to grant to Supplier any
         license or other right under any of Buyer's intellectual property
         (including, without limitation, Buyer's patents, copyrights, trade and
         service marks, trade secrets, and Proprietary Information) for
         Supplier's own benefit or to provide or offer Items to any party other
         than Buyer.

                                       -1-

<PAGE>   23

         All Items supplied by Supplier and the sale of Items by Supplier and,
         as applicable, use thereof by Buyer or its subsequent purchasers or
         transferees will be free from liability for or claim by any persons of
         royalties, patent rights, copyright, trademark, mechanics' liens or
         other encumbrances, and trade secrets or confidential or proprietary
         intellectual property rights (collectively "rights" and
         "encumbrances"), and Supplier shall defend, indemnify and hold harmless
         Buyer against all claims, demands, costs and actions for actual or
         alleged infringements of patent, copyright, trademark or trade secret
         rights or other rights and encumbrances in the use, sale or re-sale of
         any Item which are valid at the time of or after the effective date of
         this Agreement; except to the extent that the infringement was
         unavoidably caused by Supplier's compliance with a detailed design
         furnished and required by Buyer or by Buyer's non-compliance with
         Supplier's prior written advice or warning of a possible and likely
         infringement

         At the request of Buyer, Supplier will provide to Buyer the most
         current and complete specifications and drawings (the "Drawings") for
         each Item manufactured or produced for Buyer that is based on Buyer's
         design or Drawings showing the complete specifications and design for
         the Item as manufactured or produced by Supplier. All Drawings are the
         sole property of Buyer.

         Upon termination of this Agreement, Supplier will return all Applied
         Proprietary Information and documentation to Buyer. Notwithstanding
         this requirement, Supplier may request Buyer approval to destroy any
         Proprietary Information of Buyer that has become obsolete or outdated
         (e.g., financial projections, forecasts, et cetera); provided that
         Supplier certifies to Buyer the destruction of such Proprietary
         Information.

4.       Patent License

         Supplier, as part consideration for this Agreement and without further
         cost to Buyer, hereby grants to Buyer an irrevocable, non-exclusive,
         paid-up world-wide right and license to make, have made, use, and sell
         any inventions derivative works, improvements, enhancements, or
         intellectual property (the "Inventions"') made by or for Supplier in
         the performance of this Agreement. Supplier shall cause any employee,
         consultant, contractor or other persons who provides work for hire to
         Supplier to assign to Supplier for licensing as above of any such
         inventions. In addition, Buyer shall be entitled to license Buyer's
         customers to use such inventions during the operation of Buyer's
         products.

5.       Press Releases/Public Disclosure Not Authorized

         Supplier will not, without the prior written approval of Buyer, issue
         any press releases, advertising, publicity, public statements or in any
         way engage in any other form of public disclosure that indicates the
         terms of this Agreement, Buyer's relationship with Supplier or implies
         any endorsement by Buyer of Supplier or Supplier's products or
         services. Supplier further agrees not to use, without the prior written
         consent of Buyer, the name or trademarks (including, but not limited to
         Buyer's corporate symbol). Any requests under this Section must be made
         in writing and submitted to the parties designated by Buyer for the
         review and authorization of such matters.

                                       -2-

<PAGE>   24

          Confidential Materials omitted and filed separately with the
         Securities and Exchange Commission. Asterisks denote omissions.

6.       [**]

         Supplier does not presently sell or offer any Item that is similar in
         form, fit or function to any Item to any third party for prices and
         terms and conditions of sale (including, without limitation,
         warranties, services or other benefits) (collectively, "Benefits") [**]
         to Buyer in this Agreement. If during the term of this Agreement,[**]
         for any Item than those available to Buyer under this Agreement (a
         "Third Party Arrangement"), Supplier will notify Buyer [**], Supplier
         will notify Buyer [**] and this Agreement will be deemed [**]. However,
         Buyer, at its option, may [**]. If any [**], Supplier will [**] that
         Buyer [**] from the effective date [**] shall be [**] of the effective
         date [**]. In no event shall Supplier quote prices to Buyer that would
         be unlawfully discriminatory under any applicable law.

7.       Duty Drawback

         Supplier will provide Buyer with U.S. Customs entry data, including
         information and receipts for duties paid directly or indirectly on all
         Items that are either imported or contain imported parts or components,
         that Buyer determines is necessary for Buyer to qualify for duty
         drawback ("Duty Drawback Information"). This data will be provided to
         Buyer within fifteen (15) days after each calendar quarter (or fiscal
         year quarter of Buyer, and be accompanied by a completed Certificate of
         Delivery of Imported Merchandise or Certificate of Manufacture and
         Delivery of Imported Merchandise (Customs Form 331) as promulgated
         pursuant to 19 CFR 191.

8.       ODC Elimination

         In the event Supplier's goods are manufactured with or contain Class I
         ODCs as defined under Section 602 of the Federal Clean Air Act (42 USE
         Section 7671 a) and implementing regulations, or if Supplier suspects
         that such a condition exists, Supplier shall notify Buyer prior to
         performing any work against this Agreement. Buyer reserves the right
         to: (a) terminate all Agreements for such goods without penalties, (b)
         to return any and all goods delivered which are found to contain or
         have been manufactured with Class I ODCs, or (c) to terminate any
         outstanding Agreements for such goods without penalties. Supplier shall
         reimburse Buyer all monies paid to Supplier and all additional costs
         incurred by Buyer in purchasing and returning such goods.

9.       Compliance With Laws

         Supplier warrants that no law, rule, or ordinance of the United States,
         a state, any other governmental agency, or that of any country has been
         violated in supplying the goods or services ordered herein.

10.      Equal Employment Opportunity

         Supplier represents and warrants that it is in compliance with
         Executive Agreement 11246, any amending or supplementing Executive
         Agreements, and implementing regulations unless exempted.

                                       -3-

<PAGE>   25

11.      Applicable Law, Consent to Jurisdiction, Venue

         This Agreement shall be governed by, be subject to, and be construed in
         accordance with the internal laws of the State of California, excluding
         conflicts of law rules. The parties agree that any suit arising out of
         this Agreement, for any claim or cause of action, whether in contract,
         in tort, statutory, at law or in equity, shall exclusively be brought
         in the United States District Court for the Northern District of
         California or in the Superior or Municipal Courts of Santa Clara
         County, California, or in the United States District Court for the
         Western District of Texas, Austin Division, or the Texas State District
         Courts of Travis County, Texas, provided that such court has
         jurisdiction over the subject matter of the action. Each party agrees
         that each of the named courts shall have personal jurisdiction over it
         and consents to such jurisdiction. Supplier further agrees that venue
         of any suit arising out of this Agreement is proper and appropriate in
         any of the courts identified above; Supplier consents to such venue
         therein as Buyer selects and to any transfer of venue that Buyer may
         seek to any of such courts, without respect to the initial forum.

         With respect to transactions to which the 1980 United Nations
         Convention of Contracts for the International Sale of Goods would
         otherwise apply, the rights and obligations of the parties under the
         Agreement, including these terms and conditions, shall not be governed
         by the provisions of the 1980 United Nations Convention of Contracts
         for the International Sale of Goods; instead' applicable laws of the
         State of California, including the Uniform Commercial Code as adopted
         therein (but exclusive of such 1980 United Nations Convention) shall
         govern.

12.      Notice of Labor Disputes

         Whenever an actual or potential labor dispute, or any government
         embargoes, regulatory or tribunal proceedings relating thereto is
         delaying or threatens to delay the timely performance of this
         Agreement, Supplier will immediately notify Buyer of such dispute and
         furnish all relevant details regardless of whether said dispute arose
         directly, or indirectly, as a result of an actual or potential dispute
         within the Supplier's subtier supply base or its own operations.

13.      Taxes

         Unless otherwise specified, the agreed prices include all applicable
         federal, state, and local taxes. All such taxes shall be stated
         separately on Supplier's invoice.

14.      Responsibility for Goods; Risk of Loss

         Notwithstanding any prior inspections, Supplier shall bear all risks of
         loss, damage, or destruction to the Items called for hereunder until
         final acceptance by Buyer at Buyer's facility(s) delivery destination
         specified in the Agreement, which risk of loss shall not be altered by
         statement of any at F.O.B. point here. These Supplier responsibilities
         remain with respect to any Items rejected by Buyer provided, however,
         that in either case, Buyer shall be responsible for any loss occasioned
         by the gross negligence of its employees acting within the scope of
         their employment. Items are not accepted by reason of any preliminary
         inspection or test, at any location.

15.      Insurance

         A.       Supplier shall maintain (i) comprehensive general liability
                  insurance covering bodily injury, property damage, contractual
                  liability, products liability and completed operations, (ii)
                  Workers Compensation and employer's liability insurance, and
                  (iii) auto

                                       -4-

<PAGE>   26

                  insurance, in such amounts as are necessary to insure against
                  the risks to Supplier's operations.

         B.       Minimally, Supplier will obtain and keep in force, insurance
                  of the types and in the amounts set forth below:

<TABLE>
<CAPTION>
                  Insurance                             Minimum Limits of Liability
                  ---------                             ---------------------------
                 <S>                                   <C>
                  Worker's Compensation                 Statutory
                  Employer's Liability                  $1,000,000
                  Automobile Liability                  $1,000,000 per occurrence
                  Comprehensive General Liability       $1,000,000 per occurrence
                     (including Products Liability)

                  Umbrella/Excess Liability             $1,000,000 per occurrence
</TABLE>

         All policies must be primary and non-contributing, and shall include
         Buyer as an additional insured. Supplier also waives all rights of
         subrogation. Supplier will also require and verify that each of its
         subcontractors carry at least the same insurance coverage and minimum
         limits or insurance as Supplier carries under this Agreement. Supplier
         shall notify Buyer at least thirty (30) days prior to the cancellation
         of or implementation of any material change in the foregoing policy
         coverage that would affect the Buyer's interests. Upon request,
         Supplier shall furnish to Buyer as evidence of insurance a certificate
         of insurance stating that the coverage would not be canceled or
         materially altered without thirty (30) days prior notice to the Buyer.

16.      Change of Control

         Supplier will notify Buyer immediately of any change of control or
         change (including any change in person or persons with power to direct
         or cause the direction of management or policies of Seller) or any
         change (35% or more) in the ownership of Supplier, or of any materially
         adverse change in Supplier's financial condition or in the operation of
         Supplier's business, including, but not limited to, Supplier's net
         worth, assets, production capacity, properties, obligations or
         liabilities (fixed or contingent) (collectively, a "change of
         control").

17.      Assignments

         A.       No right or obligation under this Agreement shall be assigned
                  by Supplier without the prior written consent of Buyer, and
                  any purported assignment without such consent shall be void.

         B.       Buyer may assign this Agreement in whole or part at any time
                  if such assignment is considered necessary by Buyer in
                  connection with a sale of Buyer's assets, or a transfer of any
                  of its contracts or obligations under such contracts, or a
                  transfer to a third party of manufacturing activities
                  previously conducted by Buyer.

18.      Gratuities

                                      -5-

<PAGE>   27

         Supplier warrants that it has not offered or given and will not offer
         or give any gratuity to induce this or any other agreement. Upon
         Buyer's written request, an officer of Supplier shall certify in
         writing that Supplier has complied with and continues to comply with
         this Section. Any breach of this warranty shall be a material breach of
         each and every agreement and contract between Buyer and Supplier.

19.      Insolvency

         The insolvency of Supplier, the filing of a voluntary or involuntary
         petition for relief by or against Supplier under any bankruptcy,
         insolvency or like law, or the making of an assignment for the benefit
         of creditors, by Supplier, shall be a material breach hereof and
         default.

20.      Waiver

         In the event Buyer fails to insist on performance of any of the terms
         and conditions, or fails to exercise any of its rights or privileges
         hereunder, such failure shall not constitute a waiver of such terms,
         conditions, rights or privileges.

21.      Disclaimer and Limitation of Liability

         In no event shall Buyer be liable for any special, indirect,
         incidental, consequential, or contingent damages (the foregoing being
         collectively called "Damages"), whether or not Buyer has been advised
         of the possibility of such damages, for any reason. Buyer excludes and
         Supplier waives any liability of Buyer for any "Damages", as so
         defined.

22.      Indemnity by Supplier

         Supplier shall defend, indemnify and hold harmless Buyer from and
         against, and shall solely and exclusively bear and pay, any and all
         claims, suits, losses, penalties, damages (whether actual, punitive,
         consequential or otherwise) and all liabilities and the associated
         costs and expenses (including attorney's fees, expert's fees, and costs
         of investigation (all of the foregoing being collectively called
         "Indemnified Liabilities"), caused in whole or in part by Supplier's
         breach of any term or provision of this Agreement, or in whole or in
         any part by any negligent, grossly negligent or intentional acts,
         errors or omissions by Supplier, its employees, officers, agents or
         representatives in the performance of this Agreement or that are for,
         that are in the nature of, or that arise under, strict liability or
         products liability with respect to or in connection with the Items. The
         indemnity by Supplier in favor of Buyer shall extend to Buyer, its
         officers, directors, agents, and representatives and shall include and
         is intended to include Indemnified Liabilities which arise from or are
         caused by, in whole or in part, the concurrent negligence, including
         negligence or gross negligence of Supplier but shall not extend to
         Indemnified Liabilities to the extent such are caused by the negligence
         or willful misconduct of Buyer. Supplier assumes no liability under
         this warranty for system failures, personal injury or property damage
         resulting from improper operation, improper maintenance, abuse or
         modifications from the original product specifications or configuration
         on the part of Buyer, it's customers, agents and other third parties.

23.      Force Majeure

         A failure by either party to perform due to causes beyond the control
         and without the fault or negligence of the party is deemed excusable
         during the period in which the cause of the failure persists. Such
         causes may include, but not be limited to, acts of God or the public

                                       -6-

<PAGE>   28

         enemy, acts of the Government in either sovereign or contractual
         capacity, fires, floods, epidemics, strikes, freight embargoes and
         unusually severe weather. If the failure to perform is caused by the
         default of a subcontractor, and such default arises out of causes
         beyond the control of both the Supplier and subcontractor, and without
         the fault or negligence of either of them, the Supplier will not be
         liable for any excess cost for failure to perform, unless the supplies
         or services to be furnished by the subcontractor were obtainable from
         other sources in sufficient time to permit the Supplier to meet the
         required delivery releases. When Supplier becomes aware of any
         potential force majeure condition as described in this Agreement,
         Supplier shall immediately notify Buyer of the condition and provide
         relevant details.

24.      Changes

         Buyer may at anytime, by a written order and without notice to sureties
         or assignees, suspend performance hereunder, increase or decrease the
         Agreement quantities, or make changes within the general scope of this
         Agreement in any one or more of the following:

         (a)      applicable drawings, designs, or specification;

         (b)      method of shipment or packing, and/or;

         (c)      place and date of delivery;

         (d)      place and date of inspection or acceptance.

         If any such change causes an increase or decrease in the cost of or
         time required for performance of the Agreement, an equitable adjustment
         shall be made in the Agreement price or delivery schedule, or both, and
         the Agreement shall be modified in writing accordingly. No claim by
         Supplier for adjustment hereunder shall be valid unless asserted within
         thirty (30) days from the date of receipt by Supplier of the
         notification of change, provided, however, that such period may be
         extended upon the written approval of Buyer. However, nothing in this
         clause shall excuse Supplier from proceeding with the Agreement as
         changed or amended.

25.      Termination for Default

         (a)      Buyer may, by notice, terminate this Agreement in whole or in
                  part (i) if Supplier fails to deliver goods or services on
                  agreed delivery schedules or any installments thereof strictly
                  within the time specified; (ii) if Supplier fails to replace
                  or correct defective goods or services; (iii) if Supplier
                  fails to comply strictly with any provision of, or repudiates
                  this agreement, or (iv) Supplier defaults under, or any event
                  or condition stated to be a default occurs under, any
                  provision of the Agreement, including these Applied Materials
                  Standard Terms and Conditions of Purchase.

         (b)      In the event of termination pursuant to this Section:

                  (i)      Supplier shall continue to supply any portion of the
                           Items contracted for under this Agreement that are
                           not terminated;

                  (ii)     Supplier shall be liable for additional costs, if
                           any, for the purchase of such similar goods and
                           services to cover such default;

                  (iii)    At Buyer's request Supplier will transfer title and
                           deliver to Buyer (1) any completed goods, (2) any
                           partially completed goods and (3) all unique

                                       -7-

<PAGE>   29

                           materials. Prices for partially completed goods and
                           unique materials so accepted shall be negotiated.
                           However, such prices shall not exceed the Agreement
                           price per item.

         (c)      Buyer's rights and remedies herein or otherwise stated in this
                  Agreement, any Purchase Order, Comprehensive Supplier
                  Agreement or Basic Supplier Agreement are in addition to and
                  shall not limit or preclude resort to any other rights and
                  remedies provided by law or in equity. Termination under this
                  Agreement shall constitute "cancellation" under the Uniform
                  Commercial Code.

26.      Termination for convenience

         (a)      Buyer may terminate, for convenience, work under this
                  Agreement in whole or in part, at any time by written or
                  electronic notice. Upon any such termination Supplier shall,
                  to the extent and at the time specified by Buyer, stop all
                  work on this Agreement, place no further orders hereunder,
                  terminate work outstanding hereunder, assign to Buyer all
                  Supplier's interests under terminated subcontracts and
                  Agreements, settle all claims thereunder after obtaining
                  Buyer's approval, protect all property in which Buyer has or
                  may acquire an interest, and transfer title and make delivery
                  to Buyer of all Items, materials, work in process, or other
                  things held or acquired by Supplier in connection with the
                  terminated portion of this Agreement. Supplier shall proceed
                  promptly to comply with Buyer's directions respecting each of
                  the foregoing without awaiting settlement or payment of its
                  termination claim.

         (b)      Within six (6) months from such termination, Supplier may
                  submit to Buyer its written claim for termination charges, in
                  the form and with supporting data and detail prescribed by
                  Buyer. Failure to submit such claim within the prescribed time
                  frame and with such items shall constitute a waiver of all
                  claims and a release of all Buyer's liability arising out of
                  such termination.

         (c)      The parties may agree upon the amount to be paid Supplier for
                  such termination. If they fail to agree, Buyer shall pay
                  Supplier the amount due for Items delivered prior to
                  termination and in addition thereto but without duplication,
                  shall pay the following amounts:

                  (i)      The contract price for all Items completed in
                           accordance with this Agreement and not previously
                           paid for;

                  (ii)     The actual costs for work in process incurred by
                           Supplier which are properly allocable or
                           apportionable under Generally Accepted Accounting
                           Principles (GAAP) to the terminated portion of this
                           Agreement and a sum constituting a fair and
                           reasonable profit on such costs. The Supplier agrees
                           to keep true, complete, and accurate records in
                           compliance with GAAP for the purpose of determining
                           allocability of Suppliers costs under this agreement.
                           Such records shall contain sufficient detail to
                           permit a determination of the accuracy of the costs;
                           Independent nationally recognized accountants (the
                           "Auditor") designated by Buyer and reasonably
                           acceptable to Supplier shall have the right, at
                           Buyer's expense and upon reasonable notice, to
                           conduct audits of all of the relevant books and
                           records of Supplier in order to determine the
                           accuracy and allocability of costs submitted by
                           Supplier to Buyer under this provision.

                                       -8-

<PAGE>   30

                  (iii)    The reasonable costs of Supplier in making settlement
                           hereunder and in protecting Items to which Buyer has
                           or may acquire an interest.

         (d)      Payments made under subparagraphs (c)(i) and (c)(ii) shall not
                  exceed the aggregate price specified in this Agreement, less
                  payment otherwise made or to be made. Buyer shall have no
                  obligation to pay for Items lost, damaged, stolen or destroyed
                  prior to delivery to Buyer.

         (e)      The foregoing paragraphs (a) to (d) inclusive, shall be
                  applicable only to a termination for Buyer's convenience and
                  shall not affect or impair any right of Buyer to terminate
                  this Agreement for Supplier's default in the performance
                  hereof.

                                       -9-

<PAGE>   31

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A
                                  FIXED PRICING

<TABLE>
<CAPTION>

  PART NO                  PART DESCRIPTION                              UNIT PRICE
  -------                  ----------------                              ----------
 <S>             <C>                                                     <C>

 0010-00744      HE PRESSURE CONTROL (20SCCM) ASSY                       $     [**]

 0010-13150      ASSY, IHC CAMBER D $ SHC (20SCCM)                       $     [**]

 0010-13152      ASSY, IHC CHAMBERD D & SHC (50 SCCM)                    $     [**]

 0010-35404      IHC ASSY, 5200 MCVD CENTURA                             $     [**]

 0010-35650      ASSY, INDEPENDENT HELIUM CONTROL                        $     [**]

 0010-40240      IHC ASSY,5300 W/RSTR                                    $     [**]

 0010-76952      ASSY, IHC CHAMBER A, B, AND C, (50 SCCM)                $     [**]

 0190-18037      ASSEMBLY, DUAL IHC                                      $     [**]

 0224-01921      XDCR, MKS, 0-100 PSI 1/4FVCR 12-32VDC 15P-D 5RA         $     [**]

 0224-42759      XDUCER, PRESSUER -MKS 850 5RA     G223                  $     [**]

 0225-10104      1 TORR VCR MONOMETER                                    $     [**]

 0225-10105      100 TR VCR MONOMETER                                    $     [**]

 0225-33295      XDCR, PRESS 0-10TORR, 1/2 VCR                           $     [**]

 0226-09052      45D BARATRON W/VCR FTG, 10 TORR     10948-1             $     [**]

 0226-10754      EXDCR PRESSURE 0-10TORR, 1/2 VCR     0222-              $     [**]

 0226-40111      TRANSDUCER,THRU TUBE,MKS TYPE 852,F-F,BENDIX            $     [**]

 0226-41024      CABLE METER XDCR 0-100PSI 15PIN-D 27IN.L                $     [**]

 0226-41187      XDCR PRESS 0-100 PSIG 1/4 VCR F/F 13-32VDC 10RA         $     [**]

 0226-41188      METER XDCR 3-1/2 LCD 0-100 PSIG 13-32VDC 15 PIN-D       $     [**]

05-88029-00      CABLE SHLD W/RT ANG CON                                 $     [**]

                                                                         ----------

</TABLE>

                                       -1-

<PAGE>   32

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A
                                  FIXED PRICING

<TABLE>
<CAPTION>

  PART NO                  PART DESCRIPTION                             UNIT PRICE
  -------                  ----------------                             ----------
<S>             <C>                                                     <C>

0620-01022      CABLE ASSY 12 COND 22AWG SHIELDED MUTLI-COLOR           $     [**]

0620-02563      CABLE ASSY SENSOR HEAD - BARATRON                       $     [**]

0690-01954      BRKT SENSOR HEAD MTG                                    $     [**]

1040-01092      METER XDCR 3-1/2LCD 0-60PSI 12-32VCD 15PIN-D            $     [**]

1350-01005      XDCR PRESS 1TORR 8VCO-F +/-15VDC @ 250MA 45C            $     [**]

1350-01011      XDCR PRESS 0-10 TORR VCO D CONNECTOR                    $     [**]

1350-01016      XDCR PRESS 10TORR 8VCO-F +/-15VDC @ 250 MA 45C          $     [**]

1350-01019      XDCR PRESS 0-10TORR 8 VCR WIRE STRIP CONN SP            $     [**]

1350-01021      XDCR PRESS 100MTORR 8VCR-F +/-15VDC @ 250MA 45C         $     [**]

1350-01025      XDCR PRESS 100TORR 8VCR-F +/-14VDC @ 250MA 45C          $     [**]

1350-01035      XDCR PRESS 0-100 TORR VCR D CONN                        $     [**]

1350-01036      XDCR PRESS 0-1 TORR VCR D CONNECTOR                     $     [**]

1350-01045      XDCR PRESS 10TORR 8VCR-F +/-15VDC @ 250MA 45C           $     [**]

1350-01051      XDCR PRESS BARATRON, HEATED 10 TORR                     $     [**]

1350-01052      XDCR PRESS BARATRON, HEATED 100 TORR                    $     [**]

1350-01055      XDCR PRESS 10 TORR CAJON 8 VCR FEMALE FTG .12%          $     [**]

1350-01072      XDCR PRESS 1000TORR 8VCR-F +/-15VDC @ 250MA 45C         $     [**]

                                                                        ----------
</TABLE>

                                       -2-

<PAGE>   33

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A
                                  FIXED PRICING

<TABLE>
<CAPTION>

  PART NO                  PART DESCRIPTION                              UNIT PRICE
  -------                  ----------------                              ----------
 <S>             <C>                                                     <C>

1350-01075       XDCR PRESS 0-100TORR SHRT 8FVCR TERM-STRIP +/-15V       $     [**]

1350-01078       XDCR PRESS 0-250PSIA 1/4VCR-M/M 0-10VDC 6'PIGTAIL       $     [**]

1350-01079       XDCR PRESS 2TORR 8VCR-F +/-15VDC @ 250MA 45DED-C        $     [**]

1350-01083       XDCRPRESS 0-60PSIA 1/4VCR-M 12-32VDC 50DEGC 10RA        $     [**]

1350-01086       XDCR PRESS 0-1000TORR 1/4VCR-M 12-32VDC 50C 10RA        $     [**]

1350-01089       XDCR PRESS 100MTORR 1/8FVCR .25%ACC 100C 15-PDSUB       $     [**]

1350-01092       XDCR PRESS 1TORR 1/2FVCR .12%ACC 45DEG-C 15P-DSUB       $     [**]

1350-01098       XDCR PRESS 1TOR 1/2FVCR .25%ACC 100C 150-DSUB           $     [**]

1350-01101       XDCR PRESS 2-100TORR 1/2VCR-F .5%ACC +/-15VDC           $     [**]

1350-01102       XDCR PRESS 10TORR 8FVCR DCONN +/-15VDC@35MA .93"L       $     [**]

1350-01121       XDCR PRESS 0-20TORR 45C 15VDC 15P D-CONN 1/2"VCO        $     [**]

1350-01143       XDCR PRESS 1TORR RF FLTR 8FVCR +/-15VDC@250MA 45C       $     [**]

1400-01217       SNSR HEAD 1 TORR 1/4VCR W/ THERMAL BLANKER              $     [**]

3030-01050       MFC  1159 50SCCM HE 1/4VCR VITON N/C 15P-DSUB SST       $     [**]

                                                                         ----------

</TABLE>

                                       -3-

<PAGE>   34

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A

                                  FIXED PRICING

<TABLE>
<CAPTION>

  PART NO                  PART DESCRIPTION                              UNIT PRICE
  -------                  ----------------                              ----------
 <S>             <C>                                                     <C>

3030-01172       MFC  1159 20SCCM HE 1/4VCR VITON N/C 9P-DSUB SST        $     [**]

3870-01463       VALVE EXHAUST THROTTLE 1 3/8IDXKF40 W/KEMREZ ORING      $     [**]

3870-02311       VALVE BUTTERFLY THROTTLE W/KF 40 FLANGE                 $     [**]

                                                                         ----------

</TABLE>

                                       -4-

<PAGE>   35

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A

                                 AUSTIN BUSROUTE

<TABLE>
<CAPTION>

 PARTNO                         PARTDESC                                 UNITPRICE
 ------                         --------                                 ---------
 <S>             <C>                                                     <C>

0010-00744       HE PRESSURE CONTROL (20SCCM) ASSY                       $    [**]

0010-13150       ASSY, IHC CHAMBER D $ SHC (20SCCM)                      $    [**]

0010-13152       ASSY, IHC CHAMBER D & SHC (50SCCM)                      $    [**]

0010-35404       IHC ASSY,5200 MCVD CENTURA                              $    [**]

0010-35650       ASSY,INDEPENDENT HELIUM CONTROL                         $    [**]

0010-37643       ASSY,INDEPENDENT HELIUM CONTROL,DPS WOUT/FILTER         $    [**]

0010-40240       ICH ASSY,5300 W/RSTR                                    $    [**]

0010-76952       ASSY, IHC CHAMBER A,B, AND C, (50 SCCM)                 $    [**]

0190-18037       ASSEMBLY, DUAL IHC                                      $    [**]

0620-02211       CABLE ASSY TRANSDUCER 27"LG 15P-D CONN                  $    [**]

1040-01093       METER XDCR 3.1/2 LCD 0-100 PSI 13032VDC 15PIN-D         $    [**]

1350-01012       XDCR PRESS 0-100 TORR VCO D CONNECTION                  $    [**]

1350-01025       XDCR PRESS 100TORR 8VCR-F +/-15VDC @ 250MA 45C          $    [**]

1350-01026       XDCR PRESS 1TORR 8VCR-F +/-15VDC @ 250MA 45C            $    [**]

1350-01027       XDCR PRESS 0-1000 TORR W/FEM #8 VCO D CONN              $    [**]

1350-01028       XDCR PRESS 2-1000 TORR CAJON 8 VCR FEM FTG              $    [**]

1350-01039       XDCR 0-10 TORR CAP MANO 1/2 VCR D-CONN                  $    [**]

1350-01045       XDCR PRESS 10TORR 8VCR-F +/-15VDC @ 250MA 45C           $    [**]

1350-01067       XDCR PRESS 100MTORR 45C 15VDC 8VCR FEM FTG VERTCL       $    [**]

                                                                         ---------

</TABLE>

                                       -5-

<PAGE>   36

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A

                                 AUSTIN BUSROUTE

<TABLE>
<CAPTION>

 PARTNO                         PARTDESC                                 UNITPRICE
 ------                         --------                                 ---------
 <S>             <C>                                                     <C>

1350-01091       XDCR PRESS 100TORR 1/2FVCR .12%ACC 45C 15P-DSUB         $    [**]

1350-01110       XDCR PRESSURE 100TORR 1/2FVCR 15P-DSUB W/OVERPRES       $    [**]

1350-01121       XDCR PRESS 0-20TORR 45C 15VDC 15P D-CONN 1/2" VCO       $    [**]

1350-01124       XDCR PRESS SPEC CALIBRTN 10/100MTORR 1/8FVCR 1%AC       $    [**]

1350-01133       XDCR PRESS 0-100PSI 1/4VCR F/F 15P D 13-32VDC 10RA      $    [**]

1350-01138       XDCR PRESS 0-10TORR 1/2VCR FEMALE 2SET POINTS           $    [**]

1350-01141       XDCR PRESS 0-100TORR 0-10VDC OUT 1/4VCR 1% 9PD          $    [**]

1350-01143       XDCR PRESS 1TORR RF FLTR 8FVCR +/-15VDC@250MA 45C       $    [**]

1350-01212       XDCR PRESS 1TORR 1/2FVCR .12%ACC 45C HORIZ 15P-D        $    [**]

3030-01113       MFC1159 50SCCM HE 1/4VCR VITON N/C 15P-DSUB SST         $    [**]

3030-02284       MFC  1159 2SLM AR 1/4VCR VITON N/C 15P-DSUB SST         $    [**]

3870-02373       VALVE EXH THROT 1-3/9ID X KF40 W/CHMRZ ORING 15P-D      $    [**]

3920-01278       CNTRL PRESS 640 SER 10T 1/4VCR VITON CAJON MALE         $    [**]

                                                                         ---------
</TABLE>

                                       -6-

<PAGE>   37

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A

                              SANTA CLARA BUSROUTE

<TABLE>
<CAPTION>

 PARTNO                         PARTDESC                                 UNITPRICE
 ------                         --------                                 ---------
 <S>             <C>                                                     <C>

0010-37643       ASSY,INDEPENDENT HELIUM CONTROL,DPS WOUT/FILTER         $    [**]

0620-02211       CABLE ASSY TRANSDUCER 27"LG 15P-D CONN                  $    [**]

0720-03620       CONN ADPTR 15P-D TO 9P-HEX 1FT CABLE                    $    [**]

1040-01012       METER SENSOR 0-10VDC 50/60HZMULTI-RANGE                 $    [**]

1040-01092       METER XDCR 3-1/2LCD 0-60PSI 12-32VDC 15PIN-D            $    [**]

1040-01093       METER XDCR 3.1/2 LCD 0-100 PSI 13-32VDC 15PIN-D         $    [**]

1270-01803       SW  PRESS FLOWTHRU -25TORR GUAGE SP 1/4MVCR 9P-D        $    [**]

1350-01012       XDCR PRESS 0-100 TORR VCO D CONNECTOR                   $    [**]

1350-01026       XDCR PRESS 1TORR 8VCR-F +/-15VDC @ 250MA 45C            $    [**]

1350-01027       SDCR PRESS 0-1000 TORR W/FEM #8VCO D CONN               $    [**]

1350-01028       XDCR PRESS 2-1000 TORR CAJON 8 VCR FEM FTG              $    [**]

1350-01035       XDCR PRESS 0-100 TORR VCR D CONN                        $    [**]

1350-01039       XDCR 0-10 TORR CAP MANO 1/2 VCR D-CONNN                 $    [**]

1350-01054       XDCR PRESS 1000MMHG 1/8FVCR .12%ACC 45C W/SET-PT        $    [**]

1350-01055       XDCR PRESS 10 TORR CAJON 8 VCR FEMALE FTG .12%          $    [**]

1350-01067       XDCR PRESS 100MTORR 45C 15VDC 8VCR FEM FTG VERTCL       $    [**]

1350-01068       XDCR PRESS 1--,TPRR 45C 15VDC 9VCR FE, FTG HORIZT       $    [**]

                                                                         ---------
</TABLE>

                                       -7-

<PAGE>   38

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A

                              SANTA CLARA BUSROUTE

<TABLE>
<CAPTION>

 PARTNO                         PARTDESC                                 UNITPRICE
 ------                         --------                                 ---------
 <S>             <C>                                                     <C>

  1350-01090     XDCR PRESS 10TORR 1/8FVCR .25%ACC 100C 15P-DSUB         $    [**]

  1350-01093     XDCR PRESS 1000TORR 1/4FVCR +/-12-32V 0-10VDC 9PD       $    [**]

  1350-01096     XDCR PRESS 10TORR 1/4VCR-F +/-14VDC 15P-D SET-PT        $    [**]

  1350-01097     XDCR PRESS 10-100TORR 1/4VCR-F +/-15VDC 15P-D           $    [**]

  1350-01103     XDCR PRESS 0-60PSIA 1/4VCR-F/F 15D 12-32VDC 10RA        $    [**]

  1350-01124     XDCR PRESS SPEC CALIBRTN 10/100MTORR 1/8FVCR 1%AC       $    [**]

  1350-01131     XDCRPRESS 1000 TORR 1/4VCR 1% 9PIN DSUB                 $    [**]

  1350-01133     XDCR PRESS 0-100PSI 1/4VCR F/F 15P D 13032VDC 10RA      $    [**]

1350-0113893     XDCR PRESS 0-10TORR 1/2VCR FEMALE 2SET POINTS           $    [**]

  1350-01140     XDCR PRESS 10TORR 8VCR-F +/-15VDC @ 35MA 50C            $    [**]

  1350-01163     XDCR PRESS 10-100 TORR 1/4VCR-F +/-15VDC                $    [**]

  3030-01113     MFC1159 50SCCM HE 1/4VCR VITON N/C 15P-DSUB SST         $    [**]

  3030-01172     MFC  1159 20SCCM HE 1/4VCR VITON N/C 9P-DSUB SST        $    [**]

  3870-01470     VALVE THROTTLE TVC 100MM SMART NW50 W/CNTRL HITEMP      $    [**]

  3870-01512     VALVE THROTTLE TVC 50MM SMART NW50 W/CNTRL HI-TEMP      $    [**]

                                                                         ---------

</TABLE>

                                       -8-

<PAGE>   39

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1A

                              SANTA CLARA BUSROUTE

<TABLE>
<CAPTION>

 PARTNO                         PARTDESC                                 UNITPRICE
 ------                         --------                                 ---------
 <S>             <C>                                                     <C>

3870-01817       VALVE EXH THRTL NW160 8.9PDX5.879ID 2CTR-BORE-HOL       $    [**]

3920-01278       CNTRL PRESS 640 SER 107 1/4VCR VITON CAJON MALE         $    [**]

                                                                         ---------

</TABLE>

                                       -9-

<PAGE>   40
          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  ATTACHMENT 1B

                               SERVICE AND REPAIR

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------
   AMAT                                                                               CAL     REBUILD
  PARTNO                 ITEM DESCRIPTION                           MKS PARTNO       PRICE     PRICE
-----------------------------------------------------------------------------------------------------
<S>            <C>                                                  <C>               <C>      <C>

  010-00744    HE PRESSURE CONTROL (20SCCM) ASSY                    121002-G1         [**]      [**]

  010-13150    ASSY, IHC CHAMBER D $ SHC (20SCCM)                   121002-G2         [**]      [**]

011l0-13152    ASSY, IHC CHAMBER D & SHC (50 SCCM)                  1210-02-G4        [**]      [**]

  010-35404    IHC ASSY, 5200 MCVD CENTURA                          202407            [**]      [**]

  010-35650    ASSY, INDEPENDENT HELIUM CONTROL                     202258            [**]      [**]

  010-37643    ASSY, INDEPENDENT HELIUM CONTROL, DPS WOUT/FILTER    120657-G2         [**]      [**]

  010-40240    IHC ASSY, 5300 W/RSTR                                190094-G1         [**]      [**]

  010-76952    ASSY, IHC CHAMBER A, B, AND C 50 SCCM)               121002-G3         [**]      [**]

  190-18037    ASSEMBLY, DUAL IHC                                   202406            [**]      [**]

  224-01921    XDCR, MKS, 0-100 PSI 1/4FVCR 12-32VDC 15P-5RA        852B-13384        [**]      [**]

  224-42759    XDUCER, PRESSURE -MKS 850 5RA G223                   850A-12951        [**]      [**]

  225-10104    1 TORR VCR MONOMETER                                 127A-00001B       [**]      [**]

  225-10105    100 TR VCR MONOMETER                                 127A-00100B       [**]      [**]

  225-33295    XDCR, PRESS 0-10TO44,1/2VCR                          122BA-00010BB     [**]      [**]

  226-09052    45D BARATRON W/VCR FTG, 10 TORR 10948-1              127BA-00010BB     [**]      [**]

  226-10754    EXDCR PRESSURE 0-10TORR, 1/2VC 0222-                 127A-11356        [**]      [**]

  226-40111    TRANSDUCER, THRU TUBE, MKS TYPE 852, F-F, BENDIX     852B61PCJ4GH      [**]      [**]

  226-41024    CABLE METER XDCR O-100PSI 15PIN-D27IN.L              CB852-5-2.5       [**]      [**]

</TABLE>

                                       -1-

<PAGE>   41
          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

<TABLE>
<S>            <C>                                                    <C>               <C>      <C>

 226-41187     XDCR PRESS 0-100 PSIG 1/4 VCR F/F 13-32VDC 10RA        842B12PCJ2GC      [**]     [**]

 226-41188     METER XDCR 3-1/2 LCD 0-100 PSIG 13-32VDC 15 PIN-D      LDM-A12PB2CC1     [**]     [**]

6-88029-00     CABLE SHLD W/RT ANG CON                                CB036-11075       [**]     [**]

 620-01022     CABLE ASSY 12 COND 22AWG SHIELDED MULTI-COLOR          CB036-11016       [**]     [**]

 620-02211     CABLE ASSY TRANSDUCER 27"LG 15P-D CONN                 CB852-5-2.5       [**]     [**]

 620-02563     CABLE ASSY SENSOR HEAD - BARATRON                      CB036-11016       [**]     [**]

 690-01954     BRKT SENSOR HEAD MTG                                                     [**]     [**]

 720-03620     CONN ADPTR 15P-D TO 9P-HEX 1FT CABLE                   CB6551-31-1       [**]     [**]

 040-01012     METER SENSOR 0-10VDC 50/60HZMULTI-RANGE                170M-6C           [**]     [**]

 040-01092     METER XDCR 3-1/2CD 0-60PSI 12-32VDC 15PIN-D            LDM-A61PA2CC1     [**]     [**]

 040-01093     METER XDCR 3.1/2 LCD 0-100 PSI 13-32VDC 15PIN-D        LDM-A12PA2CC1     [**]     [**]

 270-01803     SW PRESS FLOWTHRU -25 TORR GAUGE SP 1/4MVCR 9P-D       42A13DCH2AA025    [**]     [**]

 350-01005     XDCR PRESS 1TORR 8VCO-F +/-15VDC @ 250MA 45C           127A-00001E       [**]     [**]

 350-01011     XDCR PRESS 0-10 TORR VCO D CONNECTOR                   122BA-00010EB     [**]     [**]

 350-01012     XDCR PRESS 0-100 TORR VCO D CONNECTOR                  122BA-0010EB      [**]     [**]

 350-01016     XDCR PRESS 10TORR 8VCO-F +/-15VDC @ 250MA 45C          127AA-00010E      [**]     [**]

 350-01019     XDCR PRESS 0-10 TORR 8 VCR WIRE STRIP CONN SP          122A-116063       [**]     [**]

 350-01021     XDCR PRESS 100MTORR 8VCR-F +/-15VDC @ 250MA 45C        127AA-000.1B      [**]     [**]

 350-01025     XDCR PRESS 100TORR 8VCR-F +/-15VDC @ 250MA 45C         127A-00100B       [**]     [**]

</TABLE>

                                       -2-

<PAGE>   42

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

<TABLE>
<S>            <C>                                                    <C>               <C>      <C>

350-01026      XDCR PRESS 1TORR 8VCR-F +/- 15VDC @ 250MA 45C          127A-00001B       [**]     [**]

350-01027      XDCR PRESS 0-1000 TORR W/FEM #8 VCO D CONN             122BA-0100EB      [**]     [**]

350-01028      XDCR PRESS 2-1000 TORR CAJON 8 VCR FEM FTG             124AA010000BB     [**]     [**]

350-01035      XDCR PRESS 0-100 TORR VCR D CONN                       122BA-00100BB     [**]     [**]

350-01036      XDCR PRESS 0-1 TORR VCR D CONNECTOR                    122BA-00001BB     [**]     [**]

350-01039      XDCR 0-10 TORR CAP MANO1/2VCR D-CONN                   122B-11411        [**]     [**]

350-01045      XDCR PRESS 10TORR 8VCR-F +/-15 VDC @ 250MA 45C         127A-00010B       [**]     [**]

350-01051      XDCR PRESS BARATRON, HEATED 10 TORR                    621C11TBFHC       [**]     [**]

350-01052      XDCR PRESS BARATRON, HEATED 1000 TORR                  621C13TBFH        [**]     [**]

350-01054      XDCR PRESS 1000MMHG 1/8FVCR.12%ACC 45C W/SET-PT        624A13TBC         [**]     [**]

350-01055      XDCR 10 TORR CAJON 8 VCR FEMALE FTC.12%                627A11TBC         [**]     [**]

350-01067      XDCR PRESS 100MTORR 45C 15VDC 8VCR FEM FTG VERTCL      627A.1TBD         [**]     [**]

350-01068      XDCR PRESS 100MTORR 45C 15VDC 8VCR FEM FTG HORIZT      627A-11985        [**]     [**]

350-01072      XDCR PRESS 100OTORR 8VCR-F +/-15VDC @ 250MA 45C        127AA-0100B       [**]     [**]

350-01075      XDCR PRESS 0-100TORR SHRT 8FVCR TERM-STRIP +/-15V      122A-11064        [**]     [**]

350-01078      XDCR PRESS 0-250PSIA 1/4VCR-M/M 0-10VDC 6"PIGTAIL                        [**]     [**]

350-01079      XDCR PRESS 2TORR 8VCR-F +/-15VDC @ 250MA 45DED-C       127AA-00002B      [**]     [**]

350-01083      XDCR PRESS 0-60PSIA 1/4VCR-M 12-32VDC 50DECG 10RA      852B61PCA2NC      [**]     [**]

350-01086      XDCR PRESS 0-1000TORR 1/4 VCR-M12-32VDC 50C 10RA       852BA13TCA2NC     [**]     [**]

</TABLE>

                                       -3-

<PAGE>   43

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

<TABLE>
<S>            <C>                                                    <C>               <C>      <C>

350-01089      XDCR PRESS 100MTORR 1/8FVCR .25%ACC 100C 15P-DSUB      628A.1TBE         [**]     [**]

350-01090      XDCR PRESS 10TORR 1/8FVCR .25%ACC 100C 15P-DSUB        628A12TBC         [**]     [**]

350-01091      XDCR PRESS 100TORR 1/2FVCR .12%ACC 45C 15P-DSUB        627A12TBC         [**]     [**]

350-01092      XDCR PRESS 1TORR 1/2FVCR .12%ACC 45DEG-C 15P-DSUB      627A01TBC         [**]     [**]

350-01093      XDCR PRESS 1000TORR 1/4FVCR +/-12-32V 0-10VDC 9PD      751A-12772        [**]     [**]

350-01096      XDCR PRESS 10TORR 1/4VCR-F +/-15VDC 15P-D SET-PT       R750B11TCD2GC     [**]     [**]

350-01097      XDCR PRESS 10-100TORR 1/RVCR-F +/-15VDC 15P-D          CV7527A-01        [**]     [**]

350-01098      XDCR PRESS 1TOR 1/2FVCR .25%ACC 100C 15P-DSUB          628A01TBE         [**]     [**]

350-01101      XDCR PRESS 2-100TORR 1/2VCR-F .5%ACC +/-15VDC          124AA-00100BB     [**]     [**]

350-01102      XDCR PRESS 10TORR 8FVCR DCONN +/-15VDC@35MA .93"L      122B-12773        [**]     [**]

350-01103      XDCR PRESS 0-60PSIA 1/4VCR-F/F 15D 12-32VDC 15RA       852B61PCJ2GC      [**]     [**]

350-01110      XDCR PRESSURE 100TORR 1/2FVCR 15P-DSUB W/OVERPRE       624A-13092        [**]     [**]

350-01121      XDCR PRESS 0-20TORR 45C 15VDC 15P D-CONN 1/2"VCO       627A-13267        [**]     [**]

350-01124      XDCR PRESS SPEC CALIBRTN 10/100MTORR 1/8FVCR 1%AC      628A-13114        [**]     [**]

350-01131      XDCRPRESS 1000 TORR 1/4VCR 1% SPIN DSUB                750B13TCD2GA      [**]     [**]

350-01133      XDCR PRESS 0-100PSI 1/4VCR F/F 15P D 13-32VDC 10RA     852B12TCJ2GC      [**]     [**]

350-01138      XDCR PRESS 0-10TORR 1/2VCR FEMALE 2SET POINTS          625A-13127        [**]     [**]

350-01140      XDCR PRESS 10TORR 8VCR-F +/-15VDC @ 35MA 50C           626A11TBE         [**]     [**]

</TABLE>

                                       -4-

<PAGE>   44

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

<TABLE>
<S>            <C>                                                    <C>               <C>      <C>

 350-01141     XDCR PRESS 0-100TORR 0-10VDC OUT 1/4VCR 1% 9PD         750B12TCD2GA      [**]     [**]

 350-01143     XDCR PRESS 1TORR RF FLTR 8FVCR +/-15VDC@250MA 45C      127A-13608        [**]     [**]

 350-01163     XDCR PRESS 10-100 TORR 1/4VCR-F +/-15VDC               CV7627A-05        [**]     [**]

 350-01212     XDCR PRESS 1TORR 1/2FVCR .125ACC 45C HORIZ 15P-D       627A-14974        [**]     [**]

 400-01217     SNSR HEAD 1 TORR 1/4VCR W/THERMAL BLANKER                                [**]     [**]

3030-01050     MFC 1159 50SCMM HE 1/4VCR VITON N/C 15P-DSUB SST       1159B-00059SV-S   [**]     [**]

3030-01113     MFC1159 50SCCM HE 1/4VCR VITON N/C 15[-DSUB SST        1159B-00050RV-sp  [**]     [**]

3030-01172     MFC 1159 20SCCM HE 1/4VCR VITON N/C 9[-DSUB SST        1159B-00020RV-S   [**]     [**]

3030-02284     MFC 1159 2SLM AR 1/4VCR VITON N/C 15P-DSUB SST         1159B-02000RV-S   [**]     [**]

3870-01463     VALVE EXHAUST THROTTLE 1 3/8DXKF40 W/KEMREZ ORING      253B-11203        [**]     [**]

3870-01470     VALVE THROTTLE TVC 100MM SMART NW50 W/CINTRL HITEM     153C-1-100-2      [**]     [**]

3870-01512     VALVE THROTTLE TVC 50MM SMART NW50 W/CNTRL HI-TEM      153C-2-50--2      [**]     [**]

3870-01817     VALVE EXH THRTL NW160 8.9ODX5.87691D 2CTR-BORE-HOL     653B-13071        [**]     [**]

3870-02311     VALVE BUTTERFLY THROTTLE W/KF 40 FLANGE                253B-02311        [**]     [**]

3870-02373     VALVE EXH THROT 1-3/81D X KF40 W/CHMRZ ORIGN 15P-D     253B-11203        [**]     [**]

3920-01278     CNTRL PRESS 640 SER 10T 1/4VCR VITON CAJON MALE        640A12TW1V12-S    [**]     [**]

</TABLE>

                                       -5-

<PAGE>   45

                                  ATTACHMENT 2

                             APPLIED MATERIALS, Inc.

                           CORPORATE FISCAL CALENDAR

<TABLE>
<S>                                                      <C>

      M     T     W     T     F     S     S                M     T     W     T     F     S     S
     --------------------------------------               --------------------------------------
WK                              1ST QUARTER                                          3RD QUARTER    WK

     NOVEMBER                                             MAY
 1   27    28    29    30    31     1     2               27    28    29    30     1     2     3    27
 2    3     4     5     6     7     8     9                4     5     6     7     8     9    10    28
 3   10    11    12    13    14    15    16               11    12    13    14    15    16    17    29
 4   17    18    19    20    21    22    23               18    19    20    21    22    23    24    30
 5   24    25    26   [27]  [28]   29    30

     DECEMBER                                             JUNE
 6    1     2     3     4     5     6     7              [25]   26    27    28    29    30    31    31
 7    8     9    10    11    12    13    14                1     2     3     4     5     6     7    32
 8   15    16    17    18    19    20    21                8     9    10    11    12    13    14    33
 9   22    23    24   [25]  /26/   27    28               15    16    17    18    19    20    21    34

     JANUARY                                              JULY
10  /29/  /30/  /31/   [1]   /2/    3     4               22    23    24    25    26    27    28    35
11    5     6     7     8     9    10    11               29    30     1     2    [3]    4     5    36
12   12    13    14    15    16    17    18                6     7     8     9    10    11    12    37
13   19    20    21    22    23    24    25               13    14    15    16    17    18    19    38
                                                          20    21    22    23    24    25    26    39
     --------------------------------------               --------------------------------------
                                2ND QUARTER                                          4TH QUARTER

     FEBRUARY                                             AUGUST
14   26    27    28    29    30    31     1               27    28    29    30    31     1     2    40
15    2     3     4     5     6     7     8                3     4     5     6     7     8     9    41
16    9    10    11    12    13    14    15               10    11    12    13    14    15    16    42
17  [16]   17    18    19    20    21    22               17    18    19    20    21    22    23    43

     MARCH                                                SEPTEMBER
18   23    24    25    26    27    28     1               24    25    26    27    28    29    30    44
19    2     3     4     5     6     7     8               31     1     2     3     4     5     6    45
20    9    10    11    12    13    14    15               [7]    8     9    10    11    12    13    46
21   16    17    18    19    20    21    22               14    15    16    17    18    19    20    47

     APRIL                                                OCTOBER
22   23    24    25    26    27    28    29               21    22    23    24    25    26    27    48
23   30    31     1     2     3     4     5               28    29    30     1     2     3     4    49
24    6     7     8     9    10    11    12                5     6     7     8     9    10    11    50
25   13    14    15    16    17    18    19               12    13    14    15    16    17    18    51
26   20    21    22    23    24    25    26               19    20    21    22    23    24    25    52
     --------------------------------------               --------------------------------------

     [ ] = HOLIDAYS                          / / = SHUTDOWN                          | | = HOLIDAYS
           (US ONLY)                               (US ONLY)                               (AMJ ONLY)

                                      APPLIED MATERIALS CONFIDENTIAL

</TABLE>

<PAGE>   46

                                  ATTACHMENT 3

                               DELIVERY MECHANICS

TYPE 1       PURCHASE ORDER (P.O) RELEASE

         Releases against this Agreement will be made by issuing purchase
         orders. Delivery dates shall refer to dates of receipt at Buyer's
         facility. Seller will not deliver items more than five (5) calendar
         days in advance of Buyer's required delivery dates without prior
         approval.

TYPE 5       JUST-IN-TIME/BUS ROUTE MECHANICS

A.       This Agreement authorizes Seller to create and maintain inventory,
         subject to the terms of this Agreement, for the Bus Route Program in
         accordance to and subject to Article 5 of the Master Purchase Order and
         Sales Agreement. Items to be included in the Bus Route Program are
         found in Attachment 1 of the Master Purchase Order and Sales Agreement.

B.       Buyer will notify Seller of requirements via facsimile or EDI
         transmission. (Requirements may be released twice a day, seven days
         week, no later than 6:00 a.m. and 3:00 p.m.).

C.       Seller will attach all "pick cards" to the requested material prior to
         shipment for easy identification by Buyer.

D.       Seller shall have all items ready for pick up by Buyer's truck within
         three hours of receipt of requirements. Or. Seller can deliver parts to
         Buyer by 9:00 a.m. for morning requirements and 6:00 p.m. for afternoon
         requirements.

E.       If the "pick card" requirement cannot be filled, Seller shall return to
         Buyer the pick card indicating a back order.

F.       For back ordered items Seller will receive a new "pick card" the
         following day which will have "Back Order" written on it. The Seller
         should attach the material to this "pick card" with a red dot which
         identifies the item as a filled back order to the Buyer.

G.       Seller will be paid based on Buyer's CMR Transaction Summary, and in
         accordance with the following, depending on Buyer's Bus Route location:

                  For Austin, Texas Bus Route:

                  THE END DATE OF EACH TRANSACTION WEEK WILL BE USED AS THE
                  INVOICE NUMBER FOR PAYMENT OF AUSTIN BUS ROUTE INVOICES, I.E.
                  FRIDAY, APRIL 1, 1995 WOULD BE INVOICE #040195A.

                  For Santa Clara, California Bus Route:

                  THE PRINT DATE OF THE CMR TRANSACTION SUMMARY DOCUMENT WILL BE
                  USED AS THE INVOICE NUMBER FOR PAYMENT OF SANTA CLARA BUS
                  ROUTE INVOICES, I.E. FRIDAY, APRIL 1, 1995 WOULD BE INVOICE
                  #040195A.

H.       Seller will maintain records of all Items shipped to Buyer to verify
         against Buyer's weekly accumulated usage report which will be faxed to
         Seller each Monday morning.

I.       Buyer will make changes (quantity/price) to the transaction summary of
         discrepancies that occur and are validated. These changes/adjustments
         will be reflected on the transaction summary the following week for
         payment.

                  1.       If discrepancies in pricing or quantity are found,
                           SELLER will modify the report accordingly, and fax
                           the corrected copy to BUYER/PLANNER.

                  2.       If no discrepancies are found, no further action is
                           required by SELLER, and payment will be made
                           accordingly.

J.       Buyer shall make payment to Seller in accordance with the terms
         established in this agreement.

<PAGE>   47

                                  ATTACHMENT 4

                             SUPPLIER RATING SYSTEM
                                PPM CALCULATIONS

WHAT THE HECK IS PPM?

The number of parts rejected or delinquent out of every million parts produced.

     QUALITY

     No. of parts rejected   15
     (incoming & floor)
     Divided by
     No. of parts received  147
                            ---
     x 1,000,000                  0.1020408 x 1,000,000 = 102,041 PPM

     DELIVERY

     No. of parts rec. late  44
     (1 or more days)
     Divided by
     No. of parts received  147
                            ---
     x 1,000,000                  0.2993197 x 1,000,000 = 299,320 PPM

SUPPLIER RATING INDEX (SRI)

     Quality rating + Delivery rating
     Based on 50% Quality & 50% Delivery

     A number derived to establish a multiplier to use when determining the true
     "TOTAL COST" of a part.

     SUPPLIER A                       SUPPLIER B

     $10.000 Quoted Price             $12.00 Quoted Price
     x 1.452 Unsatisfactory           x 1.004 Outstanding
     -------                          -------
     $14.52 TOTAL COST                $12.05 TOTAL COST

SUPPLIER QUALITY INDEX (SQI)          SUPPLIER DELIVERY INDEX (SDI)

     Supplier Quality Performance     Supplier Delivery Performance

C. Lauer

<PAGE>   48
                                  ATTACHMENT 5

                                      AMET
                        DISCREPANT MATERIAL REPORT (DMR)

                          (USE BLACK INK, PRESS HARD)
<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------
<S>           <C>          <C>                  <C>                        <C>
1. BILL NO    2. PREV.    3. DESCRIPTION

---------------------------------------------------------------------------------------------
4. PRODUCT    5. _____    6. WORK ORDER, ACCOUNT, OR WAREHOUSE LOCATION    7. SERIAL NO.

---------------------------------------------------------------------------------------------
8. ORIGINATOR OR PRINT _______                  9. EMPLOYEE NO.                 10.  DATE

---------------------------------------------------------------------------------------------
11. RCA REQUIRED?    12. PAGE     13. ZONE    14. DEFECT CODE    15. QTY REACTED    16. TIME
         YES    NO
---------------------------------------------------------------------------------------------
17. REQUIREMENTS
---------------------------------------------------------------------------------------------

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

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

---------------------------------------------------------------------------------------------
18. DISCREPANCY
---------------------------------------------------------------------------------------------

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

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

---------------------------------------------------------------------------------------------
19. WHEN FAILURE ________
---------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------
20. DISPOSITION    21.      22. _________                                23. HAND EXCHANGE?
                   REJECT
                   CODE                           AMET                        YES   NO
                                                         SUPPLIER
---------------------------------------------------------------------------------------------
LINE AS IS                  24. _________       25. ________ QTY     26. STOCK     27. STOCK
                            28. _________                                CHECK     LOCATION
__________                  31. ___ WORK TIME__                          YES/NO

____ WORK IN HOUSE

QTY
----------------------------------------------------------------------------------------------
                                                29. ______ LOT NO.   30. RTV____

----------------------------------------------------------------------------------------------
                           32. SUPPLIER NAME           33. SUPPLIER NO.
----------------------------------------------------------------------------------------------
34. FLOOR ____ (PRINT & ____)                   33. EMPLOYEE NO.     36. DATE/TIME

----------------------------------------------------------------------------------------------
39. COMMENTS:
----------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------
40. CIRCLE ONE    41.___ CODE    42.___ P.O. 7 ITEM NO.   42. ____ QTY    43. REORDER P.O.____
CONSIGN/DEBIT
----------------------------------------------------------------------------------------------
SHIP VIA:    (1) WILL CALL     (2) COMMON       (3) UPS      (4) FED X   (5) AIR    (7) OTHER

----------------------------------------------------------------------------------------------
SERVICE REQUIRED:    (0) N/A    (1) ONE DAY   (2) OVER NIGHT      (3) ECONOMY     (4) OTHER

----------------------------------------------------------------------------------------------
FREIGHT CHARGES:     (1) PREPAY & BILL        (2) PREPAY & ALLOW    (3) COLLECT   (4) OTHER

----------------------------------------------------------------------------------------------
FOB:       (1) DESTINATION   (2) SHIPPING POINT     (3) FACTORY     (4) OTHER

----------------------------------------------------------------------------------------------
44. ________ NAME        DATE     45. ____ NO.                           46. P.O. DUE DATE

----------------------------------------------------------------------------------------------
47. ________ P.O. SHIP VIA CODE   48. ____ CODE          49. SHIPPING AUTHORIZATION NO.

----------------------------------------------------------------------------------------------
50. ________ AUTHORIZATION COMMENTS:

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

----------------------------------------------------------------------------------------------
51. COMMENTS:
----------------------------------------------------------------------------------------------

----------------------------------------------------------------------------------------------
52. SYSTEM    53. DATED ENTERED    54. ENTERED BY:    55. ACCURATE ____    56. AUDITOR    DATE
                                                          YES          NO
----------------------------------------------------------------------------------------------
</TABLE>

<PAGE>   49
                                  ATTACHMENT 6

                             NONDISCLOSURE AGREEMENT
                             Applied Materials, Inc.

APPLIED MATERIALS, INC., a Delaware corporation (including its subsidiaries,
"Applied"), having its principal offices in Santa Clara, California and MKS
Instruments, Inc., a Massachusetts corporation,("Recipient") having its
principal offices in Andover, Massachusetts, hereby agree as follows:

I.       IDENTIFICATION OF CONFIDENTIAL INFORMATION

         A.       Applied may disclose to Recipient the following types of
                  information: SEE ATTACHMENT 1.

         B.       The information described in A. above shall be deemed
                  "Confidential Information" if:

                  (1) in the case of a written disclosure, Applied affixes to
the document an appropriate legend, such as "Proprietary" or "Confidential", and

                  (2) in the case of an oral or visual disclosure, Applied makes
a contemporaneous oral statement or delivers to Recipient a written statement
within thirty (30) days to the effect that such disclosure is confidential or
the like.

         C.       "Confidential Information" does not include information that:
(1) becomes a matter of public knowledge through no fault of Recipient, (2) is
rightfully received by Recipient from a third party without restriction on
disclosure, (3) is independently developed by Recipient without the use of
Applied's Confidential Information or (4) is in the possession of Recipient
prior to its disclosure by Applied.

         D.       Each party's Nondisclosure Agreement ("NDA") Coordinator serve
as the principal contact for the disclosure or receipt of Confidential
Information. Applied's NDA Coordinator will be MICHAEL BERKLAW and Recipient's
NDA Coordinator will be LEO BERLINGHIERI.

II.      USE OF CONFIDENTIAL INFORMATION

         Recipient shall use the Confidential Information only for the purpose
of (1) determining whether to enter into a transaction with Applied, (2)
purchasing or using products or services supplied by Applied or (3) providing
products or services to Applied. Absent a written agreement to the contrary, all
information generated or derived by Recipient in connection with any such
transaction or provisions of goods or services shall be deemed Confidential
Information for purposes of this Agreement.

III.     RESPONSIBILITIES OF RECIPIENT

         A.       Recipient agrees (1) to disclose Confidential Information only
to those of its employees who have a need to know such information, are informed
of its confidential nature and agree to comply with this Agreement, (2) not to
disclose Confidential Information to any third party, except pursuant to a
lawful judicial, administrative or governmental order after providing Applied an
opportunity to avoid or limit such disclosure, (3) to protect the Confidential
Information with at least the degree of care with which it protects its own
confidential information, but in no case with less than a reasonable degree of
care and (4) to notify Applied promptly of any breach of this Agreement.

         B.       Within thirty (30) days of a written request by Applied,
Recipient shall (1) destroy or return to Applied all documents received from
Applied that contain Confidential Information, all documents it may have created
that reveal or are based on any Confidential Information, and all copies of the
foregoing (except for one copy which may be kept by Recipient's legal department
or outside attorneys for archival purposes only), and (2) deliver to Applied a
certificate stating that Recipient has complied with such requests.

IV.      DISCLOSURE PERIOD AND CONFIDENTIALITY PERIOD

         A.       The period during which Applied may disclose Confidential
Information under this Agreement shall begin on the date of the first disclosure
of Confidential Information (which may be prior to the date of this Agreement)
and shall end on _______ (if no date is specified, the period shall end three
(3) years from the date this Agreement was signed). Either party may terminate
the Agreement by giving the other party ten (10) days' written notice.

         B.       The obligations set forth in Articles II and III shall (1)
termination five (5) years from the date of this Agreement and (2) survive the
termination or expiration of this Agreement.

<PAGE>   50

V.       MISCELLANEOUS

         A.       Recipient shall not acquire intellectual property rights from
Applied other than by a separate written agreement. Nothing in this Agreement
shall be deemed to create any obligation to disclose Confidential Information.
The Confidential Information is accepted "as is" by Recipient without any
warranty of noninfringement or of any other sort by Applied or any of Applied's
agents, advisers, consultants or contractors.

         B.       This Agreement does not create any partnership, joint venture
or agency between the parties.

         C.       Before exporting or reexporting any Confidential Information,
Recipient must comply with all applicable regulations of the U.S. Department of
Commerce Office of Export Administration and/or other applicable agencies.

         D.       This Agreement is the complete and exclusive statement of the
understanding between the parties regarding the subject matter hereof and
supersedes all prior or contemporaneous communications. It may be amended only
by a writing signed by both parties.

         E.       This Agreement shall be interpreted and enforced according to
the laws of the State of California (exclusive conflict of law rules).

APPLIED MATERIALS, INC.                        MKS INSTRUMENTS, INC.
                                               (Print Name of Recipient)

By: /s/ Joe Cestari                            By: /s/ Leo Berlinghieri
    -------------------------------------          -----------------------------
    Name (print) Joe Cestari                       Name (print) Leo Berlinghieri
    Title: Sr. Director-Chemical Delivery          Title: Corporate VP, Customer
           SMO Operations                                  Support

Date: 5/3/96                                   Date: 6/12/96

                                               Please circle one:     Customer
                                                         Supplier     Consultant

<PAGE>   51

                                  Attachment 7

             APPLIED MATERIALS CORPORATE ROUTING GUIDE ATTACHMENT A

TRANSPORTATION AND SHIPPING REQUIREMENTS

Applied Materials Corporate Traffic Department has established excellent pricing
and service programs with various transportation carriers. Using these approved
carrier programs, when Applied Materials is responsible for the freight charges,
will contribute to our freight cost reduction goals while continuing to provide
a high level of customer satisfaction. Everyone has a responsibility to control
and reduce unnecessary expenses.

Requirements for transportation and shipping are as follows:

-        All freight collect shipments to Applied Materials must be routed via
         the appropriate Applied Materials approved carrier, see general routing
         instructions within the United States.

-        An Applied Materials department of division number must be referenced
         on the carrier documentation.

-        All shipments consigned to a third party at the direction of Applied
         Materials and Applied Materials is paying the freight charges must be
         routed by an approved Applied Materials carrier. All shipping
         documentation must indicate billing to third party (Applied Materials).

-        For freight routed prepaid by third party, FOB origin, the third party
         will assume all risk in transit when approved Applied Materials carrier
         is used.

-        Materials must be suitable packaged to withstand normal freight
         handling and movement while in transit.

-        Multiple order shipping by the same carrier and service level, on the
         same day, must be consolidated into one shipment on one carrier
         document.

-        Material for each purchase order must be packaged separately with it's
         own packing list.

-        Packing lists must be attached to the outside surface of the package
         and visible from any position (do not hide from view if multiple
         packages are pelletized).

-        When consolidating multiple purchase orders in one overpack carton, all
         inside orders must be attached to the overpack carton. Overpack carton
         must be clearly label to indicate multiple orders are packed inside.
         Each carton within the overpack must be clearly labeled.

<PAGE>   52

                                  Attachment 7

-        DO NOT DECLARE VALUE or request insurance on any freight collect
         shipment or third party shipments where Applied Materials is paying the
         freight charges unless specifically authorized.

-        Materials must be shipped in time to meet the due date shown on the
         purchase order. Materials will not be accepted/received earlier than
         three (3) days of the due date, unless specifically authorized.
         Materials shipped earlier will be refused and possibly returned at your
         expense.

-        Only use air freight at the requested level of service when
         specifically instructed and authorized in writing by Applied Materials.

-        Suppliers must specifically state or indicate Emergency/Overnight
         service on the airbill or truck bill of lading to ensure expedited
         delivery, and only when instructed and authorized in writing by Applied
         Materials.

-        All shipping documents and package address labels must reference the
         complete purchase order number(s) for the material included in the
         package(s) and shipment. When freight codes are provided they must also
         show on all documents.

-        Any question concerning third party billing or carrier recommendations
         anywhere within the United States should be addressed to Corporate
         Traffic Operations:

              Santa Clara, California                  (408) 235-6053

              Outside Santa Clara, California          Toll Free  1-888-TOO-SHIP
                                                                (1-888-866-7447)

<PAGE>   53

                                  ATTACHMENT 7

                        APPLIED MATERIALS - ROUTING GUIDE

                   GENERAL ROUTING INSTRUCTIONS WITHIN THE US

              COMMON CARRIER (LTL) TRANSPORTATION UP TO 7,500 LBS.

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------------------------------
    WEIGHT             AMAT LOCATION OR SERVICE AREA                             CARRIER
--------------------------------------------------------------------------------------------------------
<S>              <C>                                             <C>
   1-100 lbs.                    All points.                          Federal Expres - Express Saver
--------------------------------------------------------------------------------------------------------
Over 100 lbs.            All interstate shipments.                          CF Motor Freight
--------------------------------------------------------------------------------------------------------
Over 100 lbs.             Intrastate AZ, CA, & OR                         Viking Freight System
--------------------------------------------------------------------------------------------------------
Over 100 lbs.    Intrastate Tx, except Augtin & Dallas area      Federal Express - Express Saver Freight
--------------------------------------------------------------------------------------------------------
    1-50 lbs.               Austin & Dallas area                                Sonic Air
 Over 50 lbs.                                                        Federal Express - Express Saver
--------------------------------------------------------------------------------------------------------
Over 100 lbs.             Intrastate MA, NY, & PA                Federal Express - Express Saver Freight
--------------------------------------------------------------------------------------------------------
</TABLE>

--------------------------------------------------------------------------------
Please provide 48 hour advance notice when your shipment is over 7,500 lbs., or
on shipments that require special equipment. This will enable sufficient tiem to
schedule the carrier that will provide the most economical and timely service.
Contact Corporate Traffic 1-888-TOO-SHIP (866-7447).
--------------------------------------------------------------------------------

<TABLE>
               HIGH VALUE PRODUCTS, AIR RIDE OR PADDED VAN SERVICE
--------------------------------------------------------------------------------
<S>                 <C>
TWI Mayflower       Call traffic (408) 235-6053, for scheduling and transit
                    time details.
--------------------------------------------------------------------------------

<CAPTION>
        NEXT FLIGHT OUT, MESSENGER, AND/OR COURIER SERVICE WITHIN THE US
--------------------------------------------------------------------------------
<S>                 <C>
All weights         Sonic Air call the local office, if no local office call
                    1-800-528-6070
--------------------------------------------------------------------------------

<CAPTION>
                            AIR FREIGHT WITHIN THE US
--------------------------------------------------------------------------------
   WEIGHT                      SERVICE                           CARRIER
--------------------------------------------------------------------------------
<S>             <C>                                          <C>
 1 - 70 lbs.    Priority Overnight - 10:30 AM Next Day
                Priority Overnight - 3:00 PM Next Day        Federal Express
                 Economy Service - 4:30 PM Second Day
--------------------------------------------------------------------------------
Over 70 lbs.    Priority Overnight - 10:30 AM Next Day
                Standard Overnight - 4:00 PM Next Day
                     Two Day - 4:00 PM Second Day         Eagle USA Air Freight
                   Deferred Air - 3-5 day delivery
--------------------------------------------------------------------------------

<CAPTION>
          GENERAL ROUTING INSTRUCTIONS FOR ALL INTERNATIONAL LOCATIONS
--------------------------------------------------------------------------------
   WEIGHT                     SERVICE                            CARRIER
--------------------------------------------------------------------------------
<S>             <C>                                          <C>
 1 - 50 Kgs.                Regular Air                      Federal Express
--------------------------------------------------------------------------------
 All Weights     Next Flight Out or Courier Service     Schencker International*
--------------------------------------------------------------------------------
Over 50 Kgs.        Regular Air or Consolidation
--------------------------------------------------------------------------------

</TABLE>

* Shipments over 50 Kgs. to or from Japan must be routed via Nippon Express.

<PAGE>   54

                                  ATTACHMENT 7

                         TRANSIT TIMES FOR U.S. CARRIERS

SELECT CARRIER BY REFERING TO GUIDANCE PROVIDED ON PAGE ONE. USE TABLE BELOW TO
ENSURE TRANSIT TIME OF SERVICE MEETS DELIVERY REQUIREMENTS.

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------------------------------------------------
 US TIMETABLE         SHIPMENT       SAME-DAY         1 DAY         2 DAYS         3 DAYS        4 DAYS       5 DAYS        6 DAYS
                        SIZE
----------------------------------------------------------------------------------------------------------------------------------
<S>                 <C>            <C>            <C>            <C>           <C>            <C>
Sonicair Courier    All - see f.   Nationwide     Nationwide
Next Flight Out
----------------------------------------------------------------------------------------------------------------------------------
Sonicair Ground     All - see e.   50 miles of
Courier Local                      AMAT
                                   Sites
----------------------------------------------------------------------------------------------------------------------------------
Federal Express     1-100 lbs,                    Up to 350      350 to        Over 1,000
Express Saver       see d.                        miles of       1,000 miles   miles of
                                                  origin         of origin     origin
------------------------------------------------------------------------------------------
Federal Express     Over 151                      Up to 350      350 to        Over 1,000
Express Saver       lbs., see d.                  miles of       1,000 miles   miles of                  Federal Express
Freight                                           origin         of origin     origin           Express Saver Service commitment
------------------------------------------------------------------------------------------                 by 4:30 PM
Viking Freight      Over 100                      All points in  CA to metro   Colorado             or by close of business.
Sys.                lbs.                          CA ex          areas in      Springs, CO
Between CA, AZ,                                   Calexico.      AZ, NV,
OR.                                               Reno, NV       OR,
                                                                 Denver, CO
----------------------------------------------------------------------------------------------------------------------------------
CF Motor Freight    Over 100                                                   AZ, ID,        CO, MT,      IL, IN, KS,   DC, DE,
Between Santa       lbs.                                                       NV, OR,        NM, UT       KY, LA,       FL, GA,
Clara and States                                                               WA                          MI, MN,       LA, MA,
                                                                                                           MO, ND,       MD, ME,
                                                                                                           NE, OH,       MS, NC,
                                                                                                           OK, SD,       NH, NJ,
                                                                                                           TN, WI,       NY, PA,
                                                                                                           WY            RI, SC,
                                                                                                                         TX, VA,
                                                                                                                         VT, WV
----------------------------------------------------------------------------------------------------------------------------------
CF Motor Freight    Over 100                                                   AR, LA,        AL, CO,      AZ, CT,
between Austin      lbs.                                                       NM, OK         FL, GA,      DC, DE,
and States                                                                                    IA, IL,      ID, MA,
                                                                                              IN, KS,      MD, ME,
                                                                                              KY, MI,      MN, MO,
                                                                                              MS, NC,      MT, ND,
                                                                                              SC, UT,      NE, NH,
                                                                                              WI, WY       NJ, NV,
                                                                                                           NY, OH,
                                                                                                           OR, PA,
                                                                                                           RI, SD,
                                                                                                           TN, VA,
                                                                                                           VT, WA,
                                                                                                           MV
----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

a.       General guidelines call 1-888-TOSHIP for additional information.
b.       Viking Freight Systems use for all intrastate California LTL. Can be
         used for Western States Listed.
c.       Express Saver Freight Program should be used for all appropriate
         non-local intra Texas shipments.
d.       Express Saver program should be used for appropriate packages under 100
         lbs.
e.       Sonic Ground Courier Service can be used for sameday shipments in local
         area of AMAT sites in Santa Clara, Milpitas, Austin, Dallas, Phoenix,
         and Boston.
f.       Next Flight Out service is used for extremely urgent shipments. Check
         with carrier for delivery commitment. Consider Federal Express or Eagle
         if commitment is after 10:30 AM next day.

<PAGE>   55

                                  Attachment 8

                              Intentionally Omitted

<PAGE>   56

                                  Attachment 9

                              Intentionally Omitted

<PAGE>   57

                                  ATTACHMENT 10

                         Applied Materials Incorporated

                              PRELIMINARY QNRR FORM

SUPPLIER NAME: _________________________________  DATE: ________________________

P/N: ___________________________________________  SQE: _________________________

================================================================================
QNRR Number:
                                               _________________________________

================================================================================
Levels:  Please check one                      1.       Critical  [ ]
                                               2.       Major     [ ]
See Page 3 of 3 for level descriptions         3.       Minor     [ ]
================================================================================
Brief Description:

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

================================================================================
*  This QNR requires corrective action         1.  CA Approved:  [ ];
   (CA).  Please return this form with             Applied Materials must sign
   signature to within ________ working            page 2 of 3 to confirm
   days.                                           approval.

                                               2.  CA Disapproved: [ ];
                                                   Explain below

                                                   Applied Materials Explain
                                                   Briefly:
*  Applied Materials to review CA and           ________________________________
   Approve or Disapprove based on fact.         ________________________________
   Applied Materials must inform supplier       ________________________________
   by returning this form with status           ________________________________
   checked and explained within fourteen        ________________________________
   working days.                                ________________________________

================================================================================

<PAGE>   58

================================================================================
CA to correct Discrepancy:  Explain

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

================================================================================
Preventative Measures Described:

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

================================================================================
Scheduled Completion Date:                 _____________________________________

Supplier Signature:                        _____________________________________

Applied Materials Approval Signature:      _____________________________________

================================================================================

<PAGE>   59

                                  ATTACHMENT 10

                         Applied Materials Incorporated

                           LEVELS OF CORRECTIVE ACTION

LEVEL                                   NATURE
-----                                   ------

1.    CRITICAL                          HAZARDOUS TO HUMAN SAFETY; OR VITAL TO
                                        FUNCTIONALITY OF END PRODUCT THUS NON-
                                        CONFORMANCE IN MEETING THE REQUIRED
                                        SPECIFICATIONS AND CONTRACTUAL
                                        AGREEMENTS. EXAMPLES: IMPROPER HEAT
                                        TREATEMENT OF CERAMIC MECHNICAL MOTOR
                                        MECHANISM, INOPERATIVE BRAKING SYSTEM,
                                        EXPLOSIVE COMPONENTS, ETC.

2.    MAJOR                             A NON-CONFORMANCE RELATED TO THE
                                        REQUIRED FUNCTIONALITY SPECIFICATIONS
                                        AND/OR NON-CONFORMANCE TO CONTRACTUAL
                                        AGREEMENTS. EXAMPLES: CHEMICAL
                                        REACTION (RUST), INOPERATIVE MECHANISM,
                                        PCBAS.

3.    MINOR                             A NON-CONFORMANCE TO THE FUNCTIONALITY
                                        OF PARTS/MECHANISMS WHICH ARE NOT
                                        SHOW STOPPERS. EXAMPLES: CHEMICAL
                                        REACTION (RUST), DENTS, SCRATCHES, LOOSE
                                        HINGE.

<PAGE>   60

                                  ATTACHMENT 12

<TABLE>
<S>                          <C>                     <C>                                               <C>
-----------------------------------------------------------------------------------------------------------------------------------
  Applied Materials                                  ENGINEERING CHANGE NOTICE                         ECN No.
     COMMODITY:
-----------------------------------------------------------------------------------------------------------------------------------
                             MODEL No.    CHARGE No.   CONTRACT No.       PROGRAM NAME                      Sheet 1 of
                             ------------------------------------------------------------------------------------------------------
                                                                                          ECN             CLASS
--------------------------------------------------------------------------------------            ---------------------------------
DATA ENTRY REQUIRED             REASON FOR CHANGE      ECP No.             Requester      TYPE    I [ ]      II [ ]   RCD [ ]
-----------------------------------------------------------------------------------------------------------------------------------
Doc [ ]   Bom [ ]   Part [ ]                                                             Routine  Incorporate
-----------------------------                          -----------------------------------------
DATA ENTRY REQUIRED                                    Customer Approval     Date         Urgent  Changes by
-----------------------------                          -----------------------------------------  ---------------------------------
Doc [ ]   Bom [ ]   Part [ ]                                                           Emergency
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                        Parts Disposition Codes
                                                                           --------------------------------------------------------
           DOCUMENT(S) AFFECTED                       PART(S) AFFECTED     1.       Use part as is (no action)

                                                                           2.       Rework part/build to change

                                                                           3.       Scrap part (do not use)

                                                                           4.       See special instruction
-----------------------------------------------------------------------------------------------------------------------------------
                                                      Change
                                                      Effectivity
Document   Current    New    L/U             Part     (S/N, Qty,
Number     Rev        Rev    Rev    TITLE    Number   Dates)               FP/RR             OPEN (OP)       Comp (CP) Cloased (CL)
-----------------------------------------------------------------------------------------------------------------------------------
                                                                           Not Started   In Kitting  10 Mfg.  In Stock    Shipped
-----------------------------------------------------------------------------------------------------------------------------------

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

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

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

===================================================================================================================================

DESCRIPTION OF CHANGE

-----------------------------------------------------------------------------------------------------------------------------------
                    Project Engineer    Date    Mfg. Engineer   Date   Production Control    Date    ECN Checked by            Date
                    ---------------------------------------------------------------------------------------------------------------

REQUIRED                                                                                             ------------------------------
                                                                                                     Incorporated by           Date
                    ---------------------------------------------------------------------------------------------------------------
APPROVALS           Quality Engineer    Date    Configuration   Date   Program Manager       Date
                                                                                                     Incorporation ck'd by     Date
                                                                                                     ------------------------------

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

</TABLE>

<PAGE>   61

                                  ATTACHMENT 13

APPLIED MATERIALS                               SUPPLIER PROBLEM SHEET  95-0957

--------------------------------------------------------------------------------
Date         Vendor                        Originator              Telephone No.

--------------------------------------------------------------------------------
Part Number                                Part Description

--------------------------------------------------------------------------------
Contract/Spot Buy  (circle one)            Purchase Order No.

--------------------------------------------------------------------------------
                                     PROBLEM
--------------------------------------------------------------------------------

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

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

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

--------------------------------------------------------------------------------
                                 APPLIED ACTION
--------------------------------------------------------------------------------

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

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

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

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

--------------------------------------------------------------------------------
PROBLEM     NAME                           DATE                       RETURN
WILL BE                                                            RESPONSE TO
RESOLVED                                                            ORIGINATOR
BY:                                                                 WITHIN 24
                                                                      HOURS
--------------------------------------------------------------------------------

<PAGE>   62

                                  Attachment 14

                              Intentionally Omitted

<PAGE>   63

                                  Attachment 15

                              Intentionally Omitted

<PAGE>   64

                                  Attachment 16

                           CERTIFICATE OF CONFORMANCE

"I certify that on _________________________ the ____________________ furnished
the supplies or services called for under the Applied Materials' Purchase
Contract Number ________________________________ via _______________________ on
________________________________________________________ in accordance with all
applicable requirements. I further certify that the supplies or services are of
the quality specified and conform in all respects with the contract
requirements, including specifications, drawings, preservation, packaging,
packing, marking requirements and physical item identification (part number),
and are in the quantity shown on this or on the attached acceptance document."

Date of Execution:

Signature:

Name & Title:

********************************************

Instructions:

The _____ signed certificate shall be attached to or included on the top copy of
the inspection or receiving report provided to Applied Materials ar the time of
delivery. In addition, a copy of the signed completed certificate shall also be
maintained at the ______ facility and will be made available to Applied
Materials' representatives upon request.

<PAGE>   65

          Confidential Materials omitted and filed separately with the
        Securities and Exchange Commission. Asterisks denote omissions.

                                  Attachment 17

                                [**] CALCULATION

                                      [**]

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00023-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00023-of-00352.parquet"}]]