Exhibit 10.22 THIRD AMENDMENT THIRD AMENDMENT (this "Amendment"), dated as of September 14, 2000, among Waters Corporation ("Holdings"), Waters Technologies Corporation (the "Borrower"), the lenders listed on the signature pages hereof (the "Banks"), and Bankers Trust Company, as Agent (in such capacity, the "Agent"). All capitalized terms used herein and not otherwise defined herein shall have the respective meanings provided for such terms in the Credit Agreement referred to below. W I T N E S S E T H: WHEREAS, Holdings, the Borrower, the Banks of the Credit Agreement and the Agent are parties to a Credit Agreement, dated as of November 22, 1995 and amended and restated as of June 16, 1997 ( as further amended, modified and supplemented to date, the "Credit Agreement"); and WHEREAS, the parties hereto wish to amend the Credit Agreement as herein provided; NOW, THEREFORE, it is agreed: 1. Section 8.05(z) of the Credit Agreement is hereby amended by (i) deleting the text "$35,000,000" appearing therein and (ii) inserting the text "$100,000,000" in lieu thereof. 2. In order to induce the Banks to enter into this Amendment, each of Holdings and the Borrower hereby represents and warrants that (i) the representations, warranties and agreements contained in Section 6 of the Credit Agreement are true and correct in all material respects on the Third Amendment Effective Date (as defined in Section 6 of this Amendment after giving effect thereto) both before and after giving effect to the Amendment with the same effect as though such representations and warranties had been made on and as of the Third Amendment Effective Date (it being understood and agreed that any representation or warranty which by its terms is made as of a specified date shall be required to be true and correct in all material respects only as of such specified date) and (ii) there exists no Default or Event of Default on the Third Amendment Effective Date, both before and after giving effect to this Amendment. 3. This Amendment is limited as specified and shall not constitute a modification, acceptance or waiver of any other provision of the Credit Agreement or any other Credit Document. 4. This Amendment may be executed in any number of counterparts and by the different parties hereto on separate counterparts, each of which counterparts when executed and delivered shall be an original, but all of which shall together constitute one and the same instrument. A complete set of counterparts shall be lodged with the Borrower and the Agent. 5. THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK. 6. This Amendment shall become effective on the date (the "Third Amendment Effective Date") when each of Holdings, the Borrower and the Required Banks shall have signed a counterpart hereof (whether the same or different counterparts) and shall have delivered (including by way of facsimile transmission) the same to the Agent at its address for notice provided for in the Credit Agreement; * * * -2- IN WITNESS WHEREOF, each of the parties hereto has caused a counterpart of this Amendment to be duly executed and delivered as of the date first above written. WATERS CORPORATION By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO WATERS TECHNOLOGIES CORPORATION By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO WATERS FRANCE HOLDING CORP. By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO WATERS INVESTMENTS LIMITED By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO NIHON WATERS LIMITED By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO WFE HOLDING, INC. By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO WATERS ASIA LIMITED By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO WATERS OPERATING CORP. By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO T.A. INSTRUMENTS, INC. By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO WATERS OPERATING COMPANY, L.L.C. By /s/ Philip S. Taymor ------------------------------------ Title: Senior Vice President and CFO BANKERS TRUST COMPANY, Individually, as Agent and as Collateral Agent By /s/ Mary Kay Cole ------------------------------------ Title: Managing Director FLEET BANK, N.A. CREDIT INDUSTRIEL ET COMMERCIAL ABN AMRO BANK N.V. THE BANK OF NEW YORK THE BANK OF NOVA SCOTIA BANK OF SCOTLAND THE BANK OF TOKYO-MITSUBISHI TRUST COMPANY CREDIT AGRICOLE INDOSUEZ THE SAKURA BANK, LIMITED, NEW YORK BRANCH WACHOVIA BANK, N.A. FUJI BANK, LIMITED GENERAL ELECTRIC CAPITAL CORPORATION THE INDUSTRIAL BANK OF JAPAN MELLON BANK, N.A. THE MITSUI TRUST & BANKING CO., LTD. ALLIED IRISH BANKS, P.L.C., NEW YORK BRANCH CITIZENS BANK OF MASSACHUSETTS THE ROYAL BANK OF SCOTLAND, PLC. USTRUST