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                                                                    Exhibit 99.2

                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
                       AS ADOPTED PURSUANT TO SECTION 906
                        OF THE SARBANES-OXLEY ACT OF 2002

          In connection with the Quarterly Report of Waters Corporation (the
"Company") on Form 10-Q for the period ending September 30, 2002 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), I,
John Ornell, Chief Financial Officer of the Company, certify, pursuant to 18
U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that: (1) the Report fully complies with the requirements of
Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) the
information contained in the Report fairly presents, in all material respects,
the financial condition and results of operations of the Company.

                                      /s/ John Ornell
                                      ---------------
                                      John Ornell
                                      Vice President, Finance and Administration
                                      and Chief Financial Officer

