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Waters Corporation Responds to Infringement Complaint

MILFORD, Mass.--(BUSINESS WIRE)--Feb. 24, 2000--Waters Corporation (NYSE:WAT, Waters, or the Company) was informed yesterday that a complaint has been filed in US District Court against its subsidiaries Micromass UK Limited and Micromass, Inc. (Micromass) by PE Corporation, MDS Inc. and Perkin-Elmer Sciex Instruments, a joint venture of PE Corporation and MDS Inc. The complaint alleges that certain Micromass mass spectrometry products infringe US Patent No. 4,963,736. Micromass and Waters believe that they do not infringe any valid claims of the aforementioned patent. Although the outcome of this matter is not certain, the Company believes that it will not have a material adverse effect.

Waters Corporation holds worldwide leading positions in three complementary analytical technologies - high performance liquid chromatography, thermal analysis and mass spectrometry - which account for $3.5 billion in annual revenues of the $16 billion analytical instrument industry total.


Certain statements contained herein are forward looking, and are subject to a variety of risks and uncertainties that are inherent in any legal proceeding. Such risks and uncertainties could cause the actual results to differ materially from those expressed in, or suggested by, such forward looking statements.

     CONTACT:  Waters Corporation
               Philip S. Taymor