Waters Corporation and Prosolia, Inc. Announce Collaboration

Firms to Develop DESI Source that is Compatible with Waters Mass Spectrometers

Indianapolis, IN, (February 8, 2007) – Waters Corporation (NYSE:WAT) and Prosolia, Inc. announced today a collaboration to develop models of Prosolia’s Omni Spray™ Ion Source that are compatible with Waters mass spectrometers.

The Prosolia Omni Spray™ Ion Source brings the novel technique, desorption electrospray ionization (DESI), to the laboratory. DESI is a simple, sensitive, gentle, and versatile ionization method, which allows for the direct sampling of surfaces without any sample preparation and under ambient temperature and pressure conditions. This technique is effective for not only small molecules but also large molecules, such as peptides and proteins. The Omni Spray™ Ion Source has applications in drug discovery, in situ analysis of biological tissues and other fragile surfaces, as well as in homeland security and environmental monitoring.

“We are delighted with the opportunity to work with Waters in making DESI available for their instruments,” stated Kevin Boscacci, President of Prosolia. “Our development time will be cut in half by having Waters support.”

The initial effort will be to develop an Omni Spray™ Ion Source for the Waters LCT Premier™ XE. This instrument is the market-leading orthogonal acceleration time-of-flight (oa-TOF) benchtop mass spectrometer. The LCT Premier™ XE is an easy-to-use bench top platform with a range of powerful and innovative technologies that provide an unbeatable level of sensitivity, specificity and flexibility in compound identification.

The LCT Premier XE's high sensitivity Z-Spray™ API interface, ion transfer optics and TOF analyzer provides the most sensitive benchtop oa-TOF instrument in its class, giving capability of detecting very low level components with full spectral information. “The versatility of the LCT Premier™ XE makes it a perfect platform for developing the DESI source compatible with Waters mass spectrometers,” said Michael P. Balogh, Principal Scientist at Waters.

Said Mr. Boscacci, “Once the design is completed for the LCT Premier™ XE we will quickly adapt the source for other Waters mass spectrometers.”

This new model of Omni Spray™ Ion Source will be introduced at the 55th ASMS Conference on Mass Spectrometry being held in Indianapolis on June 3-7, 2007.

About Prosolia, Inc. (www.prosolia.com)
Prosolia, Inc. was founded in 2003 to commercialize revolutionary analytical chemistry technologies, developed in the laboratory of Prof. R. Graham Cooks at Purdue University, which enhance and expand the use of mass spectrometry. The company’s first product line, Omni Spray™ Ion Source, was introduced in November 2005 and utilizes the novel atmospheric pressure ionization technique, desorption electrospray ionization (DESI). The company has laboratories in Indianapolis and West Lafayette, Indiana and is funded in part by the Indiana 21st Century Research & Technology Fund.

About Waters Corporation
Waters Corporation holds worldwide leading positions in three complementary analytical technologies - liquid chromatography, mass spectrometry and thermal analysis. These markets account for approximately $5.0 billion of the overall $20 - $25 billion analytical instrument market.

Prosolia Media Contact:
John F. Graves III
Business Manager
+1 317-278-6136
graves@prosolia.com

Waters Media Contact:
Brian J. Murphy
Corporate Communications
+1 508-482-2614
brian_j_murphy@waters.com