CHASKA, Minn.--(BUSINESS WIRE)--Feb. 6, 2006--Entegris, Inc. (Nasdaq:ENTG), the global market leader in materials integrity management in the semiconductor and other high tech industries, today announced that it completed the sale of the assets of its gas delivery product line to Celerity for $15.6 million in cash. Celerity is a privately held, California-based supplier of gas and chemical delivery systems.

The gas delivery product line includes gas mass flow controllers, vacuum gauges, pressure transducers, and other components used in the manufacturing of semiconductors and other electronics. As part of the transaction, Entegris is transferring its manufacturing facility in Allen, Texas and gas delivery service centers in Shanghai and Taiwan to Celerity.

This step completes the Company's previously announced plan to divest three non-core product lines. In December 2005, Entegris completed the sale of the two smallest of these product lines, its ESC stainless steel clean-in-place equipment for life science applications and its tape-and-reel product line.

"The sale of the gas delivery product line marks an important strategic step as we continue to unlock the value of Entegris and to enhance our operating results. With the divestiture program behind us, we are working to capitalize on growth opportunities," said Gideon Argov, president and CEO of Entegris. "In doing so, we will leverage our core materials integrity management products and technologies to solve the industry's most challenging contamination control issues and help improve our customers' yields."

ABOUT CELERITY

Celerity, headquartered in Milpitas, California, is a global leader in the design and production of high-performance gas and chemical delivery process modules and critical instruments that are integral to the equipment used in manufacturing semiconductors, flat panel displays, and related products. For additional information, please visit www.celerity.net.

ABOUT ENTEGRIS

Entegris is the global leader in materials integrity management - purifying, protecting and transporting critical materials used in high technology products, processes and services. Entegris and Mykrolis completed their merger to create the new Entegris in August 2005. The merged Company delivers technology, product and service solutions to the semiconductor and other high-tech industries. Entegris is ISO 9001 certified and has manufacturing, customer service and/or research facilities in the United States, China, France, Germany, Japan, Malaysia, Singapore, South Korea and Taiwan. Additional information can be found at www.entegris.com.

    CONTACT: Entegris, Inc., Chaska
             Investor Relations:
             Steve Cantor, 978-436-6750
             irelations@entegris.com
             or
             Public Relations:
             Bill Paterson, 952-556-4155
             bill_paterson@entegris.com

    SOURCE: Entegris, Inc.