Entegris Announces Live Web Cast of Upcoming Investor Conference

    Business Editors
    7th Annual Needham Growth Conference

    CHASKA, Minn.--(BUSINESS WIRE)--Jan. 5, 2005--Entegris, Inc. (Nasdaq:ENTG), the leader in materials integrity management, today announced that it would provide a live audio Web cast of its investor presentation at the Seventh Annual Needham & Company Growth Conference on January 12, 2005 at 4:30 PM Eastern in New York City.
    The live Web cast and the replay can be accessed from Entegris' Web site at www.entegris.com. A replay of the Web cast will be available for two weeks.

    ABOUT ENTEGRIS

    Entegris products and services protect and transport the critical materials enabling the world's leading technologies. As a leading materials integrity management company, Entegris provides products and services used in key technology industries including the semiconductor, data storage, chemical processing, biopharmaceutical, medical device and fuel cell. Entegris is ISO 9001 certified and has manufacturing or service facilities in the United States, France, Germany, Japan, Malaysia and Singapore. The company's advanced research laboratories are located in Minnesota and Colorado, USA. Directly and through distributors, Entegris provides customer support on six continents. Additional information can be found at: http://www.entegris.com

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CONTACT: Entegris, Inc., Chaska Public Relations: Bill Paterson, 952-556-4155 bill_paterson@entegris.com or Investor Relations: Heide Erickson, 952-556-8051 heide_erickson@entegris.com

KEYWORD: MINNESOTA NEW YORK TRACK INDUSTRY KEYWORD: CHEMICALS/PLASTICS HARDWARE SOFTWARE MEDICAL DEVICES BIOTECHNOLOGY TRADESHOW CONFERENCE CALLS SOURCE: Entegris, Inc.

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