CHASKA, Minn.--(BUSINESS WIRE)--March 3, 2005--Entegris, Inc. (Nasdaq:ENTG), a leader in materials integrity management, today announced that it expects to release its second quarter fiscal 2005 financials prior to its conference call on Thursday, March 17, 2005. The teleconference to discuss second quarter financial performance is scheduled for the same day at 8:30 a.m. Eastern Time (ET).

Participants should call 800-811-0667 prior to the 8:30 a.m. (ET) start time and provide the conference code 9949047 to secure a guaranteed line. Investors are encouraged to register for the call by e-mail at irelations@entegris.com or by phone at 952-556-8080.

Interested parties who are not available for the teleconference will have access to a replay of the call starting Thursday, March 17, 2005 at 10:30 a.m. (ET) until midnight Thursday, March 24, 2005. The replay will be accessible by dialing 888-203-1112, conference code 9949047.

The call will also be available in "listen-only" mode from the Entegris Web site. Point your web browser to www.entegris.com/investors and follow the link to the web cast. The RealAudio^™ on-demand playback will be available for 14 days after the conclusion of the teleconference on the Entegris Web site.

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, Germany, Japan, Malaysia and Singapore. Its 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 www.entegris.com

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

SOURCE: Entegris, Inc.