CHASKA, Minn.--(BUSINESS WIRE)--Sept. 28, 2005--Entegris, Inc. (Nasdaq:ENTG) today announced that it will release its fourth quarter and fiscal year 2005 financial results prior to the opening of the market on Wednesday, October 12, 2005. A teleconference with management is scheduled for the same day at 9:00 a.m. Eastern Time (ET). Entegris is the global market leader in materials integrity management for the semiconductor and other high tech industries.

To participate, please call one of the following numbers and ask for the "Entegris Conference Call," using passcode 3159842: 800-289-0572 (domestic); 913-981-5543 (international). Participants are asked to dial in 5 to 10 minutes prior to the start of the call.

A replay of the call will be available starting October 12, 2005 at 12:00 p.m. (ET) until Wednesday, October 26, 2005. The replay can be accessed once it is made available by dialing 888-203-1112 and using conference code: 3159842.

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 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 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:
Steven Cantor, 978-436-6750
irelations@entegris.com

SOURCE: Entegris, Inc.