CHASKA, Minn.--(BUSINESS WIRE)--April 13, 2006--Entegris, Inc. (Nasdaq:ENTG) will release its financial results for the first quarter of fiscal 2006, which ended April 1, 2006, prior to the opening of the market on Tuesday, May 9, 2006. A teleconference with management is scheduled for the same day at 10:00 a.m. Eastern Time (ET). Entegris is the global market leader in providing technology, products and services that purify, protect and transport critical materials used primarily for the semiconductor and microelectronics industries.

To participate, please call one of the following numbers and ask for the "Entegris Conference Call," using passcode 4645400: (800) 811-0667 (domestic); (913) 981-4901 (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 May 9, 2006 at 1:00 p.m. (ET) until Tuesday, May 23, 2006. The replay can be accessed by dialing (888) 203-1112 and using conference code: 4645400.

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

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

    SOURCE: Entegris, Inc.