Photo Release -- R. Nicholas Burns Joins Entegris' Board

BILLERICA, Ma., June 2, 2011 (GLOBE NEWSWIRE) -- Entegris, Inc. (Nasdaq:ENTG), a
leading supplier of products and components used in semiconductor manufacturing
and other demanding technology production environments, announced that former
U.S. Ambassador R. Nicholas Burns has joined the Company's Board of Directors.

A photo accompanying this release is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=9782

"I am extraordinarily pleased to have Nick Burns join our Board," said Gideon
Argov, president and CEO of Entegris. "We anticipate benefiting from his
considerable experience and unique global perspective gained over his
illustrious career. This perspective will be invaluable given the global
footprint of our customers, many of which rank among the world's largest
technology companies."

Nicholas Burns is currently Professor of the Practice of Diplomacy and
International Politics at Harvard University's Kennedy School of Government. He
serves on the Board of Directors of the Kennedy's School's Belfer Center for
Science and International Affairs.

In addition, he currently is Director of the Aspen Strategy Group and Senior
Counselor at the Cohen Group, and serves on the Advisory Board for Veracity
Worldwide.

Nicholas Burns served in the United States Foreign Service for twenty-seven
years until his retirement in April 2008. He was Under Secretary of State for
Political Affairs (2005 to 2008), was U.S. Ambassador to NATO (2001 to 2005),
and served as U.S. Ambassador to Greece (1997 to 2001). Prior to that,
Ambassador Burns served as State Department Spokesman for Secretaries of State
Madeleine Albright and Warren Christopher (1995 to 1997), and served five years
at the White House as a member of the National Security Council staff on Soviet
and then Russian affairs.

Burns holds a BA in History from Boston College and a MA in International
Relations from the Johns Hopkins School of Advanced International Studies.

ABOUT ENTEGRIS

Entegris provides a wide range of products for purifying, protecting and
transporting critical materials used in processing and manufacturing in
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, Israel, Japan, Malaysia, Singapore, South Korea and
Taiwan. Additional information can be found at www.entegris.com.

The photo is also available via AP PhotoExpress

CONTACT: Steven Cantor
VP of Corporate Relations
T 978 436 6750
irelations@entegris.com