April 22, 2013

ATMI Offers Helium Integrity Testing System in Point of Use Format for Validation of Single- Use Bags and Assemblies Customers Can Now Use This Proven Technology On-Site to Detect Defects as Small as 10um

DANBURY, Conn., April 22, 2013 (GLOBE NEWSWIRE) -- ATMI, Inc. (Nasdaq:ATMI), a global technology company and leader
in single-use bioprocess solutions, today announced that its proprietary helium integrity testing (HIT™) system has been mad available to end-users for on-site application. Originally introduced in 2011 as add-on testing for ATMI bioprocess vessels and manifolds, the HIT system is now also available in an easy-to-use technical transfer format that end-users can apply to
standard and custom disposable bags and 3-D single-use assemblies starting from 300 Liters, with plans for application up to
1,200 Liters. The new offer is part of ATMI's initiative to promote the advancement of quality and standardization in the single- use industry. ATMI will exhibit an HIT system and feature the technology behind it in presentations held from April 23rd--25th during INTERPHEX trade show in New York, NY at the ATMI LifeSciences booth #3319.
"Though many of our customers liked the idea of executing integrity testing with the HIT system on their products prior to shipping, their ultimate desire was to be able to test single-use bags and manifolds at the point of use," offered Director of Applications for ATMI LifeSciences, Richard Bhella. "In other cases, we found that companies who were not yet ATMI customers wanted access to this level of technology and testing. As these requests continued to come in, we reconfigured the format to enable application at the customer sites just prior to process use. We fully advocate open advancement in the single-use industry, so this is a step we are happy to take."
The HIT system offers a much more sensitive level of testing than standard pressure decay testing, and provides the ability to test the whole assembly rather than just the bag body. During the test, the single-use bag assembly or manifold is placed in a closed test chamber, a vacuum pump removes all the air in the chamber, and then a measured quantity of helium is injected
into the assembly. Any helium leakage is measured by a mass spectrometer and the size of any defect is calculated. The test is capable of detecting defects as small as 10µm, which is smaller than the threshold defect size for microbial ingress under
typical bioprocess conditions.
"This type of testing is the most advanced of its kind and addresses a real quality gap in the market," commented Senior Vice
President and General Manager of ATMI LifeSciences, Mario Philips. "Drug products accrue value at an exponential rate as
they move downstream, with batch costs reaching into the millions of dollars. Batch failure due to leakage or sterility breach can represent great financial loss and, as the reliance on single-use technologies has grown in the bioprocess industry, the need to guarantee their integrity has also grown. This technology transfer for on-site customer use is about giving customers access to innovative solutions in a format that fits their specific needs."
The new, innovative HIT platform is currently available for purchase. All transactions come with support from dedicated ATMI application specialists who also scale the technology to individual customer needs. For customers that do not wish to acquire the technology for on-site use, ATMI continues to offer integrity testing with the HIT system as an add-on test for ATMI vessels and systems.
To learn more about the HIT system, please visit ATMI at booth #3319 during INTERPHEX, or email Richard Bhella directly at rbhella@atmi.com.

About ATMI

ATMI, Inc. provides specialty semiconductor materials, and safe, high-purity materials handling and delivery solutions designed to increase process efficiencies for the global semiconductor, flat panel, and life sciences industries. For more information, please visit www.atmi.com.

About ATMI LifeSciences

ATMI LifeSciences is an acknowledged technology leader in the field of single-use bioprocess systems and consumables for the pharmaceutical and biopharmaceutical industries. Its innovative, market-leading portfolio of custom-engineered, flexible
packaging solutions, single-use storage systems, mixers and bioreactors is driving bioprocess efficiency and delivering value for biopharmaceutical companies around the world. For more information, please visit www.atmi-lifesciences.com.
ATMI, the ATMI logo, Integrity and HIT are trademarks, or registered trademarks, of Advanced Technology Materials, Inc., in the United States, other countries or both.

Forward-Looking Statements

Statements contained herein that relate to ATMI's future performance, including, without limitation, statements with respect to ATMI's anticipated results of operations or level of business for 2013 or any other future period, are forward-looking statements within the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements are based on current expectations only and are subject to certain risks, uncertainties, and assumptions, including, but not limited to, changes in semiconductor and life sciences industry growth (including, without limitation, wafer starts) or ATMI's markets; competition, problems, or delays developing, commercializing, and delivering new products; customer-driven pricing pressure; potential loss of key customers; problems or delays in integrating acquired operations and businesses; uncertainty in the credit and financial markets; ability to protect ATMI's proprietary technology; and other factors described in ATMI's Form 10-K for the year ended December 31, 2012 and other subsequent filings with the Securities and Exchange Commission. Such risks and uncertainties may cause actual results to differ materially from those expressed in our forward-looking statements. ATMI undertakes no obligation to update any forward-looking statements.

CONTACT: ATMI Contact: Troy Dewar

Director of Investor Relations

203.207.9349 tdewar@atmi.com

Media Contact: Beth Willers Impress Labs

415.846.9891 beth@impresslabs.com


Source: ATMI, Inc.
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