ASTeX Announces New Chief FinancialOfficer.

WOBURN, Mass.--(BUSINESS WIRE)--Nov. 19, 1999--

Applied Science and Technology, Inc. ("ASTeX") (Nasdaq:ASTX) today announced the appointment of William S. Hurley as Senior Vice President and Chief Financial Officer.

Dr. Richard S. Post, president and chief executive officer,

commented, "We are extremely pleased to have Bill join the ASTeX team. Bill brings to us thirty years of accounting and financial experience in public accounting, high-tech firms, and large public companies. During his career, Bill has functioned as a Certified Public Accountant (CPA) with Price Waterhouse, as VP-Controller and Treasurer at Wyman-Gordan Company, and VP-Controller and Chief Accounting Officer at the former BBN Corporation. Most recently, Bill was VP and CFO at Cybex International, Inc. Bill has a BS in Accounting from Boston College, an MBA in Finance from Columbia University, and attended the Advanced Management Program at Harvard. Additionally, Bill is a CPA in both New York and Massachusetts. Our former CFO, John Tarrh, will assume the position of Vice President and Treasurer."

John Tarrh commented, "I'm delighted to be able to work with someone of Bill's caliber. His training, experience, management abilities, and leadership skills will contribute significantly to our future success. I look forward to being able to spend more of my time with analysts and investors."

Bill Hurley commented, "This is an outstanding opportunity for me to join a leading technology company with tremendous potential. I look forward to working with the ASTeX team to meet the challenges of rapid global growth."

ASTeX provides precision reactive gas solutions and power sources to the OEM semiconductor, medical, and industrial markets, and complete process systems for advanced packaging and magnetic sensor applications. ASTeX's broad product line is based on a decade of leadership in core technologies including reactive gas processing, specialized power sources, and system integration. Depending on customers' needs, ASTeX provides varying levels of integration, from components to subsystems to complete process solutions. ASTeX helps customers maximize their competitive advantage by improving time to market while reducing costs and complexity. For more information, visit the ASTeX web site at www.astex.com.

"Safe Harbor" statement under the Private Securities Litigation Reform Act of 1995:

This release contains forward-looking statements that are subject to risks and uncertainties, including, but not limited to, the impact of industry business cycles, competitive products and pricing, product demand and market acceptance, new product development, reliance on key strategic alliances, general economic conditions, availability of raw materials, fluctuations in operating results, and other risks detailed from time to time in our filings with the Securities and Exchange Commission.