Zygo Corporation Earnings Release and Conference Call Information

Market Wire, April, 2009

Zygo Corporation (NASDAQ: ZIGO) -- ZYGO's fiscal 2009 third-quarter financial results will be distributed at 4 p.m. Eastern Time on Thursday, April 30, 2009. A conference call reviewing these results has been scheduled for 6 p.m. Eastern Time that same evening. The dial-in number for this call is 800-917-9985. The call will be webcast at www.zygo.com for 30 days following the call.

Zygo Corporation is a worldwide supplier of optical metrology instruments, precision optics, and electro-optical design and manufacturing services, serving customers in the semiconductor capital equipment and industrial markets.

Forward-Looking Statements

All statements other than statements of historical fact included in this news release regarding financial performance, condition and operations, and the business strategy, plans, anticipated sales, orders, market acceptance, growth rates, market opportunities, and objectives of management of the Company for future operations are forward-looking statements. Forward-looking statements are intended to provide management's current expectations or plans for the future operating and financial performance of the Company based upon information currently available and assumptions currently believed to be valid. Forward-looking statements can be identified by the use of words such as "anticipate," "believe," "estimate," "expect," "intend," "plans," "strategy," "project," and other words of similar meaning in connection with a discussion of future operating or financial performance. Actual results could differ materially from those contemplated by the forward-looking statements as a result of certain factors. Among the important factors that could cause actual events to differ materially from those in the forward-looking statements are fluctuations in capital spending of our customers; fluctuations in net sales to our major customer; manufacturing and supplier risks; risks of order cancellations or pushouts; dependence on timing and market acceptance of new product development; rapid technological and market change; risks in international operations; dependence on proprietary technology and key personnel; length of the sales cycle; environmental regulations; investment portfolio returns; fluctuations in our stock price and the risk that anticipated growth opportunities may be smaller than anticipated or may not be realized. Zygo Corporation undertakes no obligation to publicly update or revise forward-looking statements to reflect events or circumstances after the date of this news release. Further information on potential factors that could affect Zygo Corporation's business is described in our reports on file with the Securities and Exchange Commission, including our Form 10-K for the fiscal year ended June 30, 2008, as amended by our Form 10-K/A filed with the Securities and Exchange Commission on October 27, 2008.

For Further Information Call: Walter A. Shephard Vice President Finance, CFO, and Treasurer Voice: 860-704-3955 Email Contact