Michael Woelk Joins Picarro as President and CEO

Sunnyvale, CA, November 13, 2007 – Picarro, a leading manufacturer of high-performance trace gas analyzers, today announced that Michael Woelk has joined the company as president and chief executive officer. Previously, he served as vice president of marketing at Varian, Inc., overseeing the company’s scientific instrument business. Mr. Woelk will replace Bill Gignac, who will remain with the company.

“I am extremely excited to join Picarro as I believe the company has a tremendous opportunity for growth in the vast scientific instruments and process control markets,” said Mr. Woelk. “Picarro has developed a series of ultra-high performance analyzers based on technology that has the potential to solve many real-world problems for customers around the globe. I look forward to working with the talented team of professionals at Picarro to continue to build upon the company’s success and to extend its leadership position in the market.”

“Picarro is experiencing significant growth as its groundbreaking technology is rapidly gaining acceptance in the industry,” said Alex Balkanski, general partner at Benchmark Capital and a member of Picarro’s Board of Directors. “The Board is extremely pleased to have someone of Michael’s caliber join the company. With his proven record in building, growing and leading companies in the scientific instrument industry, Michael will be able to guide the company through its next stage.”

About Picarro

Picarro’s instruments set new standards for sensitivity, speed, selectivity and ease-of-use in trace gas detection, which enables customers to achieve dramatic improvements in measurement precision, reliability and cost of ownership. The company serves the needs of customers across a diverse range of markets. For more information, contact [email protected] or visit www.picaro.com.

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