WALTHAM, Mass.–As required under the indenture covering Apogent Technologies Inc. Floating Rate Convertible Senior Debentures due 2033 (CUSIP No. 03760AAK7), Thermo Fisher Scientific Inc. (NYSE: TMO) is providing public notice to the holders of these bonds that they have the right to convert the debentures.

The debentures are convertible because Thermo Fisher stock traded above the minimum price specified in the indenture over the applicable measurement period. The debentures continue to be convertible until April 3, 2010, and may be convertible thereafter, depending on whether or not one of the conversion conditions specified in the indenture is satisfied during future measurement periods. If conversion requests are received, Thermo Fisher has the right to decide if settlement of the debentures will be paid in cash, or a combination of cash and shares of its common stock.

Thermo Fisher Scientific assumed the Apogent Technologies debentures as part of its acquisition of Fisher Scientific International Inc. (“Fisher”) in 2006. Fisher acquired Apogent in 2004. The Bank of New York Mellon is the trustee for the debentures. All questions relating to the mechanics of the conversion for the debentures should be directed to Vaneta Bernard at The Bank of New York Mellon, 617-536-3292.

About Thermo Fisher Scientific

Thermo Fisher Scientific Inc. (NYSE: TMO) is the world leader in serving science, enabling our customers to make the world healthier, cleaner and safer. With 2008 revenues of $10.5 billion, we have approximately 34,000 employees and serve over 350,000 customers within pharmaceutical and biotech companies, hospitals and clinical diagnostic labs, universities, research institutions and government agencies, as well as environmental and industrial process control settings. Serving customers through two premier brands, Thermo Scientific and Fisher Scientific, we help solve analytical challenges from routine testing to complex research and discovery. Thermo Scientific offers customers a complete range of high-end analytical instruments as well as laboratory equipment, software, services, consumables and reagents to enable integrated laboratory workflow solutions. Fisher Scientific provides a complete portfolio of laboratory equipment, chemicals, supplies and services used in healthcare, scientific research, safety and education. Together, we offer the most convenient purchasing options to customers and continuously advance our technologies to accelerate the pace of scientific discovery, enhance value for customers and fuel growth for shareholders and employees alike. Visit www.thermofisher.com.