Bio-Rad Laboratories, Inc. To Report Fourth Quarter 2005 Financial Results Thursday, February 16, 2006

HERCULES, Calif., Feb. 1 /PRNewswire-FirstCall/ -- Bio-Rad Laboratories, Inc. , a multinational manufacturer and distributor of life science research products and clinical diagnostics, will report financial results for the fourth quarter 2005 on Thursday, February 16, 2006, after the close of the market. The company will discuss these results in a conference call scheduled for 2:00 p.m. PT (5:00 p.m. ET) that day.

Interested parties can access the call by dialing 866-825-3209 (in the U.S.), or 617-213-8061 (international), access number 61793659. The live web cast can be accessed at http://www.bio-rad.com . A replay of the call will be available at 888-286-8010 (in the U.S.), or 617-801-6888 (international), access number 98718856 for seven days following the call and the web cast can be accessed at http://www.bio-rad.com for 30 days.

Bio-Rad Laboratories, Inc. (www.bio-rad.com) is a multinational manufacturer and distributor of life science research products and clinical diagnostics. It is based in Hercules, California, and serves more than 70,000 research and industry customers worldwide through a network of more than 30 wholly owned subsidiary offices.

Various statements made within this press release may constitute “forward- looking statements” for the purposes of the Securities and Exchange Commission’s “safe harbor” provisions under the Private Securities Litigation Reform Act of 1995 and Rule 3b-6 under the Securities Exchange Act of 1934. The forward-looking statements contained herein involve risks and uncertainties that could cause results to differ materially from the Company’s expectation.

Bio-Rad Laboratories, Inc.

CONTACT: Christine Tsingos, Vice President and Chief Financial Officer, orRon Hutton, Treasurer, +1-510-724-7000, or investor_relations@bio-rad.com,both of Bio-Rad Laboratories, Inc.

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