Bio-Rad to Report Fourth Quarter 2004 Financial Results Thursday, February 17, 2005 HERCULES, Calif., Feb. 10 /PRNewswire-FirstCall/ -- Bio-Rad Laboratories, Inc. (Amex: BIO; BIOb) will report financial results for the fourth quarter 2004 on Thursday, February 17, 2005, 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 800-901-5217 (in the U.S.), or 617-786-2964 (international), access number 43140553. 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 58162472 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. (http://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 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 expectations. DATASOURCE: Bio-Rad Laboratories, Inc. CONTACT: Christine Tsingos, Chief Financial Officer, or Ron Hutton, Treasurer, +1-510-724-7000, or , both of Bio-Rad Laboratories, Inc. Web site: http://www.bio-rad.com/

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