PHILADELPHIA, PA - SEPT 28 - Bio-Rad Laboratories, Inc. (AMEX: BIO; BIOb) announced today a series of web seminars October through December of 2005 on spectroscopy, in silico lead optimization, ADME/Tox, and free software for teaching chemistry. Registration for these seminars is offered free of charge at
http://bio-radevents.webex.com. Topics are as follows.

Spectroscopy

• Using Multiple Spectral Techniques to Optimize Spectral Search Results
• Steps to Creating a Company Resource for NMR, MS, IR, or Raman Data
• Basic & Advanced Search Strategies for Infrared

ADME/Tox & Medicinal Chemistry

• In Silico ADME Tox Prediction for Multiple Properties with Higher Accuracy
• MedChem Tools for In Silico Lead Optimization, Enumeration of Libraries, Spectral Analysis, Data Management
• Building Predictive Models for CYP Inhibition, hERG channel blocking, and ADME/Tox properties

Teaching Chemistry

• Free Chemistry & Spectroscopy Software Tools to Help Students in General, Organic, and Analytical Chemistry

Each seminar runs for about 30 minutes and is followed by a Q&A session. You can view abstracts and sign up at http://bio-radevents.webex.com/

About Bio-Rad Laboratories, Informatics Division:

Bio-Rad's Informatics Division (http://www.informatics.bio-rad.com) specializes in state-of-the-art software and database solutions for the pharmaceutical, biotech and chemical industries. Bio-Rad is the leading publisher of fully verified spectral databases, cheminformatics, spectroscopy software, and decision support systems for drug discovery. The company's award-winning KnowItAll Informatics System offers a fully integrated environment with flexible, expandable software and database solutions for spectroscopy (MS, NMR, IR, Raman, and spectral data management), cheminformatics, and ADME/Tox prediction.

Bio-Rad Laboratories, Inc. (http://www.bio-rad.com) is a multinational manufacturer and distributor of life science research, clinical diagnostics, and informatics products. 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.

For more information, contact:
Name: Deborah Kernan
Phone: +1 (215) 349-7366
E-mail: Deborah_Kernan@bio-rad.com