HERCULES, Calif., – July 28, 2008 – Bio-Rad Laboratories, Inc. (AMEX: BIO and BIOb), a multinational manufacturer and distributor of life science research and clinical diagnostic products, announced today the availability of a bulletin (number 5726A) that gives an overview of preprogrammed methods for the purification of Protein A and Protein G antibodies using the Bio-Rad Profinia™ protein purification system.