HERCULES, Calif., May 29, 2008 – Bio-Rad Laboratories, Inc. (AMEX: BIO and BIOb), a multinational manufacturer and distributor of life science research and clinical diagnostic products, today announced the availability of a technical bulletin (number 5574A) that proves Bio-Rad’s Bio-Scale™ Mini Profinity™ cartridges offer comparable or better yield and purity to other commercially available prepacked affinity columns. The study was performed using Bio-Rad’s Profinia™ protein purification system.