HERCULES, CA and TARRYTOWN, NY -- (MARKET WIRE) -- January 31, 2007 -- Bio-Rad Laboratories, Inc. (AMEX: BIO) (AMEX: BIOb), a multinational manufacturer and distributor of life science research and clinical diagnostics products, and Siemens Medical Solutions Diagnostics, a wholly owned subsidiary of Siemens Medical Solutions USA, Inc., today announced a joint marketing agreement under which Bio-Rad will provide its quality control products and Unity™ QC data management solutions for use on Siemens Diagnostics’ ADVIA® Chemistry and ADVIA Centaur® Immunoassay Systems. The combination of the quality control products and data management solutions will help ensure Siemens Diagnostics customers of the reliability and precision of their clinical laboratory test systems.