A method and system are provided for high-precision separation of pharmaceutical or biotechnology liquids. The separation can be in accordance with direct flow filtration, tangential flow filtration or preparative chromatography. Movement of the pharmaceutical or biotechnology liquid within a flow path...http://www.google.com/patents/US7410587?utm_source=gb-gplus-sharePatent US7410587 - Liquid handling for filtration and preparative chromatography
