Thermo Scientific BioBasic SEC columns are available in fourpore sizes and are ideal for molecularweight determination of peptides, proteinsand water soluble polymers. They can also be used for sample clean-up priorto analysis. BioBasic SEC columns, designedto elute proteins with high recoveries, canbe used for direct automated analysis ofserum or urine samples. BioBasic SECcolumns, based on silica with a proprietarypolymeric coating, offer the mechanical stability of silica-based size exclusioncolumns with higher efficiencies than thatof polymer-based columns