Polymeric mixed-gel packed column for organic SEC (GPC) analysis over a wide range of molecular weight. Base material is styrene divinylbenzene, fulfills USP L21 requirements. Target molecular weight range: 1,000-40,000,000 Da. Shipping solvent is DMF (dimethylformamide) and can be replaced with other organic solvents including THF, chloroform, toluene, and hexane. 10,000A pore size, exclusion limit 40,000,000 Da. Guard column KD-G 4A recommended, part number 220-91524-09 with coupler 220-91524-97.