or
Solid Phase Extraction Products; Thermo Scientific; HyperSep; SCX; SPE Column; 10g Bed Weight; 75mL Column Volume; 40-60um Particle Size; 60angstrom Pore Size; Trifunctional Benzene Sulfonic Acid, 0.32 mEq/g, H+ counterion; Cation Exchange; 10/Pk