or
Solid Phase Extraction Products; Thermo Scientific; HyperSep; SCX; SPE Column; 500mg Bed Weight; 3mL Column Volume; 40-60um Particle Size; 60angstrom Pore Size; Trifunctional Benzene Sulfonic Acid, 0.32mEq/g, H+ counterion; Cation Exchange; 50/Pk
