Shim-pack GIST PFPP is ideal for highly polar basic compounds as it shows strong rentention for this analytes. It exhibits excellent stability in high aqueous eluent and is suitable for LCMS analysis. This column has end-capping, a carbon load of 10%, a pore sizer of 10nm, surface area of 350 m2/g, and a pH range of 2 - 7.5. USP L43.