SPE column, CHROMABOND HR-XC, 45 µm, 3 mL/200 mg

State-of-the-art spherical polymer for highest demands in solid phase extraction. PS/DVB copolymer with benzenesulfonic acid modification for mixed-mode SPE with strong cation exchange and reversed-phase properties (MCX). Exchange capacity 1.0 meq/g, pKa < 1 and RP capacity 300 mg/g (caffeine in water). High-purity material with ideal flow properties and highest reproducibility. Allows highest reproducibility with extremely low blind values due to an optimized production process. Outstanding recovery rates especially for the enrichment of basic (bases with pKa 2–10) analytes.