SPE polypropylene column CHROMABOND® HR-XCW, 500 mg

SPE-PP columns CHROMABOND®HR-XCW 3 ml vol., absorbent weight 500 mg Carboxylic acid modified spherical polystyrene/divinylbenzene copolymer, weak acidic cation exchanger (mixed-mode) Pore size: 50-60 Å, particle size: 85 µm Spec. surface: 850 m2/g, pH stability: 1-14 Pore volume: 1,2-1,4 cm3/g Exchange capacity: >0,7 meq/g RP capacity: 350 mg/g (caffeine in water) Please note: high-purity material with homogenous surface and optimised pore structure - due to optimised production process - enables lowest blanks, outstanding recovery rates and highest reproducibility. Especially for the enrichment of basic analytes. Recommended applications: Active ingredients from strongly matrix contaminated samples like e.g. urine, plasma, serum, strong bases with pKa >10. Basic compounds like quaternary amines. Similar phases: Oasis® WCX, StrataTM-X-CW