SPE polypropylene column CHROMABOND® HR-XA, 500 mg

SPE-PP columns CHROMABOND®HR-XA 3 ml vol., absorbent weight 500 mg Quat. ammonium modified spherical polystyrene/divinylbenzene copolymer, strong anion exchanger (mixed-mode) Pore size: 55-65 Å, particle size: 85 µm Spec. surface: 850 m2/g, pH-stability: 1-14 Pore volume: 1,4 cm3/g Exchange capacity: approx. 0,25 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 acidic analytes. Recommended applications: acidic active ingredients from strongly matrix contaminated samples like e.g. urine, plasma, serum, phenolic acids, acidic herbicides Similar phases: Oasis® MAX, HyperSepTM Retain AX, Styre Screen® QAX, StrataTM-X-A