CHROMABOND SPE Columns, HR-XCW, 60mg, 3mL, 45µm, 50-60Å Weak carboxylic acid modified polymeric cation exchanger for SPE
Features:
Base material spherical PS/DVB copolymer, pore size 50–60 Å, particle sizes 45 µm or 85 µm (standard),
very large specific surface 850 m2/g, pore volume 1.2–1.4 cm3/g, pH stability 1–14
weak carboxylic acid modification, exchange capacity > 0.7 meq/g, pKa ~ 5
RP capacity 350 mg/g (caffeine in water)
high-purity material, highest reproducibility and lowest blank values due to an optimized production process
outstanding recovery rates especially for the enrichment of basic analytes
Recommended application:
basic compounds like quaternary amines
Basic active ingredients from strongly matrix-contaminated samples like, e.g., urine, plasma, serum
Strong bases with pKa > 10
