Strong quat. ammonium modified polymeric anion exchanger for SPE Features Base material spherical PS/DVB copolymer, pore size 55–65 Å, particle sizes 45 µm or 85 µm (standard) very large specific surface 850 m2/g, pore volume 1.4 cm3/g, pH stability 1–14 quaternary ammonium modification, exchange capacity 0.25 meq/g, pKa ~ 18 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 acidic analytes Recommended application: acidic active ingredients from strongly matrix-contaminated samples like, e.g., urine, plasma, serum phenolic acids acidic herbicides acids with pKa 2–8
- UPC:
- 41115709
- Condition:
- New
- Availability:
- 3 Days
- Weight:
- 1.00 Ounces
- HazmatClass:
- No
- WeightUOM:
- LB
- MPN:
- 730727
