CHROMABOND® HR-XA is a strong quaternary ammonium modified polymeric anion exchanger for SPE.
- Base material: Spherical PS/DVB copolymer with a large specific surface and a high pH stability of 1 to 14
- Anion exchange capacity 0,25 meg/g
- Outstanding recovery rates especially for acidic analytes
The strong polymeric anion exchanger is recommended for acidic active compounds (phenolic acids, acidic herbicides, acids with pKa 2 to 8) from strongly matrix-contaminated samples like urine, plasma, or serum.