Welchrom PSA

Welchrom® PSA is an adsorbent similar to NH2. PSA has two amino groups with pKa of 10.1 and 10.9, respectively. It has stronger ion exchange capacity than NH2 SPE column and is generally used in anion exchange retention mode. The average particle size of silica gel matrix is 45μm, the pore diameter is 60Å, the pore volume is 0.80cm3/g, and the specific surface area is 480m2/g.