Weak basic secondary and tertiary ammonium anion exchanger, exchange capacity >0.5 meq/g, pKa~ 6, base material spherical PS/DVB copolymer, pH stability 1–14
Spherical particles, size 45 μm and 85 μm (standard), pore size 50–60 Å very large specific surface 850 m2/g, pore volume 1.2–1.4 cm3/g, RP capacity 350 g/g (caffeine in water)
