FA225 Strong Base Anion Gel, Type II


FA225 is an industrial grade, polystyrenic, gel, type II strong base anion exchange resin supplied in the Cl form and OH form.
FA225 has high capacity, high chemical efficiency and good resistance to fouling. FA225 is intended for use in the chloride form for removal of contaminants such as nitrate, arsenate, chromate, uranium, etc., as well as in the hydroxide form for all types of deionizing systems.

FA225-OH is especially well suited for use for systems where amine odors might be objectionable.


  • Industrial demineralization when regenerated with alkalis
  • Trace Contaminant, Sulfate, Nitrate Removal
  • Chloride dealkalization


FA225 Strong Base Anion Resin Gel
Polymer StructureGel polystyrene crosslinked with DVB
Functional GroupQuatemary Amine, Type II
Ionic FormCl- / OH-
AppearanceSpherical Beads
Particle Size (mm)0.315-1.25 ≥95%
Note: Other particle size ranges are also available.
Uniformity Coefficient1.6 max.
Moisture Content40-48%
Total Capacity (eq/l)1.30 min.
Shipping Weight (g/l)690 / 670
Specific Density (g/ml)1.06
Reversible Swelling, Cl-→OH-15% max.
pH Range0-14
Temperature Limit85℃ max. / 35℃ max.

If you are interested in our FA225 resin.