Quaternary amine strong base anion exchange functionality chemically bonded to a spherical silica substrate. Unique functionalization process produces material with high functional ligand density and stability over wide pH range.


substrate:                        spherical silica

particle size:                   30 µm

porosity:                         300Å

surface area:                   80-90 m2 /g

total capacity:                >350 µeq / g QMA-Silica

quaternary capacity:      >55 µeq / g QMA-Silica

pH stability:                    2-9