

ResinTech SIR-350 is a sodium form macroporous chelating weak acid cation resin. Its unique chelating functionality removes divalent transition metals preferentially to alkaline earth metals such as calcium. It has a higher capacity than SIR-300. Since the sodium form is highly alkaline, pH adjustment is usually required before first use. SIR-350 is intended for the removal of low to moderate concentrations of heavy metals from waste streams.