ResinTech SIR-200 is a hydrogen form macroporous mercury selective weakly acidic cation resin. SIR-200 has unique functionality that makes it selective for mercury and other heavy metals. SIR-200 is also very selective for noble metals when present as cations. SIR-200 is intended for mercury removal and for removal/recovery of various precious metals. SIR-200 is supplied in the hydrogen form.