POZ300 an Anionic Organoclay (Surface Modified Zeolite {SMZ}).  POZ300 is used to remove anionic compounds.

Anionic compounds also known as anions are negatively charged ions.  The surface of the POZ300 forms a surfactant bilayer which attracts ionic species.  POZ300 targets compounds such as phosphates, cyanides, nitrates, sulfates, and tannins.