Hygrade supplies carbon filters as a stand-alone single stage unit, or as a polishing stage downstream of chemical scrubbers or bio-filters. Available with an extensive range of carbon media, the filters suit many applications, including volatile organic compounds (VOCs) or acid gases, such as hydrogen sulphide, mercaptans and chlorine.

A range of designs created in-house is available; including deep bed, twin bed and annular bed, depending on gas flow and inlet contaminant load.