| http://www.w3.org/ns/prov#value | - Stage 1 - 1 micron filter pads to remove suspended particles, silt, sediment, cysts, cryptosporidium and giardia Stage 2 - granulated activated carbon (GAC) cartridge, an effective absorbent for a wide variety of organic contaminants such as volatile organic compounds (VOCs), chemicals linked to cancer (THMs, benzene), pesticides, herbicides, PCBs.
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