Everpure EV9601-00 4C Cartridge Everpure's unique filter blend using activated carbon reduces chlorine taste, odor and other contaminants Precoat submicron technology reduces dirt and particles as small as 1/2 micron in size Reduces possible health contaminants such as asbestos fibers and Cryptosporidium and Giardia cysts Sanitary cartridge replacement is simple, quick and clean NSF certified under 42 and 53