... Cartridge use limit:200 litres or 90 days (depending on water quality). Characteristics:Removal of chlorinerust, worms, algae and other suspended ... of residual chlorine;Highly efficiently removes heavy metal ions in water such as Pb2+, Cd2+, Cr6+, As3+, etc.Decreasing the ... concentration of oranic pollutants and F-,Hg+,MH3,N02-,in water.Micro-organisms groeth and reproduction can be inhibited and ...