... 2)Product Origin: China 3)Brand Name: Lanjiang ceramic water filter cartridge: Model No.SZ5"X53Testing reportZheJiang Provincial Center for Disease Control ... of washingUsually every month(depends on the water quality)FunctionRemove dust, rust, cyst, cryptosporidium, guardian, particle and sediment contaminants. Remove ... E.Coli, fecal coli form, salmonella, streptococcus. ceramic water filter cartridge