... (L x D): 10" x 2" 2) Main ingredient: ceramic filter with sintered carbon block inside ,can remove most of the bactria ... it drink them with the tap water.2. The activated carbon block, contained in the inner part of the ceramic filter, holds ... , faecal coliforms, staphylococcus, cryptosporidium, etc., because resources in hyper-solid ceramic filters, is 10 times smaller than the size of microbes ...