Std Flip top Repl Filter for 24 and 28oz. It removes up to 99.99% of contaminants and pollutants found in fresh water supplies including Aesthetics such as chlorine, Sediment and dirt; Biologicals such as Giardia, Cryptosporidium, E-Coli Bacteria; Chemicals (VOC's) such as DDT, MTBE, Benzene, Chloroforms (THM's); and Dissolved Solids (Heavy metals) such as Arsenic, Lead, Mercury, Copper, Zinc, Aluminum and Chromium 6.