GRAYL Purifier Cartridge Compatible with any GRAYL product: Ultralight Purifier [+Filter] Bottle and previous generation Water Filtration Cups Removes 99.9999% of viruses (e.g. Hepatitis A, SARS, Rotavirus); 99.9999% of disease-causing bacteria (e.g. E. coli, Salmonella, Cholera); and 99.999% of protozoan cysts (e.g. Giardia, Cryptosporidium) Filters particulates (e.g. sediment, silt), many chemicals (e.g. chlorine, benzene) and heavy metals (e.g. lead, arsenic) Shelf life of 10 years; after a cartridge has been used, it lasts 3 additional years Lifespan is 300 uses (40 gal / 150 L)