COMPATIBILITY. Works with Grayl 16.9 Fl Oz UltraPress Water Purifier & Filter Bottle REMOVES ALL PATHOGENS. 99.9% of viruses (e.g. rotavirus, norovirus, hepatitis A), 99.9999% of bacteria (e.g. E. Coli, salmonella, dysentery), and 99.9% of protozoan cysts (e.g. giardia, cryptosporidium, amoebae) FILTERS particulates (e.g. sediment, microplastics) and adsorbs volatile organic compounds (VOCs), PFAS, chemicals, pesticides, herbicides, heavy metals, flavors and odors INDEPENDENTLY TESTED & LABORATORY CERTIFIED to meet or exceed NSF protocols 42 and 53 for pathogen and chemical removal LIFESPAN. Rated for 300 cycles (40 gal./ 150L); Unused purifier cartridge has a shelf life of 10 years when stored properly