Replacement purifier cartridges for the GeoPress are designed to last 350 cycles (65 gal. / 250L). Lifespan will decline when purifying water with high levels of silt, sediment or tannins. Cartridge press time increases towards the end of the cartridge lifespan; when press time reaches 25-30 seconds, the cartridge should be replaced. Cartridge continues to protect, even as press time increases.

Product Features 

• Removes waterborne pathogens
  (viruses, bacteria, protozoan cysts), including Rotavirus, Hepatitis A,
  Norovirus, Giardiasis, Cryptosporidium, E. Coli, Cholera, Salmonella,
  Dysentery and more
• Filters: particulates (sediment, microplastics) and many chemicals, pesticides, and heavy metals
• Improves taste, smell and clarity