Grayl - UltraPress Replacement Purifier Cartridge EOSS First Spear Tubes (sold separately)

First Spear Tubes (sold separately)

Insulated Fully Detachable Hood

and environmental exposure

Rigorously tested to meet drinking water protocols established by the US Environmental Protection Agency (EPA) and NSF International/ANSI

Grayl - UltraPress Replacement Purifier Cartridge EOSS First Spear Tubes (sold separately)Replacement purifier cartridges for the UltraPress (Also works for the Ultralight) are designed to last 300 cycles (40 gal. 150L). 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. Features: Removes