Grayl UltraPress® Purifier Cartridge

Replacement purifier cartridges for the UltraPress™ 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.

The UltraPress and Ultralight replacement purifier cartridges are forward/backward compatible with each other and do utilize the same purification technology. So you can use this cartridge in your UltraLight. This UltraPress/UltraLight cartridge's flow channels are stronger and more durable in comparison.