Grayl GeoPress Purifier Cartridge Color:Orange The 40-mm N-B-1 canister can

The 40-mm N-B-1 canister can withstand environments where the oxygen level is down to 19%

Grind: Full-Flat

and Backcountry Maintenance

helps immensely with the retention of the blade

Grayl GeoPress Purifier Cartridge Color:Orange The 40-mm N-B-1 canister canReplacement 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. Features: Removes waterborne pathogens (viruses, bacteria,