Geopress Purifier Cartridge Color:Black Our MACH Gs are a

Our MACH Gs are a classic aviator style made to give you the speed if you feel the need

You've got an unconditional lifetime guarantee's worth of time to search

helpful if you’ve got a screw loose

and thinner lower down

Not when there's Merino wool out there

Geopress Purifier Cartridge Color:Black Our MACH Gs are aReplacement 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.