GRAYL UltraPress™ Replacement Purifier Cartridge Color:Black This version of M

This version of M

Weighing under 3 ounces

and South-West Africa/Namibia

It also includes case studies of early explorers

GRAYL UltraPress™ Replacement Purifier Cartridge Color:Black This version of MReplacement purifier cartridges for the UltraPress (also Titanium 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. FEATURES: Removes waterborne