The Katadyn Base Camp water filter conveniently filters up to 2.6 gallons of water in less than 20 minutes. If you're family camping, on an extended trip, or have set up a base camp, this hanging water filter is a must-have. Just fill it and hang it, gravity does the rest. The Base Camp removes bacteria, Giardia, and Cryptosporidium to EPA standards. The cleanable, replaceable Hiker Pro microfilter cartridge survives up to 200 gallons, depending on the initial water quality. An outlet hose and on/off valve conveniently fill containers without wasting your precious water.