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Works with Katadyn Gravity Camp 6L and Base Camp Pro 10L Microfilter Systems for removing bacteria and cysts such as Giardia & Cryptosporidium. 0.2 micron Ultra Flow Filter™ pleated glass fiber. A cleanable filter protector lengthens the lifetime of the filter element so it can clean up to 1,500 liters of water. Suited for turbid conditions. Not compatible with Base Camp Filter. Purchase the Base Camp Upgrade Kit for use with older Base Camp model.