This replacement ceramic cartridge for Combi removes most microorganisms including Bacteria and Giardia and can filter up to 13,000 gallons. The Combi Microfilter is part of the Katadyn® endurance series. Its 0.2 ceramic depth filter removes 99.9999% Klebsiella terrigena, and 99.99% Giardia/Cryptosporidium. The Katadyn® Carbon for Combi will provide approximately 1 quart (1 L) of water per minute. One cartridge will filter up to 13,000 gallons (50,000 l) depending on water quality.