Franke filter cartridges consist of a ceramic outer shell and an enclosed activated carbon block core. The 0.5 - micron filter is highly effective in reducing 99% of chlorine, eliminating tastes and odors, removing particles and turbidity, as well as other major impurities. Each cartridge utilizes a multi-stage filtration process to ensure optimal performance. Replace every 6 months or 600 gallons, Water consumption: 0.5 gallons_per_minute For use with Franke water filtration canister models FRCNSTR, FRCNSTR100, FRCNSTR-DUO-1, FRCNSTR-DUO-2. FRC06 Under-Sink Water Filter