Franke filter cartridges consist of a ceramic outer shell and an enclosed activated carbon block core Each cartridge utilizes a multi-stage filtration process to ensure optimal performance Reduces Chlorine, Particulate & Turbidity, Cysts (Cryptosporidium) and Lead Certified by NSF international against NSF/ANSI Standards 42 & 53 Replace every 6 months or 600 gallons. For use with Franke water filtration canister models FRCNSTR, FRCNSTR100, FRCNSTR-DUO-1, FRCNSTR-DUO-2 Install available FM100 bluetooth water quality monitor to know precisely when your filter needs replaced (sold separately) Water consumption: 0.5 gallons_per_minute