Flow-Pur Tear Drop Number 6 Water Filter is a solid block activated carbon replacement cartridge. It filters 0.5 Micron nominal for lead, VOCs, giardia eatamoeba, toxoplasma and cyproidium cysts, chlorine, foul taste or odor, fine sediment and rust particles. The Number 6 filter cartridge fits most standard 10 Inch filter housing canisters. Works at pressures from 20 to 125 Pounds Per Square Inch with 1 Gallon Per Minute flow rate.