Aqua-Pure AP5527 5598101 Under Sink Reverse Osmosis Replacement Filter Cartridge,Pack of 2 Reduces: Sediment, Chlorine Taste and Odor, Lead, Cyst, Chromium, Cadmium, Copper, Radium, TDS, Fluoride, Arsenic, Turbidity, Selenium No spills, no mess, fast, easy, and sanitary cartridge change with 1/4 of a turn High pure water production rate; 9-14 gallons per day Pre and Post Filter Cartridges Scale/Corrosion Filters