2-Pack Replacement BB9-2 Black Purification Elements, Activated Carbon Water Filters Compatible with Berkey Big, Nomad, King, Royal Gravity-fed Water Filter System, and other Gravity Filter Tank

Installation 1. Remove the upper chamber of the system. 2. Open the lid and unscrew the old water filter cartridges from the upper chamber. 3. Fill a clean container with clean water and soak the replacement water filter in the water for at least 30 minutes. Tilt the filter, while under water, so that any air bubbles can escape from both ends. 4. Remove the water filter from the water. Cover the holes with either your fingers or the blue caps that came with the filter, and shake the filter vigorously. Then tap them lightly on the counter to loosen any residual manufacturing dust. 5. Screw the new water filter onto the upper chamber. 6. Return the upper chamber to the system by placing it onto the lower chamber. 7. Fill the upper chamber with water and let it drain into the lower chamber. When the lower chamber is ful, discard the first batch of water as it may contain residual manufacturing dust, The system is ready for use now. Contaminants Reduced Contaminants reduced include, but are not limited to: Trihalomethanes: Bromodichloromethane; Bromoform; Chloroform: Dibromochloromethane Inorganic Minerals : Chloramine; Chloride; Chlorine Residual (Total Residual Chlorine); Free Chlorine Heavy Metals:Aluminum; Antimony; Barium; Cadmium; Cobalt; Chromium; Copper; Iron; Lead; Mercury; Molybdenum; Nickel; Vanadium; Zinc Also reduces: Arsenic; Manganese; MBAS; PCB s; Petroleum Products(Gasoline, Diesel, Crude Oil, Kerosene, Mineral Spirits; Selenium; Thallium; Rust; Silt; Sediment; Turbidity; Foul Tastes and Odors.