General description The Berkey Black Filter Activated Carbon Filter Combo Pack includes the BB9-2 Water Filter Element and the PF-2 Fluoride Filter. These filters are designed to enhance water quality by removing a wide range of contaminants, ensuring safe and great-tasting drinking water. Technical specifications Material: High-quality sintered natural activated carbon Base: Food-grade plastic, lead-free and BPA-free Filtration capacity: Recommended replacement every 1000 gallons (depending on water conditions) Compatibility and accessories Compatible with gravity filtration systems including TravelBig, Royal, Imperial, Crown, and Light series Also compatible with Daulton Super Sterasyl and ATC Super Sterasyl series Usage Effectively removes fluoride, arsenic, and other heavy metal ions Removes contaminants such as inorganic minerals, heavy metals, silt, sediment, chlorine, sand, rust, odors, and large particles