4.5″ x 20″ Bone Char Cartridge For Fluoride Removal (4.5″ x 20″). Removes or Reduces Flouride. Fits any big blue 4.5″ x 20″ Housing. Removes 4,665ppm of flouride. Suggested flow – 5 gpm. Bone char carbon is a unique carbonaceous adsorbent manufactured from the treatment and carbonization of selected grades of animal bone and is used for liquid phase filtration to remove organic and inorganic species such as color bodies and many heavy metals. Bone char is different from. In that it contains both carbon surface area and hydroxyapatite lattice surface area. Good adsorption of various heavy metals Produced from aged bones for better efficiency Maintains alkalinity in adsorbate. The material has found applications in the sugar and water purification industries as a cost effective and efficient means of removing trace impurities. The material has been shown to have a high adsorption capacity for a wide range of inorganic and organic contaminants including heavy metals. Bone char has also been used in the removal of radioisotopes from water. Bone Char is especially effective in removing radioactive particles, arsenic and THM’s from the water as well as fluoride. Track Page Views With. Auctiva’s FREE Counter. The item “Bone Char Whole House Water Filter Cartridge 4.5 x 20 Fluoride Reduction USA” is in sale since Saturday, October 3, 2015. This item is in the category “Home & Garden\Home Improvement\Plumbing & Fixtures\Water Filters”. The seller is “oceanicwatersystems7″ and is located in Sylmar, California. This item can be shipped worldwide.