Fluoride is a highly toxic substance that is present in water and causes lifelong damage. Mainly fluoride occupies the space inside the human bones and makes it weak. Fluoride is a dissolved solid, it’s hard to remove from water. Absorption is one of the best ways to remove fluoride from water. There are various methods, but our RAMA POSTreat Steel Fluoride reduction cartridges use Activated Alumina to effectively remove fluoride from water. The Porous material present in activated alumina absorbs the dissolved solids such as fluoride. Our fluoride reduction cartridges are made up of high-grade stainless-steel material, unlike other brands which are made up of plastics, because of this our cartridges don’t leach any toxic chemicals into the water. With a pair of RAMA POSTreat steel fluoride reduction cartridges get you fluoride-free water for up to 6 months for a family of four people. We recommend changing the Postreat fluoride reduction cartridges after 2000 litres.