CeraMetix® GF is the most advanced ceramic filter available. CeraMetix® GF is the most advanced ceramic filter available. CeraMetix® is our CeraSyl™ DE (diatomaceous earth) ceramic shell with our granular AquaMetix® core inside to offer the reduction of aluminum, arsenic, cadmium, chloramines, chlorine, fluoride, lead, mercury, nickel, radionuclides, tri-halomethane, and zinc in a single, revolutionary ceramic filter element. These CeraMetix® GF elements are for use in gravity filter systems only. There is no activated alumina used in this filter. Slimline filters are 2" in diameter. System accommodates up to four filters at a time. * Made in the USA * >92% Fluoride reduction - All types - Fluorosilicic acid/hydrofluorosilicate, sodium fluorosilicate, and sodium fluoride * Silver impregnated to protect the integrity of the ceramic against biofouling to ensure long life. * Cleanable for prolonged life * 0.5 Micron absolute * >99.9% Efficiency at 0.2 micron * Meets or Exceeds NSF/ANSI Standards 42 & 53 for the following: * >99% Chloramine reduction * >99% Chlorine reduction * >99% Lead reduction * >98% Heavy metals reduction * >98% THM's (Trihalomethanes) reduction * >98% VOC reduction * >98% Glyphosate reduction * >98% Pesticides & Herbicides reduction * >99% Pharmaceutical compounds (ANSI/NSF Standard 401) * >99% Fluorinated Organic Acids (PFOA & PFOS) * >99% Microplastics * >95% Per and Polyfluoroalkyl substances (PFAS) * >94% Radionuclides reduction * >92% Nitrates reduction Filters should be replaced annually Capacity 7" filter- 700 Gallons MADE in the USA!