ProPur ProOne G 2.0 - 9" Filter Elements (1 PAIR) for ProPur King - New ProOne Filter Elements Chemical and Fluoride Removal Pair (2) of ProPur ProOne High Performance Filter Elements for chemical and fluoride removal. The new ProOne filter element does it all! WATER, FLUORIDE and other heavy metals - 2 stage filtration in one filter element. Advanced manufacturing technology combines silver impregnated white ceramic with new AquaMetix advanced media for removal of fluoride and other heavy metals all in one filter element Only ProOne water & fluoride filter element helps reduce or remove pesticides, herbicides chloramines (ammonia with chlorine), hydrofluorosilicic acid (the latest form of fluoride not covered by other fluoride filter brands) and sodium hexa fluorosilicate. New ProOne water and fluoride filter elements are tested to meet NSF/ANSI standards 42, 53 and 61. Ideal for use with just about any water source including lakes, rivers, streams, ponds and rain water.