Fluoride and Arsenic Filter NSF/ANSI 42 Certified,Replacement for PF-2® Fluoride Filters,K5366 Replacement for Berkey Fluoride Filters Compatible with Berkey Gravity Filtration System-Pack of 2[High efficiency Filtration] : Replacement for PF 2 fluoride filters effectively reduce fluoride and arsenic, absorb odor, color, residual chlorine, heavy metals, they also reduce sediments and large particles effective in improving taste [Fluoride and Arsenic Filter]: The white fluoride filter for pf 2 replacement is made of natural mineral synthesis material Carbonate Apatite as the filter medium. Efficient absorption of 99% residual chlorine and