Berkey PF 2 Fluoride/Arsenic Replacement Filters, by

Removes: Fluoride, Arsenic V and pre-oxidized Arsenic III, as well as other residual heavy metal ion It is recommended that each set of two PF-2 elements be replaced after 1,000 gallons. As an example, You simply screw the PF-2 Flouride filter into the Black Berkey filters. We do not bundle these as our price is so low, however you can order as many as you like