*The PF-2™ Fluoride and Arsenic Reduction Filters are made and assembled in the USA
The Berkey PF-2™ Fluoride and Arsenic Reduction Elements adsorb the following unwanted elements found in drinking water:
Fluoride: Sodium Fluoride, Sodium Fluorosilicate, Fluorosilicic Acid (aka Hydrofluorosilic Acid)
Arsenic: V and pre-oxidized Arsenic III
Other residual heavy metal ions
Made from safe, non-leaching Polypropolene #5 that is BPA-free
Sold in a set of 2
Berkey PF-2™ Fluoride and Arsenic Reduction Elements are designed to be used in conjunction with the Black Berkey® Purification Elements only 
Attach to the bottom of the Black Berkey® Purification Elements and sit in the lower chamber of the Berkey unit
Number of Berkey PF-2™ Elements in the bottom chamber must match the number of Black Berkey® Purification Elements in the top chamber; for example, 4 Black Berkey® Purification Elements would require 4 PF-2 Filters
Set of 2 Berkey PF-2™ Elements need replacement after 1000 gallons of use
The Berkey PF-2™ Fluoride and Arsenic Reduction Elements are covered under a six month warranty