PF-4 Fluoride and Arsenic Reduction Elements for the Berkey Earth Filters or Super Sterasyl Ceramic Filter Element (Set of 2)
Made from safe, non-leaching Polypropylene #5 that is BPA-free. PF-4 Fluoride and Arsenic Reduction Filters are designed to be used in conjunction with the Berkey Earth Elements or the Super Sterasyl Ceramic Filter Elements. Attach to the bottom of the Berkey Earth Elements or the Super Sterasyl Ceramic Filter Elements and sit in the lower chamber of the Berkey unit. Number of PF-4s in the bottom chamber must match the number of Berkey Earth Elements or Super Sterasyl Ceramic Filter Elements in the top chamber; for example, 2 Berkey Earth Elements would require 2 PF-4 Filters.
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