If NMCL’s recent test results show that the Berkey Earth® Purification Elements reduce Fluoride, then why do I need the Berkey PF-4™ Post Filter Elements?

NMCL’s most recent laboratory testing indicates that the Berkey Earth® Filtration Elements will initially reduce Fluoride up to 99.9%. Typically, filtration elements that reduce Fluoride begin to lose that ability rather quickly. This is the same case with Berkey Earth® Filtration Elements, as their efficiency at reducing Fluoride plays out long before the 3 year/3,000-gallon life of […]

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