Berkey PF-4 Fluoride Filters (Set of 2) For White Ceramic Filters

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Product Overview

Set of (2) PF-4 Fluoride, MTBE, Arsenic and Lead Reduction Filters

Please Note:  These will not fit Black Berkey filters, they will only fit British Berkefeld white ceramic filters.  Please order PF-2 fluoride filters if you have Black Berkey filters.

PF-4 reduction elements are designed for use in conjunction with Berkey, Doulton, and British Berkefeld ceramic water filter elements.

These filters are used for the "adsorption" of the following four unwanted elements most commonly found in drinking water:

• MTBE (Methyl-tertiary-butyl-ether)
• Fluoride
• Lead
• Arsenic

PF-4 filters are also designed to "adsorb":
• DBCP (Dibromo-chloro-propane)
• THM's (trihalomethanes)
• Herbicides & Pesticides
• Heavy Metal ions

MTBE: PF-4 elements are manufactured to exceed ANSI/NSF Standard 53, which requires that MTBE be reduced by at least two thirds from an influent rate (water going in) of 15ppb to an effluent rate (water going out) of less than 5ppb (> 95% reduction*). LEAD: Tests have shown that when 2000 gallon of influent water at a concentration of lead of 150-200 ppb pass through 200 grams of media at a flow rate of 1gpm, the lead level was reduced to less than 1ppb (>99% reduction). FLUORIDE: Testing for fluoride was based on 20-30ppm of the ion in the influent aqueous solution at a flow rate of no more than 3 gpm per cubic foot of media. Results of < 1ppm of the fluoride ion in the effluent were typical for the media (>95% reduction). Under optimum conditions, effluent concentrations of less than 50 ppb were readily achieved (>99.75% reduction).

Under normal conditions it is recommended that a pair of PF-4 elements be replaced after 1000 gallons or 6 months, whichever comes first.

K5350, 5350


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  • 5
    PF-4 Fluoride filters

    Posted by WILLIAM HIBBARD on 5th Feb 2020

    I have been using the PF-4 filters with the 9" ceramic filters for about 4 years, changing them regularly. They do a great job at a reasonable price.

  • 5
    Berkey water filters

    Posted by Victoria Hope on 16th Jan 2020

    I have a small stainless Berkey travel system, about 3 years now. Use the filtered water to drink, cook,my cats & plants. Cats will not drink the water unless it is filtered and the plants die with city water. I believe on & trust these filters.

  • 5
    So helpful

    Posted by Sidney on 18th Jun 2016

    The filters work great of course but once again it's the great consumer service. Thanks guys!

  • 5
    Very good product.

    Posted by Angela on 12th Mar 2015

    Easy to install filters. Good tasting water! Very good flow.

  • 5
    Fluoride filters

    Posted by Becky on 21st Feb 2013

    Excellent product, and I feel much better using these filters for even purer water.

  • 5
    Very Pleased

    Posted by Unknown on 28th Jan 2012

    We are happy with the filters, but you have to flush them very well before you use them. Don't forget to flush them a lot.

  • 5
    Fluoride Filters - the only way to drink filtered water.

    Posted by Chipman Tucker on 29th Nov 2011

    We have noticed a big difference in the taste. This is worth every penny for our health and the health of our children