What is the life of the PF-4™ filters?

Each set of four PF-4™ filters is will last for 1,000 gallons or six months, whichever comes first. The reason for the six-month limitation is that the carbon within the PF-4™ filters extracts contaminates that can be nutrients on which bacteria can grow. If the filters are used longer than six months, “grow-through” can occur.

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Do the Berkey Light® systems contain BPA?

In the past the Berkey Light® systems were made of food grade polycarbonate that was approved by the US Food and Drug Administration. Some research suggests that polycarbonates have been known to leach BPA (Bisphenol-A) when either exposed to High Strength Industrial Grade Alkaline Detergents or when they are repeatedly exposed to temperatures in excess of […]

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Can I use the Berkey® system with softened water?

The Black Berkey® purification elements are designed to remove heavy metals, but will not remove mineral salts, which are added by a water softener. The salt used to soften water will not be extracted by the  Black Berkey® element. You can use one of our purification systems on a regular basis by bypassing your water softener to […]

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What is the Micron rating of the Black Berkey® Purification Elements

With respect to the micron rating, NMCL does not use or publish a micron rating for the Black Berkey® elements for the following reasons: There is much confusion with respect to nominal and absolute micron ratings. An absolute micron rating is one that states the maximum pore size expected within an element. The nominal micron rating […]

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