The Black Berkey® Purification Elements are composed of a proprietary blend consisting of carbonized coconut shell. These purifiers are rated to reduce contaminants down to the virus level, and last for 6,000 gallons per pair of elements. These purifiers are the strongest elements we offer and are sold in sets of two.
The Berkey Earth® Filtration Elements’ media is made of diatomaceous earth. They reduce similar contaminants as the Black Berkey® Purification Elements, but cannot remove viruses. These filters last for 3,000 gallons per element or three years, whichever comes first. These elements are sold individually in either 7 inch or 9 inch variants.
The Super Sterasyl™ Ceramic Elements are manufactured by British Berkefeld®, a UK-based company. These elements have been tested to reduce contaminants such as bacteria, cysts, and chlorine; and last for 535 gallons per element. We also offer these filters individually, in either 7 inch, 9 inch, or a thicker 9 inch Imperial Berkey® size.