All Berkeys require at least 2 Black Berkey Elements. The exception is the Go Berkey, as it requires only 1 and comes packaged with only 1.
All other Berkey Units come standard with a package of 2 Black Berkey Elements. Extras are purchased in a box of 2 Black Berkey Elements, with the option to purchase as many as needed for the Berkey unit you have purchased. They can be purchased bundled for a discounted price at the time you purchase your Berkey unit depending on the number you choose to buy.
Black Berkey® Purification Elements are more powerful than any other gravity filter element currently available. The Elements have a unique purification capability that is due to their unique structure. The micro- pores within the Black Berkey® Elements are so small that viruses and pathogenic bacteria are simply not able to pass through them.
Many water filters on the market may claim to be a water purifier, but do not meet the performance specifications required for this classification. In order to be classified as a water purifier, a water treatment device must remove at least 99.9999% of pathogenic bacteria and reduce viruses by 99.99%. The Black Berkey® Purification Elements can be classified as water purifiers because they remove 99.9999999% of pathogenic bacteria and 99.999% of viruses, which greatly exceeds the standard. The Black Berkey®Purification Element formulation has been tested by State and EPA accredited laboratories to exceed NSF/ANSI Standard 53.
The Black Berkey® Purification Elements have been tested and confirmed to remove or greatly reduce the contaminants listed below: