Black Berkey Purification Elements (set of 2)

This product includes two 9-inch Black Berkey® Purification Elements for gravity-fed water purification, tested to exceed NSF/ANSI Standard 53 and remove 99.9999% of pathogenic bacteria and 99.99% of viruses.

• The description claims the elements remove 99.9999999% of pathogenic bacteria and 99.999% of viruses.
• The description claims the elements are tested to exceed NSF/ANSI Standard 53.