Berkey Authentic Black Berkey Elements BB9-2 Filters for Berkey Water Systems (Set of 4 Black Berkey Elements)

Authentic Replacement: 4 AUTHENTIC BLACK BERKEY ELEMENTS BB9-2 REPLACEMENT ELEMENTS FOR BERKEY GRAVITY-FED WATER FILTER SYSTEMS Wide Compatibility: Black Berkey Elements can be used with Big Berkey, Berkey Light, Crown Berkey, Imperial Berkey, Royal Berkey, Go Berkey, and Travel Berkey Systems. Independent Testing: Composed of a unique, proprietary blend of multiple media types backed by testing from accredited, third-party labs. Contaminant Reduction: Black Berkey Elements remove or dramatically reduce over 250+ typical contaminants that could be present in freshwater sources. Economical Solution: Provide filtered water for just pennies per gallon, making it a cost-effective choice. Long-Lasting Use: Each pair of Black Berkey Elements lasts for up to 6,000 gallons before replacement is recommended. Practical Design: Berkey systems are simple and easy to use, requiring no electricity, costly installation, or tools.