GREAT TASTE WATER: Great tasting water for the whole family. This drinking water filter removes suspended solids, turbidity, parasites, pathogenic bacteria, chlorine and bad taste from your water. SUSTAINABLE: Ceramic is 100% natural, 80% less plastic waste than other available synthetic filter cartridges. For use in gravity filters. LONG LIFE: Replacement filter cartridges for water filters with wing nut for British Berkefeld stainless steel gravity filters and all other compatible gravity filter systems - 6 months BPA-free long-life ceramic. UNIQUE CERAMIC: The filters are self-cleaning and can be cleaned. Our unique ceramic has BioTect protection that prevents bacteria from growing on or through it. FILTERING WATER SINCE 1826: For almost 200 years, we have continuously improved the technology of our water filters. We proudly export water filters from the UK to over 140 countries globally, saving thousands of lives every year. Our ceramic filters are made from sustainable natural materials and provide up to 99.9999% filtration of bacteria. Our filters have been tested to effectively reduce over 230 contaminants, including sediment, chlorine, heavy metals (including lead), microplastics and many more.