Sterasyl ceramic outer shell - carbon block core

At the heart of every Doulton and British Berkefeld ceramic filter is the “Sterasyl” silver impregnated ceramic microfilter. The incorporation of silver locked within the ceramic structure inhibits the growth of bacteria giving the ceramics self-sterilizing properties and removes the need for boiling of the filter to remove or kill the impurities within the ceramic pores. The Doulton range of ceramic filter elements starts with the “Sterasyl” and with added core medias can become a three stage filter in one, eliminating the need for expensive 4 and 5 stage systems. Doulton ceramics do not remove the beneficial minerals from the water, ensuring the filtered water is enjoyable to drink and yet safe from harmful impurities.