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Doulton, a company more commonly recognized for their fine china has been a leading name in drinking water filtration for over 150 years. The Super-Sterasyl is a ceramic cartridge for use as a pre-filter for the removal of parasites and bacteria, which also internally has a blend of granular carbon for the removal of organics ,chemicals, taste and odour. When the water flow slows you simply remove the cartridge, scrub off the discoloured outer layer and re-install.
The incorporation of silver locked within the ceramic structure inhibits the growth of bacteria.
Doulton holds accreditation from the World Health Organisation, National Sanitation Foundation, EPA and a long list of other health departments in numerous countries throughout the world.