All Doulton® ceramic filter elements are manufactured under International Standards Organisation (ISO) conditions. They have the highly consistent and controlled pore structure necessary to provide genuine sub micron filtration.

The Cleanwater Company takes its product performance claims very seriously. Where drinking water filters are concerned, it is of vital importance that manufacturers’ claims as to the effectiveness of their products at removing contaminants are supported by proven test data.

All Cleanwaters’  claims with regard to the performance of Doulton® filter elements have been verified by independent laboratory testing

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