Specifications:

• A-2: Flouride Reduction 4 inch (S) Gravity Use Specialty Filter Cartridge.
• This is not a Doulton cartridge but it is specifically designed to fit only the Doulton and British Berkefield gravity housings.
• These filter elements are designed to reduce fluorides in drinking water to below 0.5 ppm.
• They are constructed with materials which are FDA approved.
• The A-2 filter element uses activated alumina that has been especially prepared for the reduction of fluorides in drinking water.
• Laboratory tests show that this preparation will improve the capability of the filter to reduce the fluoride levels from 10 ppm F+ to below 0.2 ppm F+.
• Normal total capacity of the A-2 is over 8,000 ppm F+.
• The A-2 element has also been shown to reduce arsenic to less than 0.02 ppm from 0.12 ppm in the supply water.
• Total capacity for arsenic has not been determined.