Purolite A-520E is a macroporous strong anionic resin specifically designed for nitrate removal from domestic water.
The macroporous matrix and the functionality of the special ion exchange group give Purolite A-520E ideal nitrate separation strength even where medium to high sulfate concentrations are present. Therefore, this resin provides superior performance in nitrate removal applications compared to standard ion exchange resins. The nitrate removal process requires producing drinking water that meets the quality standard defined by the European Economic Community with regulation 80/778 of July 1980. This regulation limits nitrates to a maximum acceptable concentration of 50 mg NO3/l. US drinking water regulation limits nitrates to 45 mg NO3/l.