Purolite A520E is a premium-grade macroporous ion exchange resin designed specifically for the selective removal of nitrates from potable water supplies. Supplied in a 25kg bag, it is ideal for use in residential, commercial, and industrial filtration systems, particularly where water sources such as boreholes, wells, or rural municipal supplies are prone to elevated nitrate levels.

Engineered for high selectivity and operating capacity, Purolite A520E resin offers a reliable, long-term solution for achieving nitrate compliance with health and environmental regulations, including those outlined by the World Health Organization (WHO).

Key Features

• Selective Nitrate Removal – Effectively reduces nitrate concentrations to safe, drinkable levels.

• Strong-Base Anion Resin – Macroporous structure allows for optimal ion exchange and water contact.

• High Operating Capacity – Ideal for long service runs between regenerations.

• Excellent Mechanical Strength – Ensures minimal pressure loss and consistent flow performance.

• Safe for Drinking Water – Manufactured to comply with international potable water standards.

Technical Specifications

• Product Code: Purolite A520E

• Form: Moist, spherical beads

• Appearance: Yellow to amber

• Polymer Structure: Styrenic macroporous crosslinked with DVB

• Functional Group: Quaternary ammonium (Type I)

• Ionic Form Supplied: Chloride (Cl⁻)

• Particle Size Range: 300–1200 µm

• Moisture Retention: 55–65%

• Total Exchange Capacity: ≥ 1.0 eq/L (Cl⁻ form)

• Operating pH Range: 4 – 9

• Operating Temperature: Up to 40°C (in nitrate removal service)

• Packaging: 25kg bag

Applications

• Borehole Water Treatment – Removes nitrate contamination common in agricultural areas.

• Domestic Whole-House Filtration Systems

• Municipal Pre-Treatment Systems

• Industrial Water Processes – Where nitrate concentrations pose operational or product risk.

• RO Pre-Treatment – Reduces nitrate load before reverse osmosis membranes.

• Food & Beverage Industry – Ensures water quality for product integrity.

Installation Guidance

• Best used in a pressurised filtration vessel with automatic or manual regeneration.

• Regeneration is typically carried out using sodium chloride (NaCl) brine solution.

• Requires pre-filtration to remove sediment or chlorine, which can degrade resin lifespan.

What’s in the Bag

• 25kg of Purolite A520E Resin (supplied in chloride form, ready for use)

• Technical datasheet (on request)

Important Notes

• Pre-treatment of feedwater (chlorine removal & sediment filtration) is recommended to maximise resin life.

• Regeneration should be managed using appropriate brine dosing based on system size and loading.

• Product images are for reference only.