The 20-Inch Big Blue Refillable Filter Cartridge with Purolite A520E is a high-performance water treatment solution designed to remove nitrates and nitrites from potable water supplies. Using advanced Purolite A520E anion exchange resin, this cartridge efficiently targets and reduces nitrate contamination in borehole, municipal, or rural water systems.

Housed in a durable refillable shell, this filter offers flexibility for media replacement and long-term cost efficiency. It is compatible with all standard 20" Big Blue filter housings, making it ideal for whole-house, agricultural, or commercial water treatment applications where nitrate levels need to be controlled.

Key Features:

✔ Filled with Purolite A520E Resin – Specially formulated for efficient nitrate and nitrite removal
✔ Refillable Design – Allows for easy resin replacement, reducing long-term costs
✔ Standard Big Blue 20-Inch Size – Fits most 20” x 4.5” filter housings
✔ NSF-Approved Media Components – Safe for use in drinking water applications
✔ Robust Plastic Shell with Mesh Retainers – Prevents resin escape and maintains flow integrity
✔ Chemical-Free Filtration – Does not add taste, odour, or harmful by-products to your water

What is Purolite A520E?

Purolite A520E is a macroporous strong base anion exchange resin specifically engineered for selective nitrate removal in drinking water. It offers high capacity, low leakage, and excellent efficiency without requiring chemical regeneration for point-of-use applications.

Technical Specifications:

Applications:

✔ Whole-House Water Filtration – Reduces nitrate levels in all household water points
✔ Borehole & Well Water Treatment – Ideal for treating nitrate-contaminated rural sources
✔ Agricultural & Livestock Use – Prevents nitrate accumulation in irrigation or animal drinking water
✔ Pre-Treatment for RO Systems – Protects membranes and enhances water quality
✔ Point-of-Entry & Commercial Systems – Cost-effective nitrate management at larger scale

Benefits:

✔ Protects Health – Helps reduce risks associated with nitrate ingestion, particularly for infants and vulnerable individuals
✔ Improves Water Quality – Targets a specific and difficult-to-remove contaminant effectively
✔ Customisable & Refillable – Sustainable solution with media replacement options
✔ Fast Installation – Simple plug-in design for Big Blue filter housings
✔ Low Maintenance – Just replace the resin media when exhausted

Why Choose the 20” Big Blue Refillable Cartridge with Purolite A520E?

For homes and facilities facing elevated nitrate levels in water, this cartridge provides a proven and dependable solution using industry-trusted Purolite resin technology. Its refillable format offers both performance and long-term value, while its universal fit makes it compatible with most Big Blue systems.

Important Note:

Pre-filtration with a sediment cartridge is strongly recommended to prevent clogging and extend resin life.
Product images are for reference only and may not reflect exact cartridge fill level.