Aries (AF-20-3610-BB) 20"x4.5" Big Blue Nitrate Selective Filter
Aries AF-20-3610-BB Filter Specs
Filter Specifications & Performance Data
| Model Number | AF-20-3610-BB |
| Cartridge Dimensions | 20 inches length x 4.5 inches diameter |
| Filter Media Type | Strong base anion exchange resin (Type I or II) |
| Primary Contaminant Removal | Nitrate (NO₃⁻) and Nitrite (NO₂⁻) |
| Housing Compatibility | Standard 20" x 4.5" Big Blue housings |
| Filter Category | Specialty ion exchange filter |
| Recommended Replacement | Based on inlet nitrate levels and water usage (test outlet regularly) |
Where This Filter Works Best
The Aries AF-20-3610-BB nitrate selective filter is designed for whole-house point-of-entry installation in areas with elevated nitrate levels from agricultural runoff or naturally occurring groundwater contamination. This cartridge fits any standard 20-inch Big Blue housing with 4.5-inch diameter capacity and is ideal for well water systems where nitrate testing indicates levels above EPA maximum contaminant levels. Because it uses strong base anion resin, this filter works through ion exchange rather than mechanical filtration, meaning performance depends on total dissolved solids, pH, and competing anions in your source water. Best results occur when installed as part of a multi-stage filtration system with pre-filtration to remove sediment and protect the resin bed, and when water chemistry is evaluated prior to installation to ensure compatibility with anion exchange media.
Aries AF-20-3610-BB Filter Specs
Filter Specifications & Performance Data
| Model Number | AF-20-3610-BB |
| Cartridge Dimensions | 20 inches length x 4.5 inches diameter |
| Filter Media Type | Strong base anion exchange resin (Type I or II) |
| Primary Contaminant Removal | Nitrate (NO₃⁻) and Nitrite (NO₂⁻) |
| Housing Compatibility | Standard 20" x 4.5" Big Blue housings |
| Filter Category | Specialty ion exchange filter |
| Recommended Replacement | Based on inlet nitrate levels and water usage (test outlet regularly) |
Where This Filter Works Best
The Aries AF-20-3610-BB nitrate selective filter is designed for whole-house point-of-entry installation in areas with elevated nitrate levels from agricultural runoff or naturally occurring groundwater contamination. This cartridge fits any standard 20-inch Big Blue housing with 4.5-inch diameter capacity and is ideal for well water systems where nitrate testing indicates levels above EPA maximum contaminant levels. Because it uses strong base anion resin, this filter works through ion exchange rather than mechanical filtration, meaning performance depends on total dissolved solids, pH, and competing anions in your source water. Best results occur when installed as part of a multi-stage filtration system with pre-filtration to remove sediment and protect the resin bed, and when water chemistry is evaluated prior to installation to ensure compatibility with anion exchange media.
Description
Aries AF-20-3610-BB Filter Specs
Filter Specifications & Performance Data
| Model Number | AF-20-3610-BB |
| Cartridge Dimensions | 20 inches length x 4.5 inches diameter |
| Filter Media Type | Strong base anion exchange resin (Type I or II) |
| Primary Contaminant Removal | Nitrate (NO₃⁻) and Nitrite (NO₂⁻) |
| Housing Compatibility | Standard 20" x 4.5" Big Blue housings |
| Filter Category | Specialty ion exchange filter |
| Recommended Replacement | Based on inlet nitrate levels and water usage (test outlet regularly) |
Where This Filter Works Best
The Aries AF-20-3610-BB nitrate selective filter is designed for whole-house point-of-entry installation in areas with elevated nitrate levels from agricultural runoff or naturally occurring groundwater contamination. This cartridge fits any standard 20-inch Big Blue housing with 4.5-inch diameter capacity and is ideal for well water systems where nitrate testing indicates levels above EPA maximum contaminant levels. Because it uses strong base anion resin, this filter works through ion exchange rather than mechanical filtration, meaning performance depends on total dissolved solids, pH, and competing anions in your source water. Best results occur when installed as part of a multi-stage filtration system with pre-filtration to remove sediment and protect the resin bed, and when water chemistry is evaluated prior to installation to ensure compatibility with anion exchange media.
