Aries (AF-20-3202) 20"x2.5" Anion (Hydroxide Form) Mixed Bed DI Filter
Aries AF-20-3202 20"×2.5" Mixed Bed DI Filter (Hydroxide Form)
Anion mixed bed resin cartridge for laboratory-grade water purity in whole house and well water applications requiring final TDS reduction to near-zero
Ion exchange resin removes dissolved solids that carbon and sediment filters cannot touch
Mixed Bed Ion Exchange
Combines cation and anion resins in hydroxide form to remove dissolved minerals, silicates, and ionic contaminants for ultra-pure water output
TDS Reduction to Near Zero
Polishes water to laboratory-grade purity by removing total dissolved solids that pass through RO membranes or softeners
Whole House & Well Applications
Standard 20-inch cartridge fits any compatible housing for point-of-use or whole-home ultrapure water in residential and light commercial settings
Specialty Filtration
Designed for applications requiring extremely low conductivity water including laboratory equipment, humidifiers, and final-stage polishing after reverse osmosis
Fits standard 20-inch filter housings with 2.5-inch diameter cartridge capacity
The Aries AF-20-3202 installs in any 20" × 2.5" filter housing including whole house systems and specialty DI vessels. Use after sediment, carbon, and RO filtration for best results. This hydroxide-form anion resin cartridge is designed for final-stage TDS polishing where water purity below 10 ppm is required. Compatible with Aries Filter Works housings and all standard 20-inch single or multi-stage filtration assemblies.
Replace when TDS meter shows rising output or when water quality no longer meets requirements
Typical Replacement
Replace the Aries AF-20-3202 mixed bed DI cartridge every 3 to 6 months depending on incoming TDS levels and daily water usage. Monitor with a conductivity meter.
Performance-Based Replacement
Resin capacity exhausts faster with higher inlet TDS. Replace when output TDS exceeds your application requirements or when effluent conductivity rises above acceptable levels.
Extend Cartridge Life
Always use sediment, carbon block, and RO filtration upstream of DI resin to remove particulates, chlorine, and bulk dissolved solids. Pre-treatment dramatically extends resin life.
Drop-In Installation
Standard 20" × 2.5" size fits existing housings with no adapters or modifications
Professional Grade Resin
Aries Filter Works quality with high-capacity ion exchange media for reliable performance
Measurable Purity
Monitor cartridge performance in real time using any TDS or conductivity meter
Ultra-Pure Output
Produces water suitable for demanding applications requiring near-zero dissolved solids
Original: $91.30
-65%$91.30
$31.95Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Aries AF-20-3202 20"×2.5" Mixed Bed DI Filter (Hydroxide Form)
Anion mixed bed resin cartridge for laboratory-grade water purity in whole house and well water applications requiring final TDS reduction to near-zero
Ion exchange resin removes dissolved solids that carbon and sediment filters cannot touch
Mixed Bed Ion Exchange
Combines cation and anion resins in hydroxide form to remove dissolved minerals, silicates, and ionic contaminants for ultra-pure water output
TDS Reduction to Near Zero
Polishes water to laboratory-grade purity by removing total dissolved solids that pass through RO membranes or softeners
Whole House & Well Applications
Standard 20-inch cartridge fits any compatible housing for point-of-use or whole-home ultrapure water in residential and light commercial settings
Specialty Filtration
Designed for applications requiring extremely low conductivity water including laboratory equipment, humidifiers, and final-stage polishing after reverse osmosis
Fits standard 20-inch filter housings with 2.5-inch diameter cartridge capacity
The Aries AF-20-3202 installs in any 20" × 2.5" filter housing including whole house systems and specialty DI vessels. Use after sediment, carbon, and RO filtration for best results. This hydroxide-form anion resin cartridge is designed for final-stage TDS polishing where water purity below 10 ppm is required. Compatible with Aries Filter Works housings and all standard 20-inch single or multi-stage filtration assemblies.
Replace when TDS meter shows rising output or when water quality no longer meets requirements
Typical Replacement
Replace the Aries AF-20-3202 mixed bed DI cartridge every 3 to 6 months depending on incoming TDS levels and daily water usage. Monitor with a conductivity meter.
Performance-Based Replacement
Resin capacity exhausts faster with higher inlet TDS. Replace when output TDS exceeds your application requirements or when effluent conductivity rises above acceptable levels.
Extend Cartridge Life
Always use sediment, carbon block, and RO filtration upstream of DI resin to remove particulates, chlorine, and bulk dissolved solids. Pre-treatment dramatically extends resin life.
Drop-In Installation
Standard 20" × 2.5" size fits existing housings with no adapters or modifications
Professional Grade Resin
Aries Filter Works quality with high-capacity ion exchange media for reliable performance
Measurable Purity
Monitor cartridge performance in real time using any TDS or conductivity meter
Ultra-Pure Output
Produces water suitable for demanding applications requiring near-zero dissolved solids
