Deionization Replacement Filters for RO Systems

The Di filter goes after the RO membrane. A DI filter cartridge is filled with a black resin (note: the carbon block filter is white; the DI cartridge has black carbon-looking material). Once the RO membrane has removed most of the impurities, the DI filter cartridge removes the final impurities.

A color changing DI cartridge will change from black to brown as it is used. Once it is mostly brown, it should be replaced. A refillable DI resin cartridge can save you some money. One of our best selling Di cartridges is the Spectrapure Maxcap DI, which contains a high quality Spectrapure DI resin.
20 Results
Marine Depot Color Indicating Mixed Bed DI Cartridge

Marine Depot Color Indicating Mixed Bed DI Cartridge

SpectraPure® MaxCap DI Cartridge (DI-MC-10)
10%
off

SpectraPure® MaxCap DI Cartridge (DI-MC-10)

SpectraPure® SilicaBuster DI Cartridge - Non-Indicating (DI-SB-10)
10%
off

SpectraPure® SilicaBuster DI Cartridge - Non-Indicating (DI-SB-10)

SpectraPure® MaxCap DI Cartridge - SuperDI (DI-MC-10HC)
10%
off

SpectraPure® MaxCap DI Cartridge - SuperDI (DI-MC-10HC)

AquaFX Color-Indicating DI Cartridge

AquaFX Color-Indicating DI Cartridge

Aquatic Life Color Changing Deionization Filter for Twist-In Systems

Aquatic Life Color Changing Deionization Filter for Twist-In Systems

Marine Depot Clear Refillable 10-Inch Cartridge for DI Resin
10%
off

Marine Depot Clear Refillable 10-Inch Cartridge for DI Resin

AquaFX High Silicate Removal DI Cartridge

AquaFX High Silicate Removal DI Cartridge

SpectraPure® SilicaBuster DI Cartridge - Color-Indicating (DI-SB-CI-10)
10%
off

SpectraPure® SilicaBuster DI Cartridge - Color-Indicating (DI-SB-CI-10)

SpectraPure Enduro DI High Performance Deionization Cartridge
10%
off

SpectraPure Enduro DI High Performance Deionization Cartridge

Kent Marine Hi-S DI Replacement Cartridge - Color Change

Kent Marine Hi-S DI Replacement Cartridge - Color Change

AquaticLife Mixed Bed Resin Reverse Osmosis Cartridge
10%
off

AquaticLife Mixed Bed Resin Reverse Osmosis Cartridge

Triton Reagents DI Resin - 1000 ml
new

Triton Reagents DI Resin - 1000 ml

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