Deionization Resin Refill 1 lb $12.95 1 lb. Resintech MBD-30 Color Changing Nuclear Grade DI Resin from Resintech. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often. MPN#1MBD30# Quantity:  + -	Nuclear Grade Deionization Resin Refill 1 lb $14.95 1 lb. Resintech MBD-20 Nuclear Grade DI Resin from Resintech. MPN#1MBD30# Quantity:  + -
Deionization Resin 2 lbs $24.00 2 lb. Resintech MBD-30 Color Changing Nuclear Grade DI Resin from Resintech. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often. MPN#2MBD30# Quantity:  + -	Nuclear Grade Deionization Resin 2 lb $26.00 2 lb. Resintech MBD-20 Nuclear Grade DI Resin from Resintech. MPN#1MBD30# Quantity:  + -
Deionization Resin 3 lb $36.00 3 lb. Resintech MBD-30 Color Changing Nuclear Grade DI Resin from Resintech. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often. MPN#3MBD30# Quantity:  + -	Nuclear Grade Deionization Resin 3 lb $38.00 3 lb. Resintech MBD-20 Nuclear Grade DI Resin from Resintech. MPN#1MBD30# Quantity:  + -
Deionization Resin 5 lb $46.50 5 lb. Resintech MBD-30 Color Changing Nuclear Grade DI Resin from Resintech. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often. MPN#5MBD30#	Nuclear Grade Deionization Resin 5 lb $48.50 5 lb. Resintech MBD-20 Nuclear Grade DI Resin from Resintech. MPN#1MBD30# Quantity:  + -
Bulk Deionization Resin 10 lb $93.50 10 lb. Resintech MBD-30 Color Changing Nuclear Grade DI Resin from Resintech. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often. MPN#10MBD30# Quantity:  + -	Bulk Deionization Resin 15 lb $125.00 15 lb. Resintech MBD-30 Color Changing Nuclear Grade DI Resin from Resintech. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often. MPN#15MBD30# Quantity:  + -
DI add on kit $36.50 Our DI add on kit comes complete with 10 inch canister, fittings and a refillable DI cartridge prefilled with... Quantity:  + -	Twin DI add on kit $59.95 Our Twin DI add on kit comes complete with 2- 10 inch canisters, fittings and 2 refillable DI cartridges prefilled with... Quantity:  + -

De-ionization, (commonly referred to as DI), is a common process for producing ultra pure water. The DI filter is filled with resin beads, some with a negative charge and some with a positive charge. When you test your water with a TDS meter (total dissolved solids), it gives you a number that tells you the sum of the different contaminates in your water. All of these contaminates are either negatively or positively charged, so when they pass through the DI filter they are attracted to the oppositely charged resin beads. Since the DI filter has both negatively and positively charged resin beads it is able to remove 99% of the contaminates in your water. Reverse Osmosis (RO) is capable of removing 95-97% of all contaminates, so when the remaining 3-5% is passed through a DI filter you are effectively removing 99.9% of the contaminates. This quality of water is comparable to distilled water and is excellent for use in reef aquariums.

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