Includes FPK-1022 Mixed-Bed Filter, Clear Housing & Tubing

A DI Filter system added to your RO System will increase your total Rejection rate to 99.9%. That's about as pure as you can get! The system contains a multibed granulated activated carbon with a mixed bed nuclear grade color changing ion-exhange resin. and will remove all dissolved minerals, chlorine and chloramine, radon, unwanted nutrients and all organic pollutants including VOC's.

NOTE:
The gallon capacity of this filter is directly related to the TDS levels in the water being treated. The DI cartridge will last much longer if the other filters on the RO system are changed every 6-months as recommended and the membrane is replaced when the TDS reduction rate drops below 94% as determined with a TDS meter. Our De-Ionization media has "Nuclear Grade, color change indication resin". Typically it will begin changing color from the bottom up. With proper pre-filtration (using our R.O. filter pack # FPK-1002, se below) you can expect excellent performance from this DI system. When the color changes, the DI cartridge needs changing.
When the DI filter is exhausted, the water will taste horrible if the DI filter cartridge isn't changed right away! Keep a spare one on hand as there is no grace period on this filter.

Deionization
WHAT IS DEIONIZATION?

Change the filter cartridge when the rated capacity expires as indicated by the resin color. This filter cartridge contains "Mixed Bed Resin With Color Indicator". The color changes from dark blue to green to yellow as the filter efficiency diminishes. The o-ring in the filter housing should also be periodically replaced and lubricated with vaseline or other type water proof lubricant to prevent leakage.

WHAT ARE IONS?
Ions are divided into two-groups; cations and anions. Cations have a positive charge and include sodium (Na+), calcium (Ca++), and magnesium (Mg++). Anions have a negative charge and include chloride (Cl-), sulfates (SO4--), and bicarbonates (HCO3).

HOW ARE IONS REMOVED FROM WATER?
Ions are removed from water through a series of chemical reactions. These reactions take place as the water passes through ion exchange resin beds. In the regenerated form, cation resin contains hydrogen (H+) ions on its surface which are exchanged for positively charged ions. Anion resin contains hydroxide (OH-) ions on its surface which are exchanged for negatively charged ions. The final product of these two exchanges, H+ and OH-, form water molecules.

SEPARATE BED REACTION
When cation and anion resins are separated, reactions take place independently. This does not allow the ion exchange reaction to reach its completion. For this reason maximum resistivities can not be achieved.

MIXED BED REACTION
When cation and anion resins are mixed, reactions take place to their completion simultaneously exchanging both cations and anions, providing water that is virtually ion free.

HOW ARE IONS MEASURED?
Electrical conductance or resistance is measured by two in-line electrodes. Electrical current moves through water using ionic molecules as stepping stones. The fewer stepping stones, the more difficult the passage of electricity. This causes less electrical conductance and more electrical resistance. The temperature of the water also affects its conductivity/resistivity.<