Deionized water has had all the dissolved inorganics (or ions) removed. Typically, about 95% of known water contaminants are dissolved inorganics. So, processes that remove ions can potentially remove up to about 95% of all the contaminants. The ion exchange process takes advantage of the fact that all ions have either a positive or negative charge. Ion exchange resin has an attaction for these dissolved inorganics.
The ion exchange resin is made of tiny polystyrene beads – about the size of a grain of sand. It is called mixed bed because two types of beads are mixed together. The surface of the cation beads contain hydrogen ions (positive charge). The surface of the anion beads contain hydroxide ions (negative charge). The resin works by exchanging contaminant ions in the water with the hydrogen and hydroxide ions. The contaminants attach to the beads while the hydrogen and hydroxide are released into the water. These two ions combine together to produce H2O. When the filter has approached its capacity for holding on to the contaminant ions, it can be regenerated and used again and again.
Lanlang® TY MB-1 is a high quality resin mixture composed of strong acid cation resin in H+ form and strong base type 1 anion resin in OH+ form. Ready to use as supplied. It is designed for production of high purity water and other applications requiring DI water, such as WEDM, window washing, aquarium etc. It can achieve almost complete reduction of TDS and conductivity <0.1 µS/cm. Carbon dioxide could carbonate the hydroxide sites of anion component, so it is important to avoid exposure to atmosphere for long period.
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