Deionization is the process that serves to remove all ionized substances from a solution. Most commonly is the exchange process where cations and anions are removed independently of each other.Deionized water makes up a form of drink which eradicates all existing ions while having no charge. It may be produced through the addition of conventional water and having it be exposed to electrically charged resins in order to be connected and enticed to salts for the purposes of getting rid of them from the water. The purity of deionized water depends on the source water. Deionized water is used when a gentle solvent is needed. It is used for: cooling applications in which it's critical to keep away from depositing minerals.