How Deionized and Distilled Water Are Different And What Connects Them

Published: 31st August 2009
Views: N/A

We all know that there are different types of purified water, and the uses may range from industrial, laboratory, pharmaceutical, as well as human consumption. Among the common forms of highly-purified water include deionized water. This type of purified liquid is made using a process called deionization, which utilizes specially-manufactured ion exchange resins, which work to filter out and bind the mineral salts from water. Because a considerable segment of the impurities present in water consist of dissolved salts, the deionization process helps to attain a higher level of purity that is the same as distilled water. However, deionization is not able to fully remove many of the bacteria, viruses and uncharged organic molecules, and these could be removed only with the use of a class of formulated strong base anion resins, which may remove these impurities. The process of creating deionized water is viewed as a rather relatively inexpensive process. So how do the qualities of deionized water differ from that of distilled water?

The Distillation Process

The method for creating distilled water includes converting water from a liquid to a gaseous state, and back to liquid again. This process is done with an equipment called "still," which is composed of a boiling vessel for vaporizing water, as well as a cooling unit or "condenser", to enable the return of water to the liquid state. In distillation, almost all dissolved solids are left in a progressively concentrated solution, which helps to increase the boiling point of the liquid water. While scientists note that substances that vaporize with water are considered nonvolatile, distilled water is said to be nonvolatile. Distillation experts conclude that high-quality stills may selectively condense or liquefy water from among other volatile substances, however most distillation processes allow for the carry-over of at least a few of the volatile substances. A few amounts of nonvolatile material however that are carried into the water vapor stream as bubbles tend to explode or pop off at the boiling water's surface.

How Deionization Differs

The processes for creating deionized water includes the removal or filtering out of electrically charged, or ionized, dissolved substances, through binding these to positively or negatively charged sites on a resin, as the water goes through a column or barrier packed with this resin. Since this type of resin also gathers other dissolved entities that can feed bacteria, many indicate that it's quite usual to find bacterial growth in a deionization column. Despite this, the water that comes out from one of these has a very low conductivity, as the substances that allow electricity to pass have already been eradicated. The processes of distillation and deionization may remove different substances out of water; however they may also leave other impurities behind also. In layman's terms, the purer the water, the more difficult it would be to store without losing its purity. The water we usually drink may not need to be as pure as the liquids used for specialized manufacturing or laboratory processes, however each laboratory or industrial entity has to fine-tune its purification system to attune to the water's intended use, as well as to create a precise monitoring system to make sure that the right levels of purification are met.

Although the purity of water may be measured in various ways, one can also attempt to ascertain or verify the weight of all of the dissolved materials, also called "solutes". This process is easily implemented for dissolved solids, and differs with the methods for dissolved liquids or gases. Deionized water is now considered a very important element for automobiles, where it is used for the vehicle's main cooling systems, where the distilled water intersperses with the hybrid system coolant, for preventing further corrosion of components. This purified water form is also a staple used for topping up the lead in acid batteries, which are used in cars, buses and trucks.

Jo is a content writer for '' (, a reputable UK stationed high quality water manufacturer for over thirty years, producing products like deionized water and demineralized water to a an extensive range of customers in UK, Europe and all over the world. If you have a good quality Vehicle water requirement to be used in car batteries to boost its life duration and in cleaning automobiles to avoid water spots and prolong the existence of its paintwork then take a look at

Report this article Ask About This Article

More to Explore