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Distilled Water vs Deionized Water

When considering the merits of Distilled Water vs Deionized Water it is important to understand a few basic facts about how each is produced.  Distilled Water is produced through a distillation process whereas Deionized Water relies on the use of ion exchange resins for its production.  Distilled Water is more costly to produce than Deionized Water.  In practice, Deionized Water can be used for many of the applications that Distilled Water is used for.  However, there are certain applications where the use of Distilled Water is essential and these are discussed below.

The manufacturing process for Distilled Water mimics the production of rainwater in nature.  Distillation is a completely natural process, with the process of Distillation being the oldest method of producing purified water.  Water is placed in a heating vessel and heated by a heat source until it boils.  As the water boils it produces steam which is collected in another container.  The steam is then cooled using a condenser and the steam returns to its liquid state.  Any contaminants and trace elements are left behind in the vessel used for boiling, leaving behind pure Distilled Water.

Deionized Water is produced by using Ion Exchange resins where the water passes through porous beds of resin.  As the water passes through these porous beds of ion exchange resins,the ions in the water exchange with the ions in the resin bed.  The positive ions and the negative ions are netralized with the use of an acid and a base product such as Hydrochloric Acid and Sodium Hydroxide.  This produces neutral conditions where the positive and negative ions have been neutralized.  Thhis process results in the production of Deionized Water.

The degree of purity of Deionized Water can result in water that meets recognised international standards such as set down by the European Pharmacopiea (EP), the British Pharmacompiea (BP), the United States Pharmacopiea (USP) and the Japanese Pharmacopiea (JP) as examples.  If Deionized Water is then put through another mixed bed of ion exchange resin, this is described as 'Double Deionized' or 'Polished Water', both names referring to the same product.  Invariably this produces even purer water with a conductivity level of less than 0.1 microsiemens per centimetre.

If you are still uncertain about the benefits of Distilled Water vs Deionised Water, it is helpful to understand when the use of Distilled Water is essential.  Distilled Water is used in the automotive industry to top up lead-acid batteries as the trace elements found in Deionized Water could greatly reduce the lifespan of the battery.  Additionally, Distilled Water is widely used in the enamelling industry due to its lack of certain trace elements, minerals and heavy metals which could cause ‘bubbling’ in the surface of the enamel.

In the home, many people still prefer to use Distilled Water in steam irons because the trace elements in other types of water can cause the steam vents to become blocked and reduce the effectiveness of the steam iron function.

‘Distilled Water vs Deionised Water?’ is something that many customers ask themselves so to be sure that you are buying the correct type of water for your specific needs, why not contact our friendly and professional Sales staff who will be able to give practical and knowledgeable advice to help you make your decision,.  Remember, that we have been in the Distilled Water industry for over 30 years and have built up an excellent reputation as Distilled Water suppliers.  We are a Quality Assured company working to the exacting requirements of ISO 9001:2000 so whether you wish to buy your  Distilled Water online, are interested in Distilled Water history or are interested in our Distilled Water delivery service, we would love to hear from you.