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Distilled Water vs Demineralised Water

Choosing between Distilled Water vs Demineralised Water is straightforward once you understand that these are in fact two different products.  Distilled Water is produced through a distillation process whereas Demineralised Water (also known as Deionized Water) relies on the use of ion exchange resins for its production.  Distilled Water is more costly to produce than Demineralised Water.  In practice, Demineralised Water can be used for many of the applications that Distilled Water is used for. 

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 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.

Demineralised Water or 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.  This process results in the production of Demineralised Water.

The degree of purity of Demineralised 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 Demineralised Water is then put through a bed of ion exchange resin for a second time, Double Demineralised Water or Double Deionised Water is produced.  This is also sometimes referred to as Polished Water.  Invariably this produces even purer water with a conductivity level of less than 0.1 microsiemens per centimetre.

If you are at all unsure about the merits of suitability of using Distilled vs Demineralised Water, your specialist water supplier will be able to advise you with regard to the best product for your specific requirements.  Whilst some applications can successfully be carried out using either Distilled or Deioneralised Water, other applications require the specific use of one or the other.  Your Distilled Water supplier will be pleased to advise you regarding the benefits of using Distilled vs Demineralised Water for your application.

When you buy Distilled Water there can be significant savings rather than making your own Distilled Water.  There are many companies who offer distillation equipment for sale but it must be remembered that purchase of capital equipment, together with the ongoing maintenance and routine but essential cleaning of such equipment, will significantly add to the real cost of Distilled Water production.  Therefore, many customers prefer to buy Distilled Water from a reputable supplier with a proven track record. to buy in the finished quality product. 

We are proud of our reputation as a leader in the field of Distilled Water and are pleased to share our expertise with the customer.  We are holders of ISO 9001:2000, the Quality Accreditation which recognises our manufacturing standards as being of the highest quality.  We are in the final stages of our application to ISO 14000, the Environmental Accreditation as you might expect from a company proud of its 'green' credentials.  We also care for our workforce, whom we recognise as our greatest asset and are delighted to be a recognised Investor in People (IIP).  Please contact us for further advice on Distilled vs Demineralised Water for your particular application.

Many industries benefit from the use of Distilled Water.  For example, the Enamel Industry relies heavily on the quality of the water used for the enamelling process.  Calcium and Magnesium salts often found in tap water affect the clay and can alter its ability to mould.    A high concentration of Chlorides in tap water introduces impurities in the enamel and may cause it to 'bubble'.  Another important consideration when using piped water for enamelling is that the composition of salts varies depending on the time of year.  At certain times of year, there will be more salts present, while at other times of year there will be fewer.  The inconsistency of piped water quality is another reason to choose Distilled Water for your enamelling processes.