August 10

A Quick Learning Guide On How To Make Demineralized Water



Demineralized water is particularly purified water . It removes minerals or salts  like magnesium , calcium , sulfate , chloraide , Bicarbonate , nitrate and sodium from water  . The water is known as Deionized water, DI or Demin Water. Demineralized water is normally considered different from distilled water which  is purified in a still i.e. by re-condensing or by boiling. It is a process which removes salt ions.

Demineralized water is free from all soluble mineral salts. It does not contain any anions or cations. Demineralised water is obtained by passing water successively through a cation exchange (in the H+ form) and an anion exchange (in the OH– form) resin.The pH value of demineralized water should be 7.0 but it is slightly acidic.

The main difference is that demineralized water is free from mineral ions, depends on the number of processes applied here to make the water fresh. In distilled water, there are less organic contaminants. Deionized does not remove unchanged molecules like bacteria and viruses. Since deionization keeps lots of scale behind the distillation, therefore, a cleaner production.

How Is It Made?

There are 2 famous ways to make demineralized water.

A demineralization plant applies Ion-exchange Resins. The special type of resins may be clear gel resins, gel polystyrene resins or purifier resins.

The cation exchange resins alter the positive ions for hydrogen ions. On the other hand, the anion resins alter negative ions for hydroxide ions.

The ultimate water consists of hydrogen and hydroxide ion which is the composition of fresh and pure water.

Electro-Deionization Plants applies Ion-exchange Resins and leave an electric current by the resins to preserve the resin regenerated. The mineral ion changes the position from the resin to the anode and a cathode.

Water passes some stages to be demineralization to get the final product. Some of the stages are including Reverse Osmosis (RO) system where water is forced and pressurized by the semipermeable membranes. It retains the mineral ions and some other impurities, filtration, and distillation.

What is the Difference between Distilled and Demineralized Water?

How To Make Demineralized Water

Demineralized and distilled water can be produced by various methods of purification. They produce a great result. Demineralized water removes minerals from water and you are left by H2O.

The only disadvantage is that it cannot remove viruses or bacteria like distilling water. Distillation is a very good method of water purification and can remove contaminants from water up to 99.9%.

Normallywe have to keep water where distillation is very effective to remove suspended bacteria, organic minerals, physical impurities, viruses, and particles. Distillation is the better way to purify water in an effective method.

Many people nowadays use the both methods to get more purified water as more as possible. The cause is that the demineralization system removes trace elements which manage to make the way by the distillation process.

Where to buy demineralized water

Very recently water softener produces distilled water up to pH value about seven but will be affected by the presence of carbon dioxide. It may reach a little acidic pH value with couples of hours. Moreover, this is an important matter to refer that he pH of ultra-pure water is stuff to measure.

Is Demineralized Water Safe for Drinking Water?

As demineralized water is produced by distillation and  Reverse Osmosis is also near to pure water, molecular H20 as possible,. Most  of the medical professionalises agree that it is naturally healthy and its merits are greater than the demerits.

The interesting matter is that new drinking water regulations are centered round ensuring pure drinking water by eliminating harmful contaminants. There is no surety that the water we drink has important minerals for our health. Historically industries are trying their best to produce pure drinking water by using different methods of purification.

We know some important points for our lives, , Among these points one is  more does not mean better. Many famous organizations and experts especially WHO are giving more importance on leaving usually occurring minerals within our drinking water.

An expert FrantišekKožíšek, M.D., Ph.D. along with polish National Institute of Public Health. Dr. Kožíšek’s reports health significance of Drinking water Magnesium and Calcium is the most eye opening and through the discussion on safe drinking water and minerals water published to date.

Our bodies are evolved over thousand years of drinking a lot of dissolved minerals. Most of them act a vital role in our overall health. Some of which are just we understand now. Distillation and Reverse osmosis strip away these naturally occurring minerals ., By making a highly aggressive and unstable form of water which has been proven to have a negative effect on our health for different varieties of reasons.

What Is Demineralised Water Used For?

Demineralized water is being used greatly for scientific and industrial purposes. Few of the common and major uses are as follow:

  • testing eg.autoclaves and laboratory applications
  • fresh water for computer chip manufacture as well as other microelectronics
  • Auto motive uses like cooling systems and leads acid batteries.
  • Laser cutting
  • High-pressure boiler feed
  • Fire extinguishers
  • Cosmetics
  • Aquariums
  • Pharmaceutical manufacturing
  • Stem raising or steam irons applications.

Demineralized water is not normally applied for drinking as the minerals in portable water give a taste as well as health benefits. The purpose of the water is to remove minerals from foods and electrolytes from the body. Sometimes demineralized water removes very important minerals from our body and water therfore it is not suggested for cooking or drinking.

Watch: How To Make Demineralized Water




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    • Thanks for your comment and time. I agreed with you. We are gradually improving the scenario as you suggested. Our intension is to provide the necessary information to the audience who are with us.


  • The title is misleading. You don’t actually tell us how we can make demineralized water, you merely present an outline of a manufacturing technique. There’s a difference to those of us who speak English as a first language.


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