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What is the difference between pure water, purified water and ultra-pure water?

Aug 29, 2018


The deionized water, pure water and mean to conform to the hygienic standards for drinking water as raw water, water by electrodialysis, ion exchange, reverse osmosis, distillation and other appropriate processing methods, made the seal in the container, and do not contain any additives, colorless, transparent, can be directly drinking water, can also be referred to as the pure () on the chemical, is widely used in the experiment, and because in distillation method such as production, it is also called the distilled water.

Space water and distilled water sold on the market are pure water.

But it's better to drink less pure water because there aren't too many minerals in it.

Pure water is not conductive easily and is an insulator.

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The lead-acid battery should use pure water when replenishing water.

Purified water refers to water for medicinal use obtained from pure water by distillation, ion exchange, reverse osmosis or other suitable methods without any additives

Ultrapure water refers to the resistance rate of 10 m Ω * cm (25 ℃) of water.

It is often used in the integrated circuit industry for the cleaning of semiconductor raw materials and used utensils, the preparation of photoresist mask and the water vapor source for the oxidation of silicon wafers.

In addition, other solid state electronic devices, thick film and thin film circuits, printing circuits, vacuum tubes and other production will also use ultra-pure water.

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