In the pharmaceutical industry, the function of distilled water is due to the hypotonic effect. Wash the surgical wound with distilled water, so that the tumor cells that may remain on the wound will swell, rupture and die and lose their activity, thus preventing the tumor from planting and growing on the wound.

Natural water is impure, and usually contains various salts such as calcium, magnesium and iron, as well as organic matter, microorganisms, dissolved gases (such as carbon dioxide) and suspended solids. The nonvolatile components can be removed by distillation. Distillation, combined with the following measures, can obtain high-quality distilled water.

Extended data

The production of distilled water boils the source water and makes it evaporate, condense and recover, which consumes a lot of heat energy and the cost is not low. Other evaporated substances in the source water used to make distilled water will condense into distilled water with the production of distilled water. Such as phenols, benzene compounds that are harmful to health, and even vaporizable mercury. In order to obtain pure water or ultrapure water, it must be distilled twice and thrice, and other purification methods must be added.

In life, when it is generally related to machines and electrical appliances, the main function of distilled water is not to conduct electricity, to ensure the stable operation of machines and to prolong the service life of electrical appliances.

Some chemical experiments in school need distilled water, which has no electrolyte, free ions and impurities. You need to analyze specific problems to see whether it is based on its non-conductivity, low permeability, or no other ions and no chemical reaction.

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