Pure water is also called the pure water, refers to accord with water as raw water of drinking water health standards, by electrodialysis method, ion exchange method, 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.
The space water on the market, distilled water is pure water.
With strong electrolyte in raw water and weak electrolytes (SiO2, CO2, etc.), remove or reduce to a certain extent. Its conductivity is commonly 1.0 0.1 mu s/cm, resistivity (25 ℃) (1.0 10.0) M Ω * cm, salt as < 1 mg/L.