Pure water, clean water, can drink directly, soft water is not suitable for drinking directly.
Pure water: pure water refers to water with high chemical purity.
Can drink directly, pure water contains almost no other substances, not easy to conduct electricity, is an insulator.
It is commonly used in biological, chemical, aerospace and electronic industries.
Clean water: clean water refers to water that contains no or less harmful substances, such as bacteria, viruses, organic pollutants, heavy metals, etc., but contains beneficial substances such as minerals and trace elements, which can safely and effectively replenish water for human body.
Soft water: soft water refers to water that does not contain or contain a small amount of calcium, magnesium and other hard ions. Soft water should not be drunk directly for a long time.