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The difference between soft water and hard water

Release:2018-7-19 15:35:37

By "hard water" and "soft water", we mean mainly the content of calcium carbonate and magnesium carbonate, expressed as "milligram calcium carbonate/liter of water" or "PPM", which is called water hardness. We generally divide water hardness into four grades:

1.Soft water :0-60ppm

2.Slightly hard water: 60-120ppm

3.Hard water: 120-180 PPM

4.Extremely hard water: over 181ppm

What is the harm of water being too hard? First of all, it affects the taste. It's not very tasty. High hardness of water is relatively easy to produce white sediment, gradually develop into a scale, scale such as attached to the heating container or heater, will prolong the heating time, also can bring certain harm to our health. When water hardness is high, soap is not easy to foam, need to waste more detergent.


So how do we tell hard water from soft water?

Hard water contains calcium salt and magnesium salt of natural water. Generally, groundwater, such as well water and spring water, contains more salt, while surface water, such as river water and lake water, contains less salt. In hard water, calcium and magnesium can exist in the forms of carbonate, bicarbonate, sulfate, chloride, and nitrate. When hard water by calcium and magnesium bicarbonate, such as Ca (HCO3) 2 and Mg (HCO3) 2 form, referred to as hard water temporarily, when this hard water heating boiling, bicarbonate will decompose into calcium and magnesium in carbonate precipitation and remove if hard water mainly exists in the form of sulfate, nitrate and chloride and so on, is called permanent hard water, they can't use boiling method to remove.

Soft water is natural water that contains only a small amount of soluble calcium and magnesium salts, or hard water that has been softened. Natural soft water generally refers to river water, river water, freshwater lake water.

Haichen technology allows you to drink safe and healthy water!

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Statement: the above text, pictures are copyright Haichen science and technology all without permission prohibited theft, howstuffworks.com! If reprinted, please indicate the source, thank you!