The hardness of water refers to the number of calcium oxide contained in each liter of water, containing 10mg/L calcium oxide for one degree, which is mainly an indicator of the content of calcium salt and medium salt in water. The high content of calcium salt and magnesium salt in water indicates that the hardness of water will be smaller on the contrary, and sometimes the water contains more lead salt, zinc salt and iron salt, which will also strengthen the hardness.
Due to the different reasons for the formation of water hardness, it can be divided into two kinds of temporary hardness and permanent hardness. Together, these two kinds of hardness are called total hardness. If the water contains a lot of calcium, magnesium bicarbonates and carbonates, the hardness of the water increases, but the dissolved carbonates of this water can precipitate after boiling, making the water soft. Therefore, the hardness formed by this increase in carbonate content is called “temporary hardness”, also known as “carbonate hardness”. When the water contains calcium, magnesium sulfate, chloride nitrate, water hardness increases, this hardness is not reduced by water boiling, this is called “permanent hardness” also known as “non-carbonate hardness”.
According to the size of the water quality hardness can be divided into hard water and soft water two categories, fresh water hardness is less than 8 degrees, called “soft water”, higher than 8 degrees, called “hard water”. Hard water is harmful to the human body, drinking water is strong, it is likely to cause Kashin-beck disease, Keshan disease and cardiovascular disease; Hard water can also make food taste bad, in addition to washing clothes with hard water not only waste soap but also wash not clean, wash your face and bath will also have damage to the skin, hair becomes brittle, easy to break.
To sum up, water quality online monitoring is necessary! Through the T8000-WH water hardness online analyzer, the hardness of the water is tested to see whether it exceeds the 20 degrees of China’s drinking water sanitation standard.
