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[Chemical Knowledge]：How to check the hardness of water?

Read： 338 Time：18months ago Source：Transform the World with Simplicity

The hardness of water refers to the content of calcium and magnesium ions in water. Water contains a lot of calcium and magnesium ions is called hard water, and vice versa. The main components of hard water are calcium and magnesium ions, and the presence of these two ions has an impact on many aspects of water.

hard water is not harmful to the human body, but it will have a certain impact on many aspects of the family and society.

such as: hard water will shorten the life of water heaters and washing machines, this is because calcium and magnesium ions with detergent to form a precipitate, resulting in pipe blockage. In addition, hard water also has an impact on family hygiene habits. The soap cannot be completely cleaned, which can easily cause adverse reactions such as skin irritation and itching. At the same time, using hard water to wash clothes makes the clothes hard and brittle, and it is uncomfortable to wear. How does

check the hardness of water?

there are many ways to check the hardness of water.

1. common methods

use organic fluorescence method to detect the hardness of water, to use a lot of instruments and equipment, more complex and trouble.

2. simple method

quantitative determination method: will contain calcium, magnesium ion water solution, adding a small amount of composite indicator. According to the color change of the water sample solution, the content of calcium and magnesium ions in the water can be roughly detected by using the color plate pairing.

There are also some portable water quality detectors on the market that can easily detect the hardness of water, with simple operation and accuracy comparable to regular methods.

summary:

The above introduces the influence of hard water and the hardness detection method of water, which can make everyone clear which water is hard water and which water is soft water. After understanding the hardness of water, we can choose the water suitable for our family or other purposes according to our own needs. At the same time, we can also have a clear direction reference for the purification or softening of water.