What do you know about water?

Water is a colorless and odorless liquid. 72% of the earth's surface is covered with water.

Water hardness is an important criterion for evaluating water quality and has a very important impact on drinking water and industrial water. Water hardness that is too high may form scale and affect product quality. Therefore, in order to determine the water quality and carry out water-related treatment, the calcium and magnesium ions in the water must be measured, that is, the total hardness of the water is tested.

Monitoring and analysis of total water hardness is one of the important tasks in water quality testing. It not only affects the quality of water, but also affects the safety of people's production and life. Today, with the rapid development of science and technology, the application of more detection technologies has improved the accuracy of total water quality detection and ensured the safety of water quality and the quality of use.

Extended information:

Pollution of fresh water resources has spread across the country. If we look at the per capita possession of fresh water resources, China's water shortage mainly affects the northern region, then the pollution of fresh water resources is a nationwide problem.

And the more water-rich areas, big cities, and densely populated areas, the more serious the pollution. As a result, water-rich areas experienced water shortages. This is a more serious problem for China's freshwater resources.

Inefficient water use and over-exploitation coexist. First of all, water use efficiency is low, and the more water-scarce places, the lower the efficiency. For example, in the Yellow River Basin, which is severely short of water, flood irrigation is still widely used for agricultural irrigation.