Tds mainly reflects the amount of soluble solids such as calcium, magnesium, potassium and sodium in water (insoluble substances such as swimming bacteria and heavy metals in water cannot be reflected by tds). Generally, the mineral content in water is between 300 and 600, which is suitable for health. Anything below 50 can be turned into pure water, especially pure water and bottled water. Tds is about 0. So drink less pure water, and the water purifiers on the market are basically like this. Don't be fooled by the merchants, it's not suitable for drinking! My water purifier has more than TDS 400! The following is from the network:
Some people say that it is seriously wrong and misleading for the standard of healthy water use to stipulate that TDS is between 0 and 50.
Small 50 is the standard of pure water, not health.
The ideal TDS value is 300, which is recorded in the> book, written by Dr. Martin of the United States and translated by Tsinghua University.
The smaller the TDS value, the softer the water, and the probability of heart disease caused by drinking soft water is 10~ 15%. Children are prone to rickets if they drink for a long time.
At present, many areas such as Shanghai have issued documents prohibiting schools from installing pure water machines.
In foreign countries, no one uses pure water as drinking water, but it is industrial water.