What is the TDS value of the water purifier?

The TDS value of China national drinking water standard is less than 50, which belongs to the water that can be directly drunk, while the TDS value of international drinking water standard is between 0 and 50, so generally speaking, this value should be less than 50, and generally speaking, the effluent of water purifier should be within this range.

The value of 1.TDS cannot reflect the water quality.

China is a vast country. In some places, the water quality is special, and the standard of tap water is different. Some tap water that is harmless to human body is qualified, and the TDS is as high as 1000, and some may be lower than dozens. TDS can only measure the amount of conductive substances in water, whether the water quality is harmful to people, and cannot measure harmful substances such as bacteria and viruses in water.

2.TDS value cannot measure the hardness of water quality.

The hardness of water quality is mainly determined by the contents of carbon ions and magnesium ions. TDS value reflects the total contents of calcium, magnesium, sodium, potassium ions and carbonate ions, bicarbonate ions, chloride ions, sulfate ions and nitrate ions in water. The two are not proportional.

3.TDS value can not detect the pH value of water quality.

The acidity and alkalinity of water quality is determined by the Ph value of water, that is, the concentration of hydrogen ions in water is too small, which is also proportional to the TDS value.

4.TDS value cannot represent the filtration quality of all water purifiers.

At present, the mainstream water purification technologies of water purifiers include ultrafiltration technology, ceramic filtration and RO membrane water purifier filtration. TDS value can only reflect whether the water purifier achieves the filtering effect, but the filtering effect of ultrafiltration and ceramic filtration is not obvious, because the filtering accuracy of both is above 0.0 1 micron, and conductive minerals and ions in water can pass through.

In fact, only the reverse osmosis water purifier has excellent filtration effect, which is the leading filtration accuracy in the current technology. I recommend you to buy a reverse osmosis water purifier. In recent years, Yitong, Midea and 3M water purifiers have all done well.

In addition, some areas in China, such as Inner Mongolia and Northeast China, are dry all the year round, with high salinity and alkalinity and generally high TDS.