With TDS pen, the detection value is high, dare not drink the tap water at home?

With TDS pen, the detection value is high, dare not drink the tap water at home? greentest eco 6 Expert: The quality of water quality can not be simply determined by the TDS value.

By searching for "TDS test pen", many student netizens have used the TDS test pen as a tool to test and analyze their own water quality. According to the market sales data ranking, the monthly sales of the top ten enterprises' online stores are more than 1,000. radioactive detection In the comment area of related research products, "The quality of my tap water has been tested for more than 600, can it still improve drinking?" and "The water in the drinking machine is about 130, can it still be drunk?" are not a few comments.

The higher the TDS, the worse the water quality?

The TDS of domestic water does not exceed 1000, which meets the national standard.

It is understood that TDS is short for "Total dissolved solids", radiation detectors for sale that is, the sum of the dissolved solids in water, which represents how many milligrams of dissolved solids are dissolved in 1 liter of water.

The TDS test pen is a tool for detecting total dissolved solids in water. The principle is that two electrodes in the tip of the pen can test the conductivity of water. The better the conductivity, the higher the TDS value, indicating the higher the total dissolved solids content in water.

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According to our national Drinking Water Safety and health service standards, the total dissolved solids content shall not be higher than 1000 mg/l. "In terms of the data development of today's tap water testing, it is in line with the relevant national standards in China."

The total soluble solid in tap water mainly refers to inorganic salts, including calcium, magnesium, sodium, potassium and other minerals required by the human body. Water containing a certain amount of calcium and magnesium plasma is beneficial to the human body, so in fact, it is not the lower the total soluble solid content of water, the better.

In general, the total amount of soluble solid in Wuhan tap water is generally between 150-250mg u 002 fl, which meets the national drinking water sanitation standards.

TDS is just one of 106 indicators of drinking water

Many people misunderstand this testing instrument, thinking that it can directly detect water quality. The responses of some merchants reinforce this misconception.

"The TDS detector pen can only detect the size of the TDS, that is, according to the amount of total dissolved solids. This is just one of 106 technical indicators for testing the availability of drinking water." Even if the TDS data you get meets our national safety standards, you can't know the data like the number of microbial studies, and natural resources can't easily say that the water quality is good or bad.

In addition, the data obtained by this simple detector pen is not accurate. In the laboratory, drying and weighing are usually carried out with precision instruments, and the weighing method is used for testing.

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