Because people are now more and more concerned about their own drinking water health, so we all want to know their own life in the drinking water or tap water quality situation, the market also appeared a lot of water quality testing items and methods. A point of view: as long as the water through the TDS test pen, you can immediately detect the quality of the water quality and this TDS test pen can be easily purchased in the electricity business website, and from the message you can see that this product is Very satisfied with the TDS water quality test pen test results really fly it? CCTV TV channel program "is true?" On this TDS pen was tested and found that it can not detect water quality So the above point of view is also wrong.
In the "is true?" Program, Huang Xi made this question, the two guests have questioned this, because the water quality standards are more, while the detection of water quality generally by the hydrological workstation experts and technicians to complete, Is a relatively comprehensive, relatively cumbersome work process, it is unlikely that only just a TDS pen to complete the moment, then the host Beibei also through a set of experiments to detect whether the TDS pen is really useful.
In the experiment, the program group selected pure water, mineral water and tap water three different water to carry out the test, the first is directly used TDS pen test three kinds of water quality data, which pure water value is the lowest, only 1, Ideal for drinking water 'category; and tap water value is 232, are' barely acceptable tap water 'category; and the highest value of mineral water, 293, means that the TDS pen conclusion is: the water quality of mineral water is not good water, Pure water quality is the best. When the experiment here, it seems that this TDS pen is very useful.
But we all know that the criteria for judging water quality are very large. One of the most important criteria is whether the water contains pathogenic bacteria, so the second person in the experiment, the Beibei began to test the best results before Pure water to join the E. coli solution, the experiment added a total of about 500,000 fresh water E. coli, in theory, pure water at this time is not enough 'pure', and if people drink such a water, it is easy to get sick. The TDS pen has a value of only 7, which means that the conclusion that the water containing about 500,000 E. coli is still 'ideal for drinking water' is clearly wrong, so you can see that the so-called TDS Water quality test pen can not detect the quality of water is good or bad.
In fact, according to experts, TDS detector is specifically for the sum of the dissolved solids in the water, and this dissolved solid material includes molecular ionic compounds, some of which are beneficial to the body of the material is also inside, such as calcium and magnesium Ions, etc. Similarly, the water quality is an important material is a pathogen, TDS detection can not detect the minerals required by the human body, can not detect the bacteria content.
In daily life, the detection of water quality has a special water quality testing institutions, if a pen can detect water quality is good or bad can not fully trust, and by scientific research, mineral water contains the human body needs daily Material, is currently the most suitable for drinking water.For example, now use the ultrafiltration membrane technology riser water purifier, which can effectively filter the impurities and pollutants in the water, but also to retain the human body needs trace elements and minerals, Can play a positive role in everyone's health.Li Sheng water purifier, is the ideal choice for the majority of home users.
