Today we will talk about one of those Xiaomi gadgets that are not synchronized with anything - the water tester.
Why is this useful?Water salinity is one of the criteria for both water quality and classification. The study assesses the presence of solids. In the Western tradition, the term "
Total dissolved solids " is used, the abbreviation of which gave the name to the Xiaomi gadget (like many others). Depending on the level (degree) of mineralization, it
is customary to
distinguish several types of water.
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At the same time, a low level of water salinity is poor, as well as high. In some
notes , it is noted that the systematic use of water with a low level of mineralization is capable of provoking in the long run heart, bone, etc. diseases.
Why is it uselessIn Russia, the quality of drinking water, including
bottled water, is regulated by the
requirements of SanPiN .
An attentive reader will immediately say that mineralization is only “one of” parameters that affect the quality of the fluid and therefore close attention to the particular does not help to avoid a poor-quality product as a whole. In general, it is.
It is also worth noting the "variation" in the figures. Here, for example, the norms for packaged water:

Similar numbers without fail you will find on any packaged water.

And I can say for sure that the pen will fall into this range! Running even a little further, the level of mineralization of tap water will be approximately at the same level as packaged in bottles. And running a little further ahead: the lowest level of mineralization (
according to the handle ) was at Aqua Mineral.
Units of measurement . The indicator is measured in mg / l or parts per million (ppm). 1 mg / l = 1 ppm.
Xiaomi tds penXiaomi
does everything . Therefore, the presence in the assortment of this pen, although it was surprising at the time, was not much impressed after a screwdriver, toothbrush, and so on and so forth.
We bought our TDS Pen on Ali, although about the same money the
Market has now
caught up .
Comes gadget in a rectangular white box. It becomes crumpled on the way.

On two sides of the lid: under the one that is decorated with the logo "Mi" are batteries.

On the other hand directly tracker. These are three “antennae”, two of which are of the same length and thickness, one of them is slightly thicker, but much smaller.

On the case, the only button that activates the device, after which the working side of the handle must be lowered into the water. Data is displayed instantly. After that, the handle is enough to shake it once, like a thermometer, and it will reset the readings.

As in the
case with weights (and there were questions), although the data are reproduced with enviable consistency, it seems impossible to confirm or deny the accuracy of the sensor at home, yet it’s probably not just a “set of numbers”.
Measurement with an interval in time:

For those who want to make sure that our drinking bottled water corresponds to SanPiN, we will give a few more examples. But pay attention to the "Aqua Mineral" and the table, a screenshot which we cited above. Not much ...
We would not make any long-lasting conclusions from this and attack the producers, since the level of mineralization, as was said, is only one of the quality parameters. At the same time, if you believe the same tracker and the same numbers, then the water from the tap - is no different from what is bottled.

Hmm ...
In general, take care of yourself!