"A woman was created for a man, not a man for a woman" - such a postulate ...
Additionally
Check the water quality in your home
We cannot visually determine how pure the water we drink is. At first glance, pure, clear water may contain various impurities. The TDS indicator means the total amount of dissolved in water solids... The degree of mineralization, to one degree or another, affects the quality of the water. The lower the TDS value, the lower the ion concentration heavy metals and soluble salts, and, accordingly, the better quality drinking water.
TDS tester from Xiaomi can accurately determine the degree of mineralization of water. According to the standards of the World Health Organization (WHO), potable water should not exceed the TDS value of 600 mg / l. At a mineralization level of 1000 mg / l and above, a change occurs taste water.
Checking the water quality in your home in a timely manner
IN different regions and even in different houses water quality can vary. TDS Tester from Xiaomi will help you determine exact content impurities dissolved in water. You can check both before and after water filtration, so you can assess the performance of your water purification devices. Typically, a low TDS has a low soluble content, which means the water is clean and drinkable.
High-precision technology is the key to high-precision results
Monolithic waterproof housing, low power consumption chip
The use of a TDS tester can significantly affect the mode of our water consumption. Aware of our responsibility and striving for error-free measurements throughout the entire life cycle, we pay great attention to detail and use high-precision technology.
The body of the tester is made using injection molding technology and the probe is made of stainless material (titanium). The device is also equipped with an external sensor for automatic temperature compensation (0 ~ 80 ° C). The design of the case is limited to a button and a display and does not have any holes, which ensures water resistance and prevents damage to the tester from splashes or water leakage into the case.
In order to conserve battery power, the TDS tester will automatically turn off when not in use for more than two minutes. Two AG13 round batteries are used as a power source, which can be replaced by yourself at any time. Weighing only 27.4g and featuring a compact ballpoint design, it is easy to take with you.
Instruction: Water Quality Tester
TDS tester is a device used to check the composition of water, namely the content of dissolved solids in it. After filtration of the liquid in the RO filter, the solids level can be lowered.
TDS concept
TDS is an abbreviation for the content of dissolved solids in water. The indicator assumes the content of substances in milligrams in one liter of water. Measurement unit: mg / l. TDS also indicates the amount of organic elements, coarse solids and mineral salts.
Operation of the tester
- Remove the cap, activate the power button and fill the tester cap 2/3 with the water you want to test;
- Insert the device into a cap filled with water, shake it gently, which is necessary to remove air bubbles;
- Wait a few seconds, the screen will display indicators that show the quality of the tested water.
Liquid quality values
Important! If the TDS values exceed 999, a multiple of x10 is applied.
- When finished testing the water, dry the cap of the device, then close the cap of the tester and turn off the power.
The lower the readings the device shows, the less solids are contained in the water, which means that the water is clean and usable.
Power supply
If the device does not turn on, the display does not show data, you need to replace the batteries. To do this, open the battery pack, remove the used and install new batteries.
Operating rules
- Do not expose the device to direct sun rays and precipitation. It is not recommended to leave the tester in rooms where high temperatures and high levels of humidity prevail.
- Carry the product carefully to avoid dropping it, which could cause malfunctions.
- Water is detrimental to the device.
- Do not try to repair breakdowns, change the design, or disassemble the tester yourself.
- The device is not playable.
- Do not dispose of used batteries in fire.
- Incorrectly selected batteries (with low power) can negatively affect the tester's performance. Thus, it is possible that the determination of soluble solids in water is incorrect.
- The tester is not suitable for measuring the quality of water over 80 ° C.
- The device is not able to accurately determine the quality of water that is not collected in a container. That is, the quality, for example, of water flowing from the tap, cannot be determined.
Delivery in Moscow + 10 km from MKAD
Attention!
Delivery across Russia
Dispatch of equipment is carried out no later than the next day after receipt Money to the seller's account
Attention!If you do not have an elevator, the rise to the floor is paid: from 50 to 200 rubles, depending on the dimensions and weight of the cargo. If the packaging does not pass through the door and staircases, the master will suggest lifting / transferring in parts, having opened the packaging beforehand. Payment takes place BEFORE opening and before the start of actions to lift / transfer the package. After opening, it is necessary to check the equipment for external damage, supervision over the accuracy of lifting after opening is the responsibility of the customer.
The customer can carry out the lifting work independently after paying for the simulator.
Still have questions? Call the toll free number: 8-800-1000-682
Warranty repair and return
Eligibility for warranty and serviceEvery product purchased from our store is covered by the manufacturer's distributor's warranty. Warranty and service maintenance takes place in specialized service centers, about which you can find out in the warranty card, the basis for the provision of warranty service are documents that must be transferred to the buyer when buying any equipment by a specialist, courier, forwarder delivering the equipment.
Warranty obligationsDuring the warranty period, the manufacturer provides free repair of manufacturing defects and defects that appeared during operation, subject to the Buyer's compliance with all conditions and rules of transportation, storage, installation, adjustment, maintenance and operation of the equipment established by the Supplier. Renovation work performed by an authorized qualified representative of the Supplier.
The warranty is void if:Any damage to equipment, its components, assemblies and mechanisms caused by non-compliance with the conditions and rules of the Supplier for transportation, storage, assembly, adjustment, maintenance or the operation of the equipment. Self repair, changes or upgrades of equipment, replacement of original parts made without the written permission of the Supplier. Equipment damage due to force majeure, including emergencies natural, man-made and social nature, illegal intentional and careless actions of persons aimed at causing damage to equipment.
Obligations of the Buyer:Save the consignment note, cashier's check and a warranty card. Transport, store, assemble, adjust, maintain and operate the equipment in strict accordance with the Maintenance and Warranty Manual, Operating Instructions and other recommendations of the Supplier. Notify the service department of the Supplier about the detected faults within 3 working days after the discovery of the defect
Instructions:
There are no instructions for this item.
There is no video for this product.
Water purity tester
- Convenient form
- Accurate results
- Economical consumption battery
The work of the whole organism depends on the quality of the water we drink. Unfortunately, we cannot determine whether the water is drinkable by taste, color or smell. But the Xiaomi Mi Water Quality TDS Pen Tester will do it for you. It is similar in size and shape to a pen, so you can always carry the tester with you.
The device measures the TDS in water. TDS (Total Dissolved Solids) is the total mineralization or total dissolved solids. Its level should not exceed 600, but the lower the TDS, the quality water. High level mineralization means that inorganic salts, minerals and heavy metal ions are dissolved in the liquid.
TDS and water purity
0-50 _______________ Perfectly clear water
50-100 _______________ Water is considered to be relatively clean, you can drink it
100-300 _______________ Satisfactory cleanliness values
300-600 _______________ Water contains a large number of impurities
1000 and more _________ Drinking water is life threatening
Checking for three types of impurities
Inorganic salts
Heavy metal ions
Check water wherever you need it
Xiaomi Mi Water Quality TDS Pen Tester can be taken with you to work or on a trip to check the quality of the water. It is known that in different regions tap water has different indicators, you can never be sure that you are being offered a quality drink. Even water filters sooner or later become clogged and stop performing their function. You can only trust smart electronics!
By the way, customers who decide to buy Xiaomi Mi Water Quality TDS Pen Tester from us use it not only to test drinking water. For example, houseplant lovers check the quality of the irrigation fluid - there the level of total mineralization should be high. Some people control the purity of the water in the aquarium. In short, the functions of this device are very wide.
Tap water
Bottled water
Public water
Water for watering plants
Aquarium water
High technology for accurate results
input
The body of the Xiaomi Mi Water Quality tester is protected from water ingress, even if you drop it into liquid, nothing bad will happen. A titanium stylus is located at one end, as well as the TDS measurement probe itself. By the way, the device takes into account the water temperature in its measurements in order to eliminate errors.
The device runs on two batteries. In order to save energy, the tester turns itself off 2 minutes after being turned on.
Powered by two batteries
Shows 0 to 9990 PPM
Turns off automatically after 2 minutes of standby
Compact size
Takes into account the water temperature
Stylus made of stainless titanium
Cap for water sampling
The case is protected from moisture
Energy Saving Technologies
Rapid water testing
Just click on the button
To find out the level of contamination of the water, simply fill the cap with a small amount of liquid, insert the tester and press the button. A clear number will appear on the monochrome screen - this will be the TDS indicator.
Works perfectly in conjunction with the Xiaomi Mi Water Purifier
To always have clean water in your home, use the Xiaomi Mi Water Purifier. With the help of a tester, you can check at any time that the cleaner is working correctly, and you will also know in time that it is time to change the cartridge.
For healthy way life great importance has the quality of the water we consume. Only laboratory analysis can give a complete picture of this. Recently, however, easy-to-use measuring instruments-testers have appeared, which make it possible to easily and quickly assess the quality of drinking water at home. They are called TDS meters and measure the concentration of foreign matter dissolved in water. Our review is devoted to the description of one of such devices.
What is a TDS Meter?
The English abbreviation TDS stands for Total Dissolved Salts, which can be translated into Russian as "total salt content". Since TDS meters (testers) are focused mainly on measuring the concentration of dissolved solids in water, they are often called "salt meters".
The presence of foreign insoluble impurities in water is quite simply determined by eye by the transparency of the water. However, it is not possible to estimate in this way how large the content of dissolved substances is in seemingly transparent water. As a rule, these are mineral salts, salts of alkaline earth metals, as well as a certain amount of organic substances.
There is a simple, accurate, but long-term method for determining the amount of substances dissolved in water. To do this, you need to evaporate the water and weigh the remaining dry residue. This will be an indicator of the total content of substances dissolved in water, denoted by the English term TDS. The presence of a salt meter makes it possible to do without this time-consuming procedure and mathematical calculations of the concentration of impurities.
The principle of operation of such a device is simple - it measures the electrical resistance (conductivity) of drinking water, which depends on the concentration of substances dissolved in it.
According to the standards of the World Health Organization, potable water should not exceed the TDS value of 600 mg / l. According to Russian standards, drinking water must contain no more than 350 PPM of dissolved impurities, and according to European standards, no more than 150 PPM. In this regard, you can find various recommendations on the suitability of water for drinking.
In practice, to assess water quality by PPM, it is most convenient to use the diagram given on the FilterWater.com website by a well-known American manufacturer of water purification equipment:
You can also use the following table:
| 0-5 PPM | Distilled water, salt-free. Not recommended for drinking. |
| 5-50 PPM | Crystal clear water is also not recommended for continuous use. |
| 50-100 PPM | Clean water, drinking water, water from mountain springs. |
| 100-300 PPM | Ordinary tap water and water from artesian wells, which can still be drunk without harm to health. |
| 301-600 PPM | Water with a high solute content with a specific taste in old and worn-out plumbing systems. |
| 600-1000 PPM | Dirty water with a critical solids content with an unpleasant odor and taste. |
| 1000 PPM and above | Water hazardous to health. A high level of mineralization can be associated not only with the content of potassium, sodium and hydrochloric acid salts, the ions of which have a small and short-term effect, but also with the presence of toxic ions of lead arsenide, cadmium, nitrates, etc., hazardous to health. The exception is special medicinal mineral salts. |
Household TDS is a compact device in size and appearance similar to an electronic thermometer. To determine the total salinity of water, it is enough to lower its electrodes into a vessel with water and after a few seconds the display will show the value of water salinity in PPM units.
It is important to note that you have to pay for the simplicity and ease of use with the accuracy of measurements, since the tester is tested at the factory using a solution of sodium chloride. However, at home, such averaging is quite acceptable.
Scope of water testers (TDS meters)
The main purpose of these devices is to measure the quality of drinking water at home. The results of testing the water from the faucet allow us to assess how urgent it is to use household filters before drinking such water. In the future, testers allow us to assess the efficiency of home filters, to change their filter elements in a timely manner, since the recommendations of the manufacturers on the timing of their replacement are very approximate (they often have to be changed more often than the manufacturer recommends).
Unfortunately, when describing TDS meters, dishonest marketers often mislead potential buyers by giving false information about the capabilities of this device. In the brochures you can read that the devices are used to measure the hardness of water.
The hardness of water depends on the concentration of salts of alkaline earth metals in it, mainly calcium and magnesium. The higher the concentration of these salts in the water, the harder it is. Water hardness is of great importance for aquarists, as well as for growing seedlings and watering domestic plants. However, TDS meters only measure the total content of all substances dissolved in water, not just calcium and magnesium salts. It is possible to accurately determine the hardness of water only by chemical means. IN living conditions for this, special chemical kits or test strips are used, by the color change of which one can judge the degree of water hardness.
The tester is intended primarily for home use. In field conditions, the results of measurements made with its help do not allow to unambiguously determine how suitable for drinking is water taken from natural sources (streams, rivers, lakes). Firstly, the tester measures the presence of only a limited set of substances in water, and secondly, it does not allow determining the presence of pathogenic microbes in it.
Review of the appearance of the TDS-meter Xiaomi Mi TDS PEN
This device was developed by a relatively young (founded in 2010) Chinese company Xiaomi Mi, producing different electronic devices, computers, media centers, Cell phones, audio accessories, power supplies, sports devices (pedometers, heart rate monitors, heart rate indicators, etc.), various Appliances and much more.
XIAOMI MI TDS PEN tester is sold in a neat cardboard box, in which, in addition to the device itself, there is some kind of cardboard with inscriptions in Chinese.
On the back of the box there are pictures explaining the use of the tester and the signatures under them in Chinese.
However, on the Internet you can download the user manual in English (files.xiaomi-mi.com/files/TDS_pen/ /TDS_pen_EN.pdf) and Russian (files.miui.com.ua/files/Files/Instruction/ pen RU.pdf).
The TDS tester itself resembles an electronic thermometer in appearance and size. Its dimensions: length - 15 cm, thickness - about 16 mm, weight - about 30 grams.
The body of the tester is made of plastic using injection molding technology, and the probe is made of non-corrosive titanium. The device is also equipped with a temperature sensor, which eliminates the influence of temperature on the measurement accuracy in the range from 0 to 80 ° C.
The main parts of the structure: A - measuring compartment with two electrodes and a temperature sensor; B - display and power button; B - battery compartment (2x)
The measuring compartment with electrodes and a temperature sensor is closed with a translucent protective cap (A). It can be used as a small container for the water to be tested. On the other side of the case (B) there is a battery compartment for two LR44 coin-cell batteries (supplied with the tester). Next to it is the measurement display and the ON / OFF button (B).
For mineralization values over 999 PPM, the display shows an “x10” icon, which indicates that the displayed value must be multiplied by 10.
Measuring water quality with a TDS meter Xiaomi Mi TDS PEN
The main purpose of the TDS meter is to check the quality of drinking water from the water supply, after boiling in electric kettles, at the outlet of household purification filters.
The XIAOMI MI TDS PEN tester allows you to check the water quality for the content of three types of impurities:
- soluble salts (sodium, calcium, magnesium, etc.);
- ions of organic compounds (ammonium acetate, sulfates, etc.);
- heavy metal ions (chromium, zinc, lead, copper, etc.).
The measurement process itself is very simple:
- Pour the test water into a container, which can be used as a protective cap, filling it 3/4 full. The water must be shaken in order to remove air bubbles from it. The water temperature should be no more than 80 degrees.
- Turn on the device by pressing the button and immerse the electrodes in a container with the test water.
- For about 3 seconds, the display will show the value of the mineralization (salinity) of the water.
- After completing the test, dry or wipe dry the tester cap and electrode compartment. Close the cap of the tester and turn off the power to the instrument.
| Low level | Relatively low level | Lower level | High level | Relatively high level | Dirty water |
| 0–50 | 50–100 | 101–300 | 301–600 | 600–1000 | Over 1000 |
A more indicative interpretation of measurements is illustrated in the image from the tester manufacturer's website:
But it is most convenient to evaluate the measurement results using the Water Quality Chart and the table given at the beginning of the review.
Notes on the maintenance and operation of the TDS meter XIAOMI MI TDS PEN
- Do not immerse the device completely in water.
- The tester is immersed in water only with the end containing the measuring electrodes.
- The tester does not allow you to determine the degree of mineralization of the flowing water (water must be in a container).
- Maintenance of the device consists in timely replacement of batteries and periodic washing or wiping of electrodes with alcohol, distilled or deionized water.
Xiaomi TDS Water Quality Tester
Check the water quality in your home
We cannot visually determine how pure the water we drink is. At first glance, pure, clear water may contain various impurities. TDS refers to the total dissolved solids in water. The degree of mineralization, to one degree or another, affects the quality of the water. The lower the TDS, the lower the concentration of heavy metal ions and soluble salts, and, accordingly, the better the quality of drinking water.
TDS tester from Xiaomi can accurately determine the degree of mineralization of water. According to the standards of the World Health Organization (WHO), potable water should not exceed the TDS value of 600 mg / l. At a mineralization level of 1000 mg / l and above, the taste of the water changes.
Checking the water quality in your home in a timely manner
Water quality can vary from region to region and even from house to house. The Xiaomi TDS Tester will help you determine the exact content of impurities dissolved in water. You can check both before and after water filtration, so you can assess the performance of your water purification devices. Typically, a low TDS has a low soluble content, which means the water is clean and drinkable.
High-precision technology is the key to high-precision results
Monolithic waterproof housing, low power consumption chip
The use of a TDS tester can significantly affect the mode of our water consumption. Aware of our responsibility and striving for error-free measurements throughout the entire life cycle, we pay great attention to detail and use high-precision technology.
The body of the tester is made using injection molding technology and the probe is made of stainless material (titanium). The device is also equipped with an external sensor for automatic temperature compensation (0 ~ 80 ° C). The design of the case is limited to a button and a display and does not have any holes, which ensures water resistance and prevents damage to the tester from splashes or water leakage into the case.
In order to conserve battery power, the TDS tester will automatically turn off when not in use for more than two minutes. Two AG13 round batteries are used as a power source, which can be replaced by yourself at any time. Weighing only 27.4g and featuring a compact ballpoint design, it is easy to take with you.
Since water is the basis of life and, due to the peculiarities of our physiology, we have to consume it in mandatory, it would be nice to have the opportunity, if not on a professional, then at least on a household level, to assess its quality. An inexpensive device from a fairly well-known Chinese manufacturer- Xiaomi MI TDS Pen. What kind of tester is this and how does it work - this will be our conversation.
What is being measured?
One of the most important indicators of water quality is the degree of its mineralization. This term means the amount of various inorganic impurities - individual microelements and their compounds, per unit volume of liquid. A special case is the so-called hardness salts, which are commonly called calcium and magnesium compounds. When the water is heated, they partially crystallize and are deposited in the form of scale, which we can see in the kettle and on heating elements of boilers and washing machines.
Not only hardness salts, but also other mineral impurities, and these include the now notorious heavy metals, in excess of their content, have a negative impact on the health of the consumer. One of the most striking examples is the formation of kidney stones and bladder... There are other violations as well:
- deterioration of hair;
- tooth decay, etc.
Therefore, it is extremely important to have data on the degree of mineralization of drinking water consumed for a long time.
In our country, the content of mineral impurities is usually measured in milligram equivalents per liter (meq / l). Abroad, this parameter is called Total Dissolved Solids (TDS), which translates as "total dissolved solids". The TDS of water is measured in "Parts per million" (PPM) units, which translates to "parts per million". Xiaomi TDS water tester, which is described in this material, shows the degree of mineralization in these units. The ratio of domestic and "imported" units of measurement is as follows: 1 mg-eq / l = 50.05 PPM.
What is considered the norm
Requirements for the degree of mineralization of drinking water are spelled out in the document SanPiN (sanitary rules and norms) No. 2.1.4.1074-01. According to him, the concentration of mineral impurities should not exceed 7 mg-eq / l, which is equivalent to 350 PPM. On the box in which the Xiaomi MI TDS Pen TDS Water Quality Tester is packed, there is a "Water Quality" table with the following gradation:
- Up to 50 PPM: water that can be conventionally considered distilled. It is obtained using reverse osmosis plants and distillers. Some experts do not recommend drinking water with low mineralization, believing that it can greatly disrupt the electrolyte and salt balance in the body. But this point of view has not yet been proven and it has both supporters and opponents. We will not go deep into the scientific jungle, but we note that the well-known promoter of a healthy lifestyle Paul Bragg drank distilled water and recommended drinking it. As you know, he drowned at the age of more than 80 years while surfing, which in itself testifies to remarkable health.
- Between 50 and 170 PPM: pure water that can be found in some natural sources or obtained from charcoal filter.
- Between 170 and 300 PPM: Hard water that can be considered limited acceptable.
- Between 300 and 600 PPM: Excessively hard water that is not recommended to drink.
- Between 600 and 1000 PPM: The water is not only harmful but also has a noticeable unpleasant taste.
- Above 1000 PPM: The water is not suitable for continuous use.
Description of the device
The Xiaomi water tester looks like a marker or an electrothermometer. There are caps on the ends:
- a container for batteries is hidden under one of them;
- under the other - a temperature sensor and two titanium electrodes (have anti-corrosion resistance).
The cap on the side of the sensors is designed in such a way that water can be scooped into it.
In the middle part of the building there are:
- small display;
- power button (on / off);
- button labeled "TDS" (measurements);
- clip by means of which the device can be hooked into a patch pocket.
The body itself is made of shiny plastic. As known, similar materials are fairly easy to scratch, so you can expect this TDS meter to take on a well-worn look relatively quickly. But with its cost - from 5.3 USD on the official website to 7.7 USD in some online stores - this drawback can be considered quite tolerable.
In its action, the Xiaomi TDS water tester is similar to a conventional ohmmeter: it determines the electrical conductivity of water, for which a voltage of several volts is applied to the electrodes immersed in it. Pure distilled water is known to be a dielectric. And some impurities, present in the form of ions, give it the ability to conduct electric current. The higher the content of such impurities, the lower the electrical resistance of the water.
The water analyzer detects the following substances:
- Salts of calcium, magnesium and other alkaline earth metals.
- Heavy metal ions - lead, chromium, copper, zinc, etc.
- Certain organic impurities such as ammonium acetate.
As you can see, the list is rather modest, especially if you compare it with professional analysis: in Western European countries drinking water check by 60 parameters, in the USA - by 90. Thus, the Xiaomi MI TDS Pen water tester cannot be considered as a means for a full check of water quality - bacterial contamination, benzene, cadaveric poison and many others toxic substances they are not identified.
This device is exactly a TSD factor meter. If you need to check the water, for example, from a well, you should contact a specialized laboratory.
AlthoughXiaomi The TDS water tester is equipped with a temperature sensor, it does not display the temperature. This sensor is needed in order to correctly determine the PPM indicator, because water with the same salt concentration at different temperatures will have different electrical conductivity.
The temperature accounting function is referred to as Auto Temperature Compensation. If it did not exist, then in order to obtain accurate readings, the test water would have to be heated or cooled to a certain temperature, say, + 200C.
Read also
Specifications
Tester dimensions: 150x16x16 mm.
Weight: 27.4 g.
Type of batteries: push-button, AG13 or LR44, with a voltage of 1.5 V and a total capacity of 160 mAh (2 pcs.).
Measurement accuracy: within 2%.
Test water temperature, at which the measurement error does not exceed 2%: from 0 to + 800C.
How to use the device?
The TDS meter is used very simply: after turning it on, you need to immerse the sensors in water or scoop it into the cap, and then press the "TDS" button. At the same time, a number will light up on the display showing the concentration of impurities in PPM units. The readings will change at first, but after a few seconds the final value will be established.
The matrix is designed for three digits, but if the indicator exceeds 1000 PPM, then the additional icon "x10" will light up (multiply by 10). Thus, the water tester can objectively display the degree of mineralization up to 9990 PPM inclusive.
If the device is left idle for 2 minutes, it will shut down by itself.
Who needs a Xiaomi water tester
This device will help determine the suitability of water for:
- eating;
- filling the aquarium;
- applications in appliances such as irons (steamers), steam generators and ultrasonic humidifiers.
It will be useful both for people who do not use filters and for those who have such installations: with the help of a water tester, you can accurately determine whether it is time to change the cartridges.
Video review
It is believed that if the mineralization of water after filtration is 8-10 times lower than before it, the cartridges are quite efficient.
A separate issue is hardness salts. Many people mistakenly believe that you can get rid of them by boiling. In fact, only magnesium and calcium bicarbonates turn into solid scale. Chlorides and sulfates remain dissolved and enter the body. Therefore, even after boiling the TDS of water, it is desirable to control it.
Do not think that the problem of excessive mineralization is relevant only for residents of large cities that are supplied with water from surface water bodies. Any natural source, regardless of its proximity to industrial regions, can be super-mineralized.
Even artesian water in a number of regions contains a large amount of certain elements, for example, iron, which requires taking iron removal measures before eating. The water in a mountain stream may well have a TDS of over 1000 PPM (one of the users of the Xiaomi MI TDS Pen was convinced of this), so this device will be useful for tourists as well.
Do you need such a device? Leave your opinion in the comments!
