water quality test pen tds-3 pen leather case portable mineral water tap water testing pen water purifiion machine accessories

TDS笔简介：

TDS is the abbreviation for total dissolved solids in English, and its Chinese translation is dissolved total solids. The measurement unit is mg/L, which indicates the milligram amount of soluble solid matter in one liter of water.
The concept of TDS is a foreign import, widely used in the water treatment fields of the United States and Taiwan. The measurement tool for TDS values is generally an TDS pen, and its measurement principle is actually to measure the electrical conductivity of water to indirectly reflect the TDS value. In physical terms, the more dissolved solids in water, the larger the TDS value of the water, and the better the conductivity of the water, the larger the electrical conductivity value.
In simple terms, the TDS value represents the content of dissolved impurities in water. The higher the TDS value, the greater the content of impurities in the water, and vice versa, the smaller the content of impurities.

Factors affecting the TDS value test:

Water temperature: The TDS pen is not suitable for measuring high-temperature water (e.g., boiling water).
The flow rate of water: A TDS pen cannot be used to measure water with significant agitation.

Product Usage Instructions:

Remove the pen cap and turn on the ON switch.
Insert the pen into the test solution, and the height of the solution should not exceed 2cm.
Stir the pen in the solution, and after the reading stabilizes (2-6 seconds), the TDS value will be displayed on the screen. At this time, press the HOLD button to lock the value.
After use, wipe the water off the tip of the pen, clean it with pure water, and then cover the pen cap back on.
Use caution: Avoid immersing the TDS pen completely in water, avoid direct sunlight, stay away from high temperatures, and avoid impact, pressure, and falling.

Product Usage Range:

To detect the quality of tap water, pure water, and mineral water to see if they meet the national drinking water standards: tap water should be below 300 PPM, pure water should be below 50 PPM (national standards), and mineral water should be between 100-200 PPM.

The specifications and parameters of the test pen are as follows:

● Compact and Pocket-sized → Weighs 28 grams, the smallest and lightest portable TDS instrument on the market today, measures 14.2cm long by 2.3cm wide by 1.3cm thick.
● Measurement Range → Can measure 1-9990 PPM (display above 999 PPM, the value is X10).
● Wide operating temperature range → Operates at 0-50°C, storage at -30°C.
● LCD display window → large-screen LCD display with waterproof design, convenient for viewing, durable and long-lasting
● Long battery life → Uses 2 pieces of LR44 batteries, can be used for more than 3 years, and the automatic shutdown function after 10 minutes of inactivity, saving battery power.
● Reasonable design → The pen-tip electrode can be directly inserted into the measured aqueous solution for measurement, and the pen casing can also be used as a container for the measured aqueous solution, which is extremely convenient.
● Measurement speed → Due to the delicate and bare sensor element, it can complete a measurement in 5 seconds.
● High accuracy → ±1% error, titanium alloy probe for measuring water has high precision and is immune to magnetic interference in water.
● Automatic temperature compensation → can automatically convert the display value to the value at 25 degrees.

   
Common Sense:
1. Distilled water and mineral water may have a significant increase in TDS values and total colony count after long-term storage, which makes them unfit for drinking, potentially affecting health.
2. Pure alcohol has a TDS value of 0, while a value greater than 0 indicates impurity.
3. TDS stands for Total Dissolved Solids. If the value is 100, it means there are 100 milligrams of impurities per liter.
4、3楼 above the user, by the roof water tank water supply, easy to cause secondary pollution, should often detect the change of TDS value, can urge the property management department to clean regularly.
5. How much laundry detergent to put into the washing machine can be digitized by using a TDS pen. After the cleaning process, if the reading before draining is the same as that of tap water, it can be considered clean. If the reading is higher than that of tap water, it should be reduced.
6. If fruits and vegetables are soaked in water and the TDS value is high, it may be suspected of chemical pollution, which should be taken seriously.
7. During the process of swimming in the pool, it is possible to measure the change in the cleanliness of the pool water. If the reading is too high, it should be taken seriously.
8. If the reading of deep well water is over 300, it indicates that the content of impurities is too high.
9. Due to the different pipes and water sources in each region and city, the TDS values are different.
10. Hard water in the north contains calcium and magnesium ions, leading to a high TDS value, which can cause scale formation; general hard water is 150-400 (scale formation). Super hard water (if saltwater) is greater than 400 (serious scale formation).
11. After the flower fertilizer is prepared according to the regulations for the first time, measure its value, and use this number to facilitate future preparation.
12. The water in the goldfish tank can be measured to determine its cleanliness. If the value is increasing significantly, it is necessary to change the water in time;
13、Sea farm water can be measured to prepare for future mixing and testing.
Note: This product is also suitable for soil-less cultivation, requiring an electrical conductivity meter to measure the ion content of the nutrient solution. This product can be used for measuring the concentration of the nutrient solution. Simply subtract the values measured twice. The method is to first measure the TDS value of tap water, then add the nutrient solution and measure its value, and the difference between the two values is the desired value.
   
This pen can measure the hardness and purity of water.
If the TDS (Total Dissolved Solids) is over 40, it's no longer considered pure water.
The well water in the countryside is usually over 40 degrees Celsius.
RO reverse osmosis, five-stage filtration, without softening water function,
The TDS value should generally be less than 35, and if the device has a soft water function, the value should be even lower.
The TDS value of distilled water should generally be close to 0.
Pure water has a TDS value that is generally less than 10.
The price of tap water varies by region, usually ranging from 100 to 400 yuan.
Use caution: Avoid soaking the TDS pen in water, avoid direct sunlight and high temperatures, avoid impact and pressure, and avoid falling. The difference between conductivity and TDS pen.
These are two different concepts, one is a physical quantity and the other is electric charge! However, the measurement is the same. They both reflect the quality of the water! Conductivity measures the conductivity ability of the total ions in water, and water-proof pens are divided into conductivity and TDS. TDS is the content of dissolved solid matter in water. The TDS value * 2 is roughly equal to the conductivity value! But it is not absolute.
   
TDS value refers to the content of dissolved solid matter in water, measured in milligrams per liter. If your water purifier doesn't have much adsorption effect on dissolved substances in the water, the TDS value won't show any significant change.
   
TDS value represents the total content of soluble substances in water, such as calcium, magnesium ions, and some trace minerals, etc. The TDS value of tap water is less than or equal to 1000 mg/L. A water purifier is used to purify water to remove harmful sediment, rust, residual chlorine, and methane compounds. It will not reduce the content of beneficial soluble substances in water, so the TDS value of the purified water can remain unchanged. TDS is a number, but it is not a standard for measuring whether the water can be directly consumed.