Contact: Phone: 18135789881 QQ: 488014003 Guoxing Feng (busy failed to respond promptly, please understand, in a hurry to call) E-mail: 488014003@qq.com Company Address: integrity Avenue Shangqiu Yucheng County, Henan Province, the middle of three key TDS pen South Korea imported chips 3 years warranty Specifications: TDS measuring range: 0-999ppm, 999ppm above * 10 automatic temperature measuring range: 0-80 ° C Accuracy: ± 2% Battery: 1.5 * 2 (button batteries) Battery life: sustainable use of 1000 hours Dimensions: 15.5 * 3.1 * 2.3cm Weight: 76.5g (2.7OZ) Product Features: Set TDS, temperature measurement as one of the measurement functions of automatic temperature compensation → can be automatically converted into shows indication of 25 degrees TDS pen temperature value insurance shall retain the value of the HOLD function forgot to turn off the power, is not afraid of no electricity product is equipped with automatic shut-off function: TDS-3 test specification a black leather pen a pen About a TDS: TDS English abbreviation for total dissolved solids, total dissolved solids Chinese translation for, measured in milligrams / liter (mg / L), it shows that a liter of water which contain soluble solids of milligram quantities. TDS is an exotic concept in the United States, Taiwan, widely used in water treatment, measurement tools TDS TDS values ??generally used pen, the measurement principle is actually by measuring the conductivity of the water and thus indirectly reflects the TDS value. In the physical sense, the more water the lysate, the greater the water TDS value, the better the conductivity of the water, the greater its conductivity. Popular talk: TDS values ??represent the water solute impurities. TDS values ??greater, indicating large impurities in the water, on the contrary, small impurity content. Instructions: Remove the cap of a pen, the ON switch; the pen into the test solution, the solution must not exceed the height of 2cm; pen agitation in the solution until the reading is stable (2-6 seconds), TDS values ??will be displayed on the screen On, then press the HOLD key lock value. Dry water after use pen head, wash with clean water, the pen back to cover. Caution: avoid TDS pen body immersed in water, avoid direct sunlight, away from heat, to avoid the impact weight and throw touch. Detection range: water quality testing tap water, purified water, mineral water meets drinking water standards developed countries: 300PPM less water, pure water 50PPM (National Standards) below, mineral water between 100-200PPM. Specifications: lightweight pocket → weight 28 grams, the minimum volume for the market today, and lightest portable TDS meter, length 14.2 × width 2.3 × thickness 1.3 (CM). ● Wide measurement range → able to measure 1-9999PPM. ● application temperature at 0-50 degrees wide → work, can be stored at minus 30 degrees. ● LCD window → large screen LCD waterproof design, easy to watch, durable ● Long battery life → Use CR1620 3V battery 2, you can use more than 3 years, 10 minutes does not operate automatically shut down function to save battery / and replace the battery longer service life. ● designed → writings electrode can be inserted directly in the test solution to measure, pen can also be used as the test solution container to use, very convenient. ● Faster → due to delicate bare-style sensor, 5 seconds to complete a measurement. ● → ± 1% accuracy error, high precision titanium probe measuring water, water from magnetic interference. ● Automatic temperature compensation → can be automatically converted into indication Indication of 25 degrees. Application Tips: 1, pure water, mineral water after long home, TDS value rises too high when compared with the beginning of a total virus and will be a corresponding increase in the total number of colonies, this time not to drink, affecting their health; 2, pure alcohol TDS value of 0 greater than 0 indicate impure; 3, TDS that the total dissolved solids. As shown is 100, which contains 100 milligrams per liter of impurities; 4,3 floor above the user, from the top of the water storage tank, easy to cause secondary pollution, should always detect changes in TDS values ??may urged property management department regularly cleaning. 5, the washing machine should put the number of washing powder, can be detected by TDS pen experience digitized. After the cleaning process, before draining water testing shows the value of the same can be seen as clean, if showing the value of more than tap water, you should reduce the amount of detergent inputs; 6, fruits, vegetables if soaked in water, measuring its value if TDS high, can be suspected chemical contamination, should pay attention to. 7, to the swimming pool water cleanliness can be measured during the change, showing the value is too high should pay attention; 8, deep well water if the indicated value of up to 300 or more, indicating high levels of impurities; 9, in each region, and the city as a result of pipeline Different sources, different TDS values; 10, north of hard water containing calcium and magnesium ions, TDS value is high, it will furring; Hard water is generally 150 to 400 (fouling). Superhard water (if salty water) is greater than 400 (severe fouling). 11, according to the provisions of fertilizers for the first time after preparation, measuring its value, with the figure can be easily formulated in the future; 12, goldfish bowl with water, its value can be measured, knowing cleanliness. If the value of long choke large, should change the water; 13, mariculture water, its value can be measured for future preparation and testing. Note: This product is also applicable to engage in soilless cultivation, need to measure conductivity meter ion content of the nutrient solution. This product can be used to measure the concentration of the nutrient solution. Value can be subtracted from the measured secondary. TDS method is to measure the value of a tap water, then add the nutrient solution, measure its value, the second value is the subtraction of the evaluator. This pen can be measured water hardness and purity: tds over 40 will not be regarded as pure water it, the country's wells are generally more than 40, RO reverse osmosis, five filters, with no soft features, TDS values ??generally less than 35, if it is with soft features, value to be smaller. TDS value of distilled water are generally close to zero its pure water TDS values ??generally less than 10, the water depends on the various regions and different, generally between 100-400. Caution: avoid TDS pen soak into the water, avoid direct sunlight and high temperature, to avoid collision and drop the weight difference between electrical conductivity and TDS pen are two different concepts, and one is a physical quantity is power! However, the measurement is the same. They also reflect the water quality! Conductivity is a measure of the total ionic conductivity water waterproof pen is divided in two of conductivity and TDS! TDS TDS is soluble in water content values ??of solid substances * 2 is approximately equal to the value of conductivity! But not absolute TDS value means that the content of solid material was dissolved in water, in milligrams per liter. If your water filter on the water there is no adsorption of dissolved substances, then, TDS values ??do not significantly change. TDS values ??are representative of the total content of the water-soluble substances, such as: calcium, magnesium and some trace minerals in tap water TDS value is less than or equal to 1000 mg / l, water is used to purify the water of harmful sediment purifier rust, chlorine and methane and other compounds will no reduction in the content of useful substances soluble in water, so the water can be purified TDS value unchanged. TDS is a value, but it is not possible to measure whether a direct drinking water standards can be achieved.