Hm tds meter water purity tester with leather carry case & temperature digital ro tds-3 handheld digital tds meter + thermometer + test water specification1.purity2.digital ro tds-3 handheld tds meter is very helpful tool in checking the total dissolved solids(tds) of our water supply at your home. Get tds-3 handheld digital tds meter and thermometer at the most reasonable price. 3.an effective way to compare rejection rates and test ro membrane, water filters and water filtration performance. Features1.tds meter is perfect for all basic water testing applications.2.test the clarity of your water3.economy model is ideal for end-users.4.tds meter is effective and precise due to its advanced microprocessor technology.5.measurement range is 0-4990 ppm.6.digital thermometer built in is large and easy to read lcd screen.7.helps to test water conductivity, tds water testing, water hardness8.this item can be used in: water purifiers and filters, food (vegetable, fruits) drink quality monitoring, pools and spas, aquariums, hydroponics9.lcd display features: ideal for commercial use. Includes a carrying case with belt, clip, highly efficient and accurate due to its advanced microprocessor technology., hold function: saves measurements for convenient reading and recording., auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries., built-in digital thermometer, display: large and easy-to-read lcd screen., also available in "x10" mode: reads in increments only of 10 ppm (0-9990 ppm)., ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver. Perfect for both consumer or commercial use. Carry one in your pocket or toolbox at all times!