Water Quality TDS Detection Pen

Water Quality TDS Detection Pen   Main features: Multifunctional TDS tester: Test the purity of drinking water to ensure its health High precision to ensure that the reading is always accurate at various temperatures Easier to read and use Hold function: save the measurement for easy reading and recording. Automatic shutdown function: After the meter is idle for 10 minutes, the meter will automatically turn off to save battery. Measuring range: 0-9990 ppm. From 0-999 ppm, the resolution is in 1 ppm increments. From 1000 to 9990 ppm, the resolution is in 10 ppm increments, represented by a flashing "x10" image. Factory calibration: Our meter has been calibrated with 342 ppm NaCl solution. There is a TDS chart label on the back of the meter to illustrate the TDS value. The user will read the TDS water value on the LCD display above the center of the pen. It has a detection sensor, which basically functions when the metal is in contact with the measured water. After testing the water wit