Haofy Digital LCD Water Quality Testing Pen Portable Monitoring Tester Purity Filter TDS Meter 0 9990 PPM Temp (gray)

▷[Convenient Use] Hold function Saves measurements for convenient reading and recording. Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries Accuracy of measurement----The measuring range of the PH meter is PH 0-14, and the measuring range of the TDS meter is 0-9990ppm, 0-9990µs/cm, Accuracy ± 2% ▷[Professional use] The TDS meter tester can be used in water purifiers and filters, food (vegetable, fruits) & drink quality monitoring, pools and spas, aquariums, hydroponics etc ▷[Wide Application] Applicable industries: water laboratories, CDC, the aquaculture industry, hospitals, swimming pools, household tap water quality testing ▷[Conversion Function] Press TEMP button can shift temperature meter between fahrenheit degree and centigrade degree.