【5 in 1 Water Quality Tester】The digital pH tester has the functions of monitoring TDS, pH, salt content, EC and temperature. TDS measuring range: 0–1000 ppm, EC measuring range: 0–10000 US/cm, pH measuring range: 0.01–14.00 pH, salinometer measuring range: 0.00–25.00 %, temperature conversion function. 【Accuracy】 The high precision algorithm chip and electrode of our digital water pH tester ensure accurate and fast response. When the measured value is stable, just long press the HOLD/TEMP button to lock the measured value and take it out to view, 【Two Salt Content Meters】The digital tester can detect the salt content of food. At the same time, it can detect the salt content of sea water. Food salt content measurement range: 0.00-25.00%, water salt content measurement range of sea: 10.1 to 200.0 ppt. 【Auto-off function and large screen display】The pH tester has a backlit LCD screen that allows you to see the measurement clearly in any case. The auto shut-off function turns off the device after 5 minutes without any operation to save energy. Uses fully transparent liquid crystal (LCD) to display 4-digit values ​​and corresponding physical units. 【Automatic Temperature Compensation】 Temperature can influence measured values, digital ph meter for water hydroponics has an even better range of 0°C to 60°C (32°F to 140°F), automatic temperature compensation can ensure you get the best reading, so you can test with confidence in any any environment.