5 in 1 Water Quality TesterThe digital pH tester has the functions of monitoring TDS, pH, salt content, EC and temperature. TDS measuring range: 01000 ppm, EC measuring range: 010000 US/cm, pH measuring range: 0.0114.00 pH, salinometer measuring range: 0.0025.00 %, temperature conversion function. High 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 display, which is really easy. Two Salt Content Meters The digital pH 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 clearly see the measurement in all cases. The auto-off function turns off the device after 5 minutes without any operation to save energy. Uses a 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 hydroponics water has an even better range from 0C to 60C (32F to 140F), automatic temperature compensation can ensure you get the best reading, so you can test with confidence confidence in any environment.