New Bluetooth 4 In1 PH/TDS/EC/TEMP Meter Digital Water Quality Tester Smart Onli
TDS Range: 0-9999ppm. 【High Accuracy Water Tester】 High-accuracy algorithm chip and electrode of our digital water quality tester ensure an accurate and fast response. EC Range: 0-9999us/cm，10.01-19.99mS/cm.