CACAGOO 5 in 1 Professional Multi-parameter Combo Testing Meter PH/EC//Salinity/Thermometer Digital Multi-Function Tester Water Quality Tester

Easy to use, high accurancy. Quick and easy installation and operation. EC: Support 3-point calibration automatic identification (1413us 12.88ms and 111.8ms) Built-in 3 calibration points (1413uS/cm 12.88ms/cm 111.8ms/cm) PH:1 point (6.86) or 2 point (6.86 4.00) (6.86 9.18) or 3 point (6.86 4.00 9.18) can automatically identify the calibration solution.