KL-169-F ORP/Redox Tester   Model ORP-169F Measuring range -1999~1999mV Accuracy ±5mV Resolution 1mV Operating Temperature 0°C~50°C Automatic Temperature Compensation 0°C~50°C Power Supply 4×1.5V(AG13) Calibration Manual 1 point Dimensions 60mm×55mm×23mm Weight 62g   Close >>