Cheap meter mass, Buy Quality meter generator directly from China meter box Suppliers: 5 pcs Automatic Calibration Digital Portable Waterproof PH&ORP Meter 0.0--14.0pH and 500mV Oxidation-Reduction Potential
5 pcs Automatic Calibration Digital Portable Waterproof PH&ORP Meter 0.0--14.0pH and 500mV Oxidation-Reduction Potential Accuracy: ±5mVResolution:1 mVDisplay:4-digital LCDPower Supply:4×1.5V(AG13) (not include )Dimensions:188×35×35(mm3)Weight:118g