... Oxidation-Reduction Potential and ion concentration or content in liquids. It widely used in various water quality research and quality control applications ... pointsTemperature Compensation: 0 to 100°C, Manual or AutomaticBuilt-in Ion mode: Na, Ag, K, NH3, CL, F, Ca, No3, Pb, ... (W)×60(H)mmWeight: 1.7kgMeter Included:pH Electrode (Made in UK), ORP Electrode, pH Buffers, Temperature Probe, Power Adapters ...