... pH meter, ORP meter * 2-point Push-button Calibration * Large Displayer with Message Indicators * Accuracy: 0.002pH BANTE922 digital pH Meter ... into indicatedcalibration solution, press ENTER key and meter is automatically calibrated.Auto-Buffer Recognition:During calibration ... Made in UK), ORP Electrode, pH Buffers, Temperature Probe, Power Adapter BANTE922 Digital pH/ORP Meter (Using the British ...