The Starter 2100 is the bench meter of choice for those looking for a cost-effective pH meter that will provide reliable measurements time and time again. A built-in, adjustableelectrode arm for simple and convenient operation. An auto buffer recognition helps to avoid errors during the calibration process and 2-point calibration. Measurement ranges: 0 to 14 pH, -1999 to 1999 mV, 0° to 100°C. Resolution: 0.01 pH, 1 mV, 0.1°C. Accuracy: ±0.01 pH, ±1 mV, ±0.5°C. Powered by AC adapter (included).