Orion Star™ A121 Portable pH Meter, -2 to 16 pH Range, ±0.01 pH Accuracy

Combine simplicity and accuracy in a waterproof housing, with this meter. Large LCD display shows various readings along with temperature in °F or °C, battery life, electrode status, and calibration information. Features calibration with automatic buffer recognition, recall of calibration slope data, and memory up to 50 data points. Batteries included, or run meter on AC power with purchase of universal power adapter (sold separately). 3 year warranty.