Oakton EcoTestr pH 2
Automatic temperature compensation. Waterproof, dust proof housing that floats. Easy to use; push-button calibration with auto buffer recognition. Includes transparent electrode cover/sample cup. Range: 0.0 to 14.0 pH. Low-cost pocket sized meter. Push-button calibration, HOLD function, and error messages. Power: four 1.5 Volt button cell batteries (included) 1 year warranty Instructions