Replacement pH Sensor, Replacement pH Sensor, Measurement Range -2.0 to 16.0 pH, pH Range -2.0 to 16.0 pH, Tip Shape Flat, Glass Bulb, Operating Temp. Range 32 Degrees to 122 Degrees F, Body Material ABS Plastic, Length 3 in, For Use With Oakton pHTestr 5, Junction Single