Replacement pH/Conductivity/TDS Sensor Module, Single Junction, Testing Parameter Conductivity, pH, Temp, Measurement Range 0-14 pH, Tip Shape Round, Operating Temp. Range 0 Degrees to 80 Degrees C, Body Material ABS Plastic, Diameter 1 in, Length 75 mm, Cable Length Direct connect, Connector OAKTON Connector, Amplifier No, Temp. Sensor Yes, Max. Pressure Ambient, For Use With OAKTON Waterproof Multiparameter Tester 35 Series Pocket Meters, Standards NIST or USA, Shelf Life 6 mo