Waterproof pH Electrode with ATC Single Junction Testing Parameter pH / Temp Measurement Range 0-14 pH pH Range 0-14 pH Units Tip Shape Round Operating Temp Range 0 Degrees to 80 Degrees C Body Material Epoxy Diameter 12 mm Length 130 mm Cable Length 3 ft Connector BNC/ATC OAKTON Connector Amplifier No Temp Sensor Yes Max Pressure Ambient For Use With Ion 510 Meters pH 1100 Meters pH 2100 Meters pH 5 Meters pH 510 Meters pH 6 Meters Standards NIST or USA Shelf Life 6 mo