Electrode pH ORION ROSS COMBI SODIUM ELECTRODE WATERPROOF BNC Testing Parameter Sodium Measurement Range 0.02 to Saturation pH Range 0-14 Tip Shape Flat Operating Temp Range 0 Degrees to 100 Degrees C Body Material Glass Diameter 12mm Length 120 mm Cable Length 1 m Connector BNC Amplifier none Temp Sensor No Max Pressure Atmospheric For Use With Any ISE Meter with BNC Input Shelf Life 36 mo from manufacture Junction Ceramic Recommended Use All