A ROSS™ sodium half-cell electrode with BNC connector. With its unique redox internal system, the ROSS™ electrode provides faster response, greater stability and accuracy than can be obtained from conventional sodium electrodes. Range, saturated to 0.02ppm. Temperature range of use, 0-80°C continuous, 80-100°C intermittent. Use with 42352-00 reference electrodes (8411BN)