These Thermo Scientific® Orion™ electrodes (PH4294-1/-2SC) combine a platinum redox and a silver/silver chloride reference electrode in one body. PH4294-1/-SC has a glass body with a ceramic junction and PH4294-2/-2BN is an epoxy body electrode with a sleeve junction. Both can be used to make direct measurements of redox potentials or to perform potentiometric titrations. They are not designed for amperometric or constant current titrations, such as the Karl Fischer. Recommended for measurement of reduction/oxidation potential and Redox titrations. PH4294-3BN and PH4294-4BN Triodes consist of a platinum redox sensor, a silver/silver chloride internal reference systems and a built-in thermistor for Automatic Temperature Compensation (ATC). PH4294-3BN is a refillable electrode, which uses Orion 900011 or 900001 filling solutions. PH4294-4BN is a non-refillable low maintenance gel-filled electrode. Both models have the capability to measure ORP and Temperature simultaneously without a separate reference electrode. Direct measurements of redox potentials or potentiometric titrations can also be performed with these ORP Triode electrodes. These Triodes are not designed for amperometric or constant current titrations, such as Karl Fischer analysis. Recommended for measurement of oxidation/reduction potential and temperature in water/wastewater, metal plating, and biotech. U.S. Standard and BNC Electrodes have 1 m cable. Screw cap connector requires separate cable.