Platinum thermocouples, most commonly ANSI types R, S, and B, are precious metal elements (noble metals) that are used primarily in high temperature applications. The platinum thermocouples provide long, stable service where standard base metal thermocouple calibrations are inadequate. Since pricing of platinum thermocouples is dependent on current market valuations of precious metals, it is critical to specify the actual gauge size of the thermocouple element required. Durex Industries engineering staff can assist you with this process. Durex also maintains a platinum recovery program to reclaim your used elements and provide you with a savings on new elements or assemblies.