The AccuMac AM1210 Type S thermocouple is made from reference grade platinum and platinum-rhodium alloy. It covers a temperature range of 0 to 1300°C with short term stability of 0.2°C all the way to the freezing point of copper (1084.62°C). It is commonly used as reference standard to calibrate industrial thermocouples. All thermocouple wires and parts are specially cleaned and annealed before assembly. Once assembled, every AM1210 thermocouple is fully annealed and tested again to meet the tolerance criteria as specified in the datasheet.