ThermocoupleStandards-platinum-alldaium These Platinum / Palladium Thermocouples (Pt/Pd) are manufactured by the National Physical Laboratory (NPL) who have developed a novel physical mechanism which mitigates the mechanical stresses caused by the different thermal expansion of Pt and Pd wires. *0°C to 1500°C *Superior Stability *Gas Tight Assembly *Premium Grade Wire