Mineral insulation thermocouples, commonly referred to as MgO (magnesium oxide) thermocouples, are used in many laboratory processes and applications. They are available in J, K, T, E, N thermocouples and a wide range of different sheath diameters and materials. Their nature is flexible and bendable, and their relatively high temperatures make MI thermocouples suitable for many measurement applications. Temperature makes it a popular option.