Linn High Therm GmbH recently announced the availability of its sapphire support systems, sapphire furnace tubes and sapphire thermocouple sheets. The company's sapphire support systems are designed for fibre insulated high-temperature furnaces up to 1820C, and available sapphire furnace tubes range up to 1900C. Linn High Therm's sapphire thermocouple sheets and 2- or 4-hole tubes for thermocouples measure up to 0.75 mm. The standard length sheet tube measures 270 mm. They are gas and vacuum tight, and mechanically stable up to 1900C.
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