HIGH-TEMPERATURE FURNACE, USE OF A SPINEL CERAMIC AND METHOD FOR CARRYING OUT T(O)C MEASUREMENTS OF SAMPLES

摘要

The invention relates to a high-temperature furnace for the T(O)C measurement of a sample, comprising a furnace housing which delimits an evaporation chamber and has a sample opening for the drop-wise addition of the sample and at least one rinsing opening for introducing a rinsing liquid. According to the invention, the furnace housing is lined with a Spinel ceramic on an inside directed towards the evaporation chamber. Because of the Spinel ceramic, the evaporation chamber is lined with a material that allows particularly high temperatures within the evaporation chamber, and thus as complete a combustion as possible, and is also very resistant to temperature changes. This allows the evaporation chamber to be cleaned with a rinsing liquid essentially at the operating temperature and deposited salts, in particular recrystallized inorganic salts, to be removed from the evaporation chamber either dissolved or undissolved in the rinsing liquid. Aging of the high-temperature furnace due to deposited salts can thus be prevented or at least considerably delayed.