How to cool the muffle furnace after use?

Generally speaking, it is not necessary to turn off the power to cool down during the process, just open the furnace door directly. As for the temperature at which the sample is taken out, it also depends on the operating procedures. Sometimes the sample is taken out to cool down when the constant temperature time in the muffle furnace is sufficient, and then placed in the desiccator when it is close to room temperature.