When Muffle furnace is used again for the first time or after a long period of deactivation, a baking furnace must be carried out. The time of the oven should be 200 ℃ four hours at room temperature. 200 ℃ to 600 ℃ four hours. When used, the furnace temperature must be up to the highest level, so as not to burn the electrothermal components.
It is forbidden to pour all kinds of liquids and easily dissolved metals into the furnace, muffle furnace preferably at below the maximum temperature of 50 ℃, at this time the furnace wire has a long life.