195, what are the commonly used heating equipment in the laboratory?

What are the commonly used heating equipment in the laboratory? The commonly used heating equipment in the laboratory includes electric furnace, high-temperature furnace, electrothermal constant-temperature drying box, electrothermal plate, sand bath, electrothermal constant-temperature water bath pot and so on. Matters needing attention in the use of electric furnace: (1) The power supply voltage should be consistent with the voltage specified in the electric furnace itself. (2) The continuous use time of electric furnace should not be too long, which will shorten its service life. (3) If the heating container is metal, don't. In order to avoid electric shock or short circuit, the furnace wire will be burned out. (4) The concave channel of the furnace plate should be kept clean, and the burnt sundries should be removed in time to protect the good heat transfer of the furnace wire and prolong its service life.