How to use the crucible?
How to use the crucible?
When the crucible is in use, the crucible cover is usually placed obliquely on the crucible to prevent the heated object from jumping out and allow the air to freely enter and exit for possible oxidation reactions. The crucible after heated can not be placed on a cold metal table immediately to prevent it from breaking due to rapid cooling. It should not be placed on a wooden table immediately to avoid burning the table or causing a fire. The correct method is to leave it on the iron table. Cool it naturally on a tripod, or place it on an asbestos mesh to cool it slowly.
2. The main purpose of the crucible:
(1) Evaporation, concentration or crystallization of solutions
(2) Burning solid matter
3. Precautions for use:
(1) It can not be quenched after heating, remove it with crucible tongs
(2) Steam dry with residual heat when it is nearly dry
