คุณลักษณะ

• It is an instrument for sample purification by sublimation.
• A cooling agent such as dry ice, acetone, water, or ice is placed in the center tube, and the flask is heated and sublimation is promoted by gently reducing pressure from the upper branch tube, and sublimation crystals adhere to the wall of the cooling tube.
• Water or refrigerant is circulated for cooling.
• When preparing the sample into the flask, it seems to be better to stick it evenly on the inner wall of the flask as a solution rather than as a solid.