1. What is the technical principle of the rotary evaporator?
Under the condition of negative pressure, the evaporation bottle rotates uniformly in the water bath pan, and the solvent forms a film on the inner wall of the flask, increasing the evaporation area. Rapid evaporation, condensation recovery, material concentration and separation.
2. What is the core technology of the rotary evaporator?
The airtightness of the system and the continuous maintenance of high vacuum are the core of the equipment. The rotary evaporator is sealed with Teflon material and glass, which can withstand various solvents. The seal is stable and reliable for a long time, and can maintain a high vacuum above -0.098MPa.
3. What are the key factors affecting the efficiency of the rotary evaporator?
Steam temperature, vacuum degree and refrigeration temperature. Because of the heat resistance of some materials, the temperature cannot be increased endlessly. Therefore, high vacuum degree and low refrigeration temperature are the two main factors to improve efficiency (recirculating chiller can be selected to reduce the temperature).
4. What are the differences between vertical condenser and inclined condenser?
There is no obvious difference in essence. Vertical condenser is generally used for large capacity evaporator due to its small space occupation.
5. What is the basis for lifting the main engine and the water bath?
Based on the principle of convenience, stability and economy, lift the host machine below 5L and lift the water bath pan above 5L.
