What is the bump flask used for?
A bump trap, which is a secondary flask that is smaller than the main flask, is also often used during evaporation. This additional flask is placed right above the main flask so that if bumping occurs, the sample will get caught in the bump trap before getting drawn into the rest of the rotary evaporator or condenser.
What is the purpose of the bump trap attached to the rotary evaporator?
Rotary Evaporator Bump Traps is used between the vapor tube and evaporation flask on a rotary evaporator to prevent contents of the flask from being drawn into the condenser in the event of bumping. Modified bump traps provide expanded volume for reactions that have a tendency to foam excessively.
Where does the refrigerant go when it leaves the evaporator?
After leaving the evaporator, the vaporized refrigerant flows through the compressor. In the compressor, the pressure of the vaporized refrigerant is raised to a point at which it can be condensed by some relatively warm fluid, e.g. water. The compressor removes the refrigerant vapor.
What can be used instead of rotary evaporator?
All Answers (7) You can simulate a rotary evaporator by monting a system compraised of an erlenmeyer over a hot plate magnetic stirrer or a heated ballon, conected to a inclined condenser.
How do you separate ethanol and extract?
Now the extract needs to be separated from the ethanol. To separate the two, use a rotary evaporator. When connected to a vacuum pump, the rotary evaporator uses the vacuum to lower the boiling point of ethanol, resulting in a quicker evaporation. The resulting extract or oil will be completely free of ethanol.
How do you know when rotary evaporation is done?
Evaporation can also be tested for by lifting the flask out of the water bath, drying the outside with paper towels, and feeling the flask with your hand as it rotates. If solvent continues to evaporate, the flask will feel cool.
What is the purpose of a dry ice ice trap in rotary evaporation?
… Trap connects in series with a freeze dry system or vacuum evaporation system and vacuum pump to prevent contaminants from migrating into the vacuum pump. An insulated well, when dry ice and solvent are added, cools to approximately -75° C (-103° F).