MFR: BVVSKU: RT10L
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Rotary evaporator's are used in laboratories to gently remove and recover solvents from a given mixture via evaporation. Rotary evaporation is done by heating a mixture while lowering the atmospheric pressure using a vacuum system. This lowers the boiling point of the solvent forcing a phase change from liquid to vapor. The vapor is then pulled into the path of the condenser by the vacuum system where it is re-condesened back into a liquid and falls into a seperate collection flask.
The following example illustrates the process: A mixture containing extract and ethanol must be seperated before further distillation can occur. The mixture is heated to approximately 160F inside the rotary evaporator while simultaneously pulling a vacuum. This causes the pressure inside the roto to drop into a vacuum effectively dropping the boiling point of the ethanol to a level where it switches phases from liquid to vapor. As the evaporation flask turns, the mixture creates a thin film on the interior of the flask forcing the evaporation to happen at a quicker rate. The ethanol vapor is pulled into the cold condenser where the vapor is trapped and turns back into liquid. The liquid then drops into the collection flask and can be re-used for further processing. The original extract is then left in the rotary flask for futher distillation.
To run a rotary evaporator most efficiently, you will need a chiller capable of keeping it's temperature under the given heat load, a chemical resistant diaphragm vacuum pump, and an cold trap to catch any vapors that pass through the condenser. BVV rotary evaporator's are simple, cost-effective, and durable machines that allow you to recover your solvents for use again and again. Don't let evaporation be the bottleneck in your processing!
The following table illustrates example solvnets and how their chemical composition changes by manipulating the vapor pressure:
“Continuous Feed” Operating Procedure:
This procedure is the most efficient way to run a rotovap. It will give you the fastest speeds, with minimal heat load to the chiller. This procedure is meant to be a basic starting point for anyone new to using rotovaps. It assumes you are evaporating an ethanol solution for recovery and reuse of the ethanol. Once you have mastered this procedure, you can begin adjusting the parameters to suit your specific needs.
-Does not include: Chiller, Vacuum System, Cold Trap
***Note: This item will ship by freight only.***
***Disclaimer: This unit is intended for LEGAL purposes only, to be used in accordance with local laws and ordinances. Use only in WELL VENTILATED AREAS!***