5L Rotary Evaporator


5L Rotary Evaporator


Listed prices are before Extracts Academy Alumni 10% Discount.

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:


Unit Specifications:

  • Glass Material: GG-17 High Borosilicate Glass
  • Shelf Material: Aluminum Alloy
  • Pot Material: Teflon Composite, Fully sealing and heating
  • Rotary Bottle Capacity: 2L
  • Collection Bottle Capacity: 1L
  • Rotary Power: 40w (110v/60hz)
  • Rotary Speed: 0-180RPM
  • Heating Power: 1.5KW (110v/60hz)
  • Bath Temperature Control Range: 0-99c
  • Digital Temperature Control
  • Temperature Control Accuracy: +/-1C
  • Lifting Mechanism: Electric
  • Dimensions Assembled (LxWxH in.):  18x28x27
  • Weight: 55 LBS


-Does not include: Circulating chiller for condensing column.

-Requires Assembly

***Note: All units are inspected for broken glass or parts before unit is shipped. If unit arrives damaged or glass is broken (this does not include minor imperfections or scuffs in glassware), Customer MUST contact Best Value Vacs within 3 days of delivery to file a claim and receive a replacement part. If customer DOES NOT contact Best Value Vacs within 3 days of delivery responsibility for replacement parts falls on the customer and they must pay for replacement pieces.***

***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!***

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