• ChemPro Scientific Instruments

Rotary Film Evaporator

ChemPro Scientific Instruments offers a Rotary Film Evaporator. This is essentially a distillation unit incorporating a rotating evaporation flask. The rotary film evaporator will evaporate solvents at a much faster rate than systems using stationary evaporation flasks. The rotation transfers a thin film of the liquid sample to the whole of the inner surface of the flask, markedly increasing evaporation rate and assisting heat transfer from the heating bath. The rotating flask and vapour tube have a sealing system which allows operation under vacuum, further accelerating the evaporation process because of the reduction in boiling point of the solvent and efficient removal of the vapour. Vacuum operation also permits heat sensitive materials to be successfully concentrated without degradation. The evaporators can be evacuated down to 1 mbar if the vacuum seals are maintained in good condition. A continuous feed facility considerably increases the capacity of the units and distillate withdrawal facilities on some units allow uninterrupted operation. Models are available from 1 ltr to 100 ltr capacity.