A rotary Evaporator can provide efficient evaporation of solvents; it is ideal for a single sample.
Key parts of a rotary evaporator system are water bath, glassware, vacuum pump, and circulating chiller. The evaporating flask rotates in the water bath, allowing for more surface area and easier evaporation. The condenser cools liquid moving through it, which allows the solvent to condense in the receiving flask. The vacuum pump lowers the boiling point of the solvent, allowing for faster evaporation.
While, since condenser is so important to a rotary evaporator, do you know how to choose the right one?
Diagonal condenser—Ideal for basic distillations of lower boiling point solvents and where height is limited.
Vertical condenser—Ideal for basic distillations of solvents with relatively low boiling points and where bench space is limited.
Vertical condenser with double jacket—Extra insulation from ambient temperature allows for higher recovery rates.
Vertical condenser for reflux—Separate centerpiece with a valve allows for more efficient condensation. Cold-trap condenser—Ideal for solvents with a high boiling point. Uses ice to cool the solvent more rapidly than the diagonal or vertical condenser.
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