rotary evaporator

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(Chem.) a device used in laboratories in which a liquid is evaporated by reducing the pressure and applying heat, while rotating the liquid in a vessel such as a round-bottomed flask. The reduced pressure speeds the evaporation process and allows the evaporation to be conducted at temperatures lower than would otgherwise be possible, thus reducing decomposition of unstable substances. The rotation also serves to increase the surface area from which evaporation takes place and to reduce the effect of "bumping", the sudden burst of vaporization that can scatter liquid exposed to reduced pressure.

See also: Evaporator

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
This presentation will provide an overview of different approaches used to concentrate samples, with brief demonstrations of the instruments used, including a needle evaporator, automated evaporator, rotary evaporator, and SpeedVac concentrator.
The lab is also equipped with all the necessary equipment required for the sample preparation and running including ultra centrifuge grinding mill, rotary evaporator, forced air oven, slow speed centrifuge, and digital pH meter.
Two tenders for the supply, erection & commissioning of (a) displacers for the cyclotron, also (b) a rotary evaporator for water/ oil bath for the same.
Evaporation of the methanol, with a rotary evaporator made it possible to determine the actual weights of the crude extract.