What is Rotary evaporator?
[[File:Rotary evaporator2.jpg|thumb|300px|A Rotary evaporator (centre) with [[vacuum]] pump (left) and [[heater]] (Right).]] A '''rotary evaporator''' (or '''rotavap''')<ref name=HarwoodMoodyEOCPAP>{{cite book |author = Laurence M. Harwood, Christopher J. Moody |title = Experimental organic chemistry: Principles and Practice |edition = Illustrated |pages = 47–51 |isbn = 9780632020171 |date= 13 Jun 1989}}</ref> is commonly used in [[chemical]] laboratories to remove [[solvent]]s by [[evaporation]]. The [[liquid]] is put in a [[round-bottomed flask]] and placed in the device. The rotavap spins and heats the flask and reduces the [[pressure]] inside by creating a [[vacuum]]. The vacuum makes the liquid [[evaporate]] at a low temperature than normal. The liquid becomes a [[gas]] and is collected by cooling it so it [[condensation|condenses]] into another flask. If there are substances [[dissolution|dissolved]] in the liquid they will be left behind in when it evaporates. If [[water]] with [[salt]] dissolved in it is evaporated, then pure water and dry salt will be separated. [[Scientists]] use rotary evaporators to remove the liquid a solid is dissolved in. Rotary evaporators are often quicker to use than [[evaporating basin]]s. They can be used for [[distillation]]s. ==References== <references/> {{LaboratoryEquipment}} [[Category:Laboratory equipment]] [[Category:Chemical processes]]