Background: Solvent evaporation is used in a broad range of laboratories such as environ- mental, clinical and industrial test- ing facilities to prepare samples for analysis. In addition, solvent evapo- ration is an important step in many chemical syntheses; as the solvent used to generate an intermediate may not be compatible with the next re- action step. In many cases, a steady stream of gas is used to evaporate the solvent. Pure, dry

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