Assertion: simple distillation | /r/CapableOf | improve mixture separation
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Source sentences:
text: To improve mixture separation, simple distillation is often combined with countercurrent fractionation; here the vapors formed in the still are partly condensed in a fractionating column, the condensate (reflux) is continuously returned to the still, and the vapors remaining after the fractionating column go to a condenser, from which the distillate drops into the collector.