Many variants of this technique do not work for deviants from  Raoult's Law, or azeotropes.
One method of performing this action for air-sensitive substances uses the Perkin Triangle, and is used in the vacuum type. Many variants of this technique do not work for deviants from  Raoult's Law, or azeotropes. One type of this technique is used in oil refineries to separate more volatile compounds from crude oil - that is the "fractional type." For 10 points, name this technique in which a substance is boiled to separate its components which have different boiling points.
One method of performing this action for air-sensitive substances uses the Perkin Triangle, and is used in the vacuum type.
distillation [accept word forms such as distilling, accept vacuum distillation before mentioned]