Fractional distillation is a technique used to purify solvents, chemicals, natural products, petroleum, biodiesel, crude oil and other materials.

The distillation column separates various components according to their boiling points. The more efficient the distillation column, the better the separation.

Fractionating can be done in either a traditional packed distillation column or in a spinning band distillation column. B/R offers both types of distillation columns.