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A fractionating column or fractional column ,is a glass tube designed with many deep pointed intendations in its sidewall and two taper joints at both ends, used in laboratory fractional distillation in organic chemistry.This distillation column with vigreux belongs to air-cooled type condenser.Used in chemistry experiments involving fractional distillations or for separating two parts of a mixture based on their boiling points.
With top outer and bottom inner joints.The lower joint usually fits a distillation flask with standard female joint,the upper joint connects a three way distillation adapter.