Fractionating Columns
Addition Funnels
Balances
Chromatography Columns
Condensers
Dean-Stark Apparatus
Desiccators
Distillation Receivers
Filtration
Flasks
Fractionating Columns
Lab Jacks
Manometers
Melting Point Apparatus
Pipettes
Rotary Evaporator
Separating Funnels
Soxhlet Extractor
Still Heads
Stoppers and Adapters
Volumetric Analysis
There are several types of fractionating column but the most common is the Vigreux column (1) which has indentations designed to force condensing liquid into the rising vapour. This is necessary to achieve the equilibrium needed for efficient fractionation. The Vigreux column is often incorporated into a still head (2). Alternative columns are packed with glass beads (3) or open columns (4).