Efficient separation of difficult mixtures containing closely related halogenated and polar compounds. The introduction of a fluorine group into the stationary phase causes significant changes in solute-stationary phase interaction and increases the selectivity and extra retention.

• Increased retention and selectivity for positional isomers of halogenated compounds
• Excellent selective analysis of non halogenated compounds - in particular polar compounds containing hydroxyl, carboxyl, nitro, or other polar groups