By ADSCIENTIS
The IGC at infinite dilution (IGC-ID) method is so called because very low amounts of molecular probes are injected. In such situation, the interactions between the molecular probes are negligible and the retention time is only depending on the interactions occurring with the investigated stationary phase. IGC-ID is applied to characterise the properties of solid surfaces but also to determine transition temperatures and characterize liquids (ex. molten polymers) for the determination of solubility parameters.