Unified chromatography from the mobile phase perspective

Liquid, Subcritical Fluid, Enhanced Fluidity, Supercritical Fluid, Hyperbaric, Solvating Gas, and Gas Chromatographies are merged into a continuous model with no behavior gaps and no discontinuities. The distinctions between individually named techniques vanish in this unified model. It is based on the general phase behavior of Type I binary mixtures tin which the two components are miscible as liquids). Conventional Gas Chromatography and Liquid Chromatography are simply limiting cases of the unified model and exist when the column-outlet pressure is ambient. Seeking the optimal conditions within the allowed parameter space leads to significant separation improvements. A unified chromatograph, with only a few new capabilities not already found on a conventional liquid chromatograph, already exists commercially and can perform all of the named techniques except conventional GC.