This paper discusses a selected number of liquid phases which are not polysiloxanes. The emphasis is on chromatographic selectivity and precautions and not on a complete literature review. Hydrocarbon phases such as squalane, Apiezon L, Kováts C-87 Hydrocarbon, and Apiezon MH have been used but are being replaced by poly(dimethylsiloxanes) which are more thermally stable and have better batch-to-batch reproducibility. The polyether phases, particularly Carbowax 20M, are among the most popular of the liquid phases and are excellent for general purpose, particularly for alcohols, but are susceptible to oxidation at high temperatures. Polyesters are no longer as popular as they were and are being replaced by poly(phenylcyanoalkylsiloxanes) which have essentially the same chromatographic selectivity, but which are more thermally stable. Among the most thermally stable of the liquid phases are the Dexsil and Poly S series of polymers. Liquid crystals can be used to provide separation of certain isomers on the basis of molecular shape. Cyanoethylated compounds, such as TCEP [1,2,3-tris(cyanoethoxy) propane] and BCEF [N,N-bis(2-cyanoethyl)formamide] are used for the selective retention of aromatic compounds in aliphatic mixtures such as gasoline. New fluorinated liquid phases such as Fomblin YR, Fluorad FC-430, and Fluorad FC-431 are also reviewed. All of the organic liquid phases undergo oxidation to some degree at elevated temperatures. Therefore, it is highly recommended that trace oxygen, as well as trace water, be removed from the carrier gas by using suitable traps.