Reliable methods of agreement does not exist between the chromatographic retention volumes of substances and their physicochemical properties. That is why it is impossible to predict these characteristics for unstudied substances. Well-known works in this field have either qualitative character or give the results suitable only for homologous series. That is why it was very interesting to consider the available arrays of experimental data of gas-liquid chromatography by means of Koppel-Palm multi-parameter equations. The individual characteristics of this equation are determined experimentally. The final multi-parameter equation proposed by us was adequate for generalizing the retention-time data for the polyester phase of substances with different structures and also for calculating this value for other (unstudied) substances on the basis their physicochemical characteristics. The generalizing equations permit us to draw conclusions about the nature of the processes taking place during the adsorption-desorption of the substances in the stationary phase. (C) 2007 Wiley Periodicals, Inc.