Gel permeation chromatography on dextran gels “Sephadex LH-2O” and “Sepnadex LH-60” in the solution of dimethyl formamide was used for the estimation of molecular weight and molecular weight distribution of 9-C2, 3-epoxypropyl)carbazole oligomers and for the investigation of the process of their obtaining as well. The simple numerical method of the instrumental dispersion correction as well as the principle of “the differential chromatograms” was used to interpret the gel permeation chromatography data. The method used permits to separate 9-(2, 3-epoxypropyl)carbazole oligomers within the range of molecular weights 150–15000.
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