A new gel permeation chromatography indirect calibration method is proposed for a polymer for which samples of known molecular weight and narrow molecular weight distribution are not available. This method is based on conversion of an experimentally obtained calibration curve for another polymer (polymer standard) through the universal calibration concept but using a new intrinsic viscosity‐molecular weight relation. This indirect calibration curve is proposed especially for the low‐molecular‐weight region, where the method based on the Mark‐Houwink‐Sakurada equation gives erroneous results.
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