Plastics. Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography - Light-scattering method1 Scope This document specifies a general method for determining the average molecular weight and the molecular weight distribution of polymers using SEC LS, i. e. size exclusion chromatography coupled with light scattering detection. The average molecular weight and the molecular weight distribution are calculated from molecular weight data and weight concentrations determined continuously with elution time. The molecular weight at each elution time

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This European Standard allows the use of innovative techniques and procedures