ISO 16014-1:2019

Current Revision
Plastics - Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography - Part 1: General principles

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Plastics - Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography - Part 1: General principles

PUBLISH DATE 2019

This document specifies a **general method** for determining the *average molecular weight* and the *molecular weight distribution* of polymers using **size-exclusion chromatography (SEC)**.

The average molecular weight and the molecular weight distribution are calculated from a calibration curve constructed using polymer standards if using one of the SEC techniques described in ISO 16014-2 to ISO 16014-4, or from a calibration curve constructed using absolute molecular weight data if using size-exclusion chromatography coupled with light-scattering detection (**SEC-LS**) as described in ISO 16014-5.

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