ISO INTERNATIONAL STANDARD 16014-4 Third edition 2019-05 Plastics Determination of average molecular weight and molecular weight distribution of polymers using size-exclusion chromatography - Part 4: High-temperature method Plastiques-Determination dela massemoleculaire moyenne et de la distribution des masses moleculaires de polymerespar chromatographie d'exclusionsterique- Partie 4:Mesurage aux températures élevees Referencenumber ISO16014-4:2019(E) ISO @ISO2019 IS016014-4:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in anyform or byany means,electronic or mechanical, including photocopying,or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address beloworIso'smemberbodyinthecountryoftherequester ISO copyright office CP 401· Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Fax:+4122749 09 47 Email: copyright@iso.org Website:www.iso.org Published in Switzerland ii IS0 2019-All rights reserved IS016014-4:2019(E) Contents Page Foreword ..iv 1 Scope ..1 2 Normative references ..1 3 Terms and definitions ..1 4 Principle .1 5 Reagents. ..2 6 Apparatus. .2 7 Procedure. .3 7.1 Preparation of solutionsofmolecularweightstandards 3 7.2 Preparationofsamplesolutions 4 7.3 Preparationof solutionsforcolumnperformanceevaluation 5 7.4 Setting up the apparatus. 5 7.5 Operatingparameters 5 7.5.1 Flowrate. 5 7.5.2 Injection masses and injection volumes. 5 7.5.3 Temperatureof,anddwell timein,injector 5 7.5.4 Column temperature 5 7.5.5 Detector sensitivity 6 7.6 Number of determinations. .6 8 Data acquisitionand processing .6 9 Expression ofresults .6 10 Precision .6 10.1 General .6 10.2 Experimentalconditions 6 10.3 Results ofinterlaboratorytests 7 11 Testreport. .7 Annex A (informative)Further information on applicabilityof method .8 AnnexB(informative)Furtherinformationonreagents .9 AnnexC(informative)Interlaboratorytest ..10 Bibliography ..14 IS02019-All rights reserved ili