ISO INTERNATIONAL STANDARD 20705 First edition 2019-12 Textiles Quantitative microscopical analysis - General principles of testing Textiles-Analyse quantitative par microscopie-Principes generauxdesessais Referencenumber IS0 20705:2019(E) ISO @ IS0 2019 IS0 20705:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 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 any form or by any means, electronic or mechanical, including photocopying, or posting below orIso's member body in the country of therequester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland i @ISo 2019- All rights reserved IS0 20705:2019(E) Contents Page Foreword iv Introduction. .V 1 Scope. 1 2 Normativereferences 1 3 Terms and definitions 1 4 Principle 1 5 Apparatus. .2 6 Reagents. .2 7 Preparationofthetest specimens .2 7.1 Selectionofthetestspecimens. .2 7.1.1 General 2 7.1.2 Loosefibres 3 7.1.3 Slivers 3 7.1.4 Yarns. 3 7.1.5 Fabrics. 3 7.2 Preparation of a test specimen slide (LM) or stub (SEM) 4 7.2.1 PreparationforlongitudinalviewforLM. .4 7.2.2 Preparationforlongitudinal viewforSEM 4 7.2.3 Preparation for cross view for LM or SEM. 4 8 Procedures. .5 8.1 General 5 8.2 LM procedure 5 8.2.1 Longitudinal view 5 8.2.2 Cross view 5 8.3 SEM procedure 5 8.3.1 Longitudinal view. 5 8.3.2 Cross view. 6 9 Calculation and expression of the results 6 9.1 Calculation based on fibre diameter measurements (Longitudinal view) .6 .1 9.2 Calculationbasedonfibreareameasurements(Crossview) 9.3 Calculating the percentage by mass of fibre component in woven fabric sample .7 ..7 10 Test report Annex A (normative) Fibre density (Conventional) .9 AnnexB (informative) Statistical data .10 Bibliography 17 IS0 2019-All rights reserved iii