ISO 17223:2014

INTERNATIONAL ISO
STANDARD 17223
First edition
2014-05-01
Plastics — Determination of
yellowness index and change in
yellowness index
Plastiques — Détermination de l’indice de jaunissement et du
changement de l’indice de jaunissement
Reference number
ISO 17223:2014(E)
©
ISO 2014

---------------------- Page: 1 ----------------------
ISO 17223:2014(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, 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 on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 17223:2014(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Preparation and conditioning of samples and test specimens . 2
4.1 Sample and preparation of test specimen . 2
4.2 Environment of measurement and standard condition . 2
5 Procedure. 2
5.1 General . 2
5.2 Transmission measurement method for sheet, film, moulded plaque, or disc specimens . 2
5.3 Reflection measurement method for sheet or film specimens . 3
5.4 Reflection measurement method for pellet or powder specimens . 3
5.5 Measurement requirements . 4
6 Expression of results . 5
6.1 Calculation procedure of yellowness index . 5
6.2 Calculation procedure of change of yellowness index . 6
6.3 Precision . 6
7 Test report . 9
© ISO 2014 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 17223:2014(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take
...