ISO INTERNATIONAL STANDARD 12460-4 Secondedition 2016-01-15 Wood-based panels Determination of formaldehyde release Part 4: Desiccator method Panneaux a base de bois-Determination du degagement de formaldehyde- Partie4:Methodeaudessiccateur Reference number IS012460-4:2016(E) ISO Intemational Organization for Standardization @IS02016 ZHEJIANG INSTOFSTANDARDIZATION C15956617 itted without license from IHS IS012460-4:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS02016,PublishedinSwitzerland 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 Ch. de Blandonnet 8. CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 copyright@iso.org www.iso.org Intemationaibr PrganizationforStandardization Uicensee-ZHEJIANG INSTOF STANDARDIZoISQ,6-All rights reserved etworking permitted without license from IHS NotforResale, 2016/3/2902:52:21 IS0 12460-4:2016(E) Contents Page Foreword ..iv 1 Scope 2 Normative references 3 Principle. 4 Reagents 5 Apparatus ..2 6 Testpieces .2 6.1 Sampling .2 6.2 Dimensions .4 6.3 Number oftest pieces .4 6.4 Number of emission tests ..4 6.5 Conditioning. .4 7 Procedure .4 7.1 Desiccatorpreparation ..4 7.1.1 Newdesiccators. 4 7.1.2 Before each determination .4 7.2 Test conditions .5 7.3 Positioning of the test pieces .5 7.4 Monitoring of test conditions. .5 7.4.1 Temperature 5 7.4.2 Background formaldehyde 5 7.5 Test duration. 5 7.6 Sample collection .5 8 Determinationofformaldehyde 5 8.1 General. .5 8.2 Principle.. 8.3 Procedure 6 8.4 Calibration curve .6 8.4.1 General 6 8.4.2 Formaldehydestandard solution ..6 8.4.3 Formaldehydecalibrationsolution .6 8.4.4 Determination ofthe calibration curve. .7 8.5 Calculation of the concentration of formaldehyde in the glass crystallizing dish in the desiccator. ..7 9 Expression ofresults .7 10 Test report .7 Bibliography 9 iii icensee=ZHEJIANG INSTOF STANDARDIZATION C15956617 vithoutlicense from IHS