ISO INTERNATIONAL STANDARD 6873 Third edition 2013-04-01 Dentistry Gypsum products Médecine bucco-dentaire - Produits a base de gypse Reference number IS0 6873:2013(E) LSO IS02013 IHS under lic itted without license from IHS Not for Resale IS0 6873:2013(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 @ IS0 2013 - All rights reserved Not for Resale IS0 6873:2013(E) Contents Page Foreword ..iv Introduction. 1 Scope. 2 Normative references 3 Terms and definitions 4 Classification .1 5 Requirements .2 5.1 Quality .2 5.2 Fluidity at pouring time (Type 1 materials only) .2 5.3 Settingtime 2 5.4 Linear setting expansion .2 5.5 Fracture (Type 1 materials only) 2 5.6 Compressive strength .2 5.7 Reproduction of detail. .2 6 Testing - Generalities .3 6.1 Sampling. .3 6.2 Test conditions .3 6.3 Mixing method .3 Test methods. .3 7.1 Visual inspection 3 7.2 Fluidity at pouring time for Type 1 materials .3 7.3 Settingtime .4 7.4 Linear setting expansion .7 7.5 Fracture. 12 7.6 Compressive strength .12 7.7 Reproduction of detail .13 8 Packaging, marking and information to be supplied by the manufacturer ..18 8.1 Packaging .18 8.2 Labelling .18 8.3 Instructions for use 19 iii vided by IHS under license with ISC ed without license from IHS Not for Resale