ISO INTERNATIONAL STANDARD 24340 First edition 2006-03-15 Resilient floor coverings Determination of thickness of layers Revetements de sols resilients - Détermination de I'epaisseur des couches Reference number ISO 24340:2006(E) @ ISO 2006 ISO24340:2006(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The Iso Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation ?ISO2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing 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 [email protected] Web www.iso.org Published in Switzerland @ ISO 2006 - All rights reserved ISO 24340:2006(E) Foreword (IsO member bodies). The work of preparing International Standards is normally carried out through IsO technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeen International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the IsO/lEc Directives, Part 2 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 24340 was prepared by Technical Committee ISO/TC 219, Floor coverings anization for'Standal zalion'ghts reserved ii Copvriaht International Oraanization for Standardizatior ISO 24340:2006(E) INTERNATIONAL STANDARD Resilient floor coverings Determination of thickness of layers 1 Scope This International Standard describes a method for determining the thickness of different layers of resilient floor coverings 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 layer factory finishes 3 Principle The thickness of layers is measured directly by optical means. 4 Apparatus 4.1 Microscope or video microscope 4.1.1 Microscope or video microscope, having a magnification of at least 40x, equipped with a micrometric scale eyepiece for the microscope or adjustable screen lines for the video microscope, readable to 0,01 mm. 4.1.2 Microscope or video microscope, having a magnification of at least 40x, equipped with an eyepiece micrometric scale readable to 0,002 5 mm used to measure a thickness below 0,05 mm. 4.2 Lamp (light source), to illuminate the specimen configured so that the light falls on the specimen from as vertical a direction as possible. 4.3 Stage micrometer or video microscope, for calibrating the eyepiece micrometer. The scale shall have the smallest division equal to 0,01 mm and shall cover at least 2,54 mm for the microscope or video microscope referred to in 4.1.1, and the smallest division equal to 0,002 5 mm that covers at least 1 mm for the microscope or video microscope referred to in 4.1.2. 4.4 Holder (stage carrier), for holding the specimen without dis