ISO INTERNATIONAL 9424 STANDARD Second edition 2003-06-01 Wood-based panels Determination of dimensions of test pieces Panneauxabasedebois-Determinationdesdimensionsdes éprouvettes Reference number ISO9424:2003(E) ISO @ISO2003 ISO9424:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but 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 the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. @ ISO2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Casepostale56.CH-1211Geneva20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ISO2003—All rights reserved ISO9424:2003(E) Foreword IsO (the International Organization for Standardization) is a worldwidefederation of national standards bodies International Electrotechnical Commission (IEC)onallmattersofelectrotechnical standardization. International Standards are drafted in accordance with the rules given in theISO/lEC Directives, Part 2 adopted by the technical committees are circulated to the member bodies for voting. Publication as an This second edition is based on European Standard EN 325. It cancels and replaces the first edition measurement. @ ISO2003All rights reserved ii ISO 9424:2003(E) INTERNATIONALSTANDARD Wood-based panels Determination of dimensions of test pieces 1 Scope This International Standard specifies a method for measuring the thickness, length and width of test pieces of wood-based panels. 2 Normativereferences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including anyamendments)applies. Iso16999,Wood-basedpanels-Samplingandcuttingoftestpieces Principle The thickness, length and widthof the test piece are determined by linearmeasurement. Apparatus 4.1 Micrometer or similar measuring instrument, for thickness measurement, having flat and parallel circular anvils of diameter between 6,0mm and 20,0 mm and an operating pressure between 0,02 MPa and 0,05 MPa. The graduation of the apparatus shall allow reading to 0,01 mm. The anvil diameter selected will depend on the panel type. In principle, panels of low density and/or uneven surfaceshouldbemeasured usingthelargeranvildiameter 4.2 of at least 5 mm width, graduated to allow a reading to 0,1 mm. 5 Testpieces 5.1 Sampling and cutting Sampling and cutting of the test pieces shall be carried out in accordance with ISO 16999. 5.2 Dimensions The dimensions of the test pieces shall be in accordance with those specified in the relevant test method. IS0 2003-All rights reserved ISO9424:2003(E) 5.3 Conditioning Thetestpieces shall beconditionedtoconstantmass inanatmospherewitha relativehumidityof (65±5)% and a temperature of (20 ±2)°C. Constant mass is considered as having been reached when the results of two successive weighing operations, carried out at an interval of 24 h, do not differ by more than 0,1 % of the mass ofthetestpiece. 6 Procedure 6.1 Measuringpoints The number and positions of the measuring points shall be in accordance with the relevant International Standard for test methods. 6.2 Thickness measurement For measuring the thickness, apply the surfaces of the measuring instrument (4.1) slowly to the test piece. Measure thethickness to 0,01 mm. 6.3Lengthandwidthmeasurement For measuring the length and width, apply the jaw of the sliding caliper (4.2) slowly and without excessive Meas