ISO INTERNATIONAL STANDARD 1183-3 First edition 1999-09-15 Plastics Methods for determining the density of non-cellular plastics Part 3: Gas pyknometer method Plastiques - Méthodes pour deéterminer la masse volumique des plastiques non alvéolaires- Partie 3: Méthode utilisant un pycnometre a gaz ISO Reference number ISO 1183-3:1999(E) IHSunder Not for Resale ISO 1183-3:1999(E) Contents 1Scope 2 Terms, definitions, symbols, units and abbreviated terms 3Principle 4 Apparatus and materials.. 3 5 Test specimens 3 6Calibration 7 Procedure and calculation. 4 8 Precision 4 9 Test report. 4 Annex A (informative) Two-chamber pressure-measuring pyknometer @ISO1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic International OrganizationforStandardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland onal Organization for Standardization Not for Resal @ISO ISO 1183-3:1999(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 liaison with isO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission(lEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. 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. International Standard ISO 1183-3 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical properties. Together with the other parts (see below), it cancels and replaces ISO 1183:1987, which has been technically revised. IsO 1183 consists of the following parts under the general title, Plastics - Methods for determining the density of non-cellular plastics: Part 1: Immersion method, pyknometer method and titration method Part 2: Density gradient column method Part 3: Gas pyknometermethod Annex A of this part of ISO 1183 is for information only ili