ISO INTERNATIONAL STANDARD 706 Fourth edition 2004-10-15 Rubber latex Determination of coagulum content (sieve residue) Latex de caoutchouc Détermination de la teneur en coagulum (refus sur tamis) Reference number ISO 706:2004(E) ISO @ ISO 2004 ISO 706:2004(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 shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the @ISO2004 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 memberbody 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 ii @ ISO 2004 - All rights reserved ISO 706:2004(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (lSOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISo technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeer Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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. Raw materials (including latex) for use in the rubber industry. This fourth edition cancels and replaces the third edition (isO 706:1985), Clauses 6 and 8 of which have been thestandardhavebeenadded. @ ISO 2004 - All rights reserved iv INTERNATIONAL STANDARD ISO 706:2004(E) Rubber latex Determination of coagulum content (sieve residue) WARNING - Persons using this International Standard should be familiar with normal laboratory practice. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensurecompliancewithanynationalregulatoryconditions. 1 Scope This International Standard specifies a method for the determination of the coagulum content (sieve residue) of natural rubber latex concentrate and the majority of synthetic rubber latices. It is not suitable for XSBR latices intended for use in paper coating (see Annex A). 2 Normative references references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 123, Rubber latex Sampling IsO 3310-1, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth ISO 4576, Plastics — Polymer dispersions — Determination of sieve residue (gross particle and coagulum content) ISO/TR 9272, Rubber and rubber products Determination of precision for test method standards 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 iaboratory sampie a quantity of latex intended for laboratory inspection and testing that is representative of the lot 3.2 coagulum content sieve residue material, comprising foreign matter and flocculated rubber, retained under the conditions of the test on a stainless-steel wire cloth with an average