ISO INTERNATIONAL STANDARD 787-8 Second edition 2000-10-01 General methods of test for pigments and extenders - Part 8: Determination of matter soluble in water - Cold extraction method Methodes générales d'essai des pigments et matieres de charge - Partie 8: Détermination des matieres solubles dans I'eau - Meéthode par extraction a froid Reference number ISO 787-8:2000(E) ISO @ ISO 2000 ISO 787-8:2000(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 downloading 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 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 unlikely event @ ISO2000 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.ch Printed in Switzerland @ Io 2000 - All rights reserved ndards Bodies gna/5930975001, User=bao, zhou ISO 787-8:2000(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. 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 part of isO 787 may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 787-8 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 2, Pigments and extenders. This second edition cancels and replaces the first edition (IsO 787-8:1979), which has been technically revised. IsO 787 consists of the following parts, under the general title General methods of test for pigments and extenders: Part 1: Comparison of colour of pigments Part 2: Determination of matter volatile at 105 °C Part 3: Determination of matter soluble in water- Hot extraction method Part 4: Determination of acidity or alkalinity of the aqueous extract Part 5: Determination of oil absorption value Part 7: Determination of residue on sieve Water method Manual procedure Part 8: Determination of matter soluble in water - Cold extraction method . Part 9: Determination of pH value of an aqueous suspension Part 10: Determination of density Pyknometer method Part 11: Determination of tamped volume and apparent density after tamping Part 13: Determination of water-soluble sulphates, chlorides and nitrates -Part 14: Determination of resistivity of aqueous extract Part 15: Comparison of resistance to light of coloured pigments of similar types Part 16: Determination of relative tinting strength (or equivalent colouring value) and colour on reduction of coloured pigments Visual comparison method ii