ISO INTERNATIONAL STANDARD 17812 First edition 2007-12-01 Paper, board and pulps Determination of total magnesium, total calcium, total manganese, total iron and total copper Papier, carton et patesDetermination de la teneur en magnesium total, en calcium total, en manganese total, en fer total et en cuivre total Reference number ISO 17812:2007(E) @ ISO 2007 IHSunder nse from IHS Not for Resale ISO 17812:2007(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. 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 that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTED DOCUMENT @ISO2007 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-1211Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISo 2007 - All rights reserved I without license from IHS Not for Resale ISO 17812:2007(E) Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Principle. 4 Reagents and materials 5 Apparatusandequipment 6 Sampling and preparation of sample.. 7 Procedure .. 8 Preparation of calibration solutions 9 Blank solution 10 Determinatior 11 Calculation 12 Precision 13 Test report Copyrght InternationalOrganizaisandardizaoghtsreserved ii from IHS Not for Resi ISO 17812:2007(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been InternationalElectrotechnicalCommission(iEC)onallmattersofelectrotechnicalstandardization. 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 17812 was prepared by Technical Committee ISO/TC 6, Paper, board and pulps. ional Organization for Standardization ISO 2007 - All rights reserved ISO 17812:2007(E) Introduction iron (Fe) and copper (Cu) into one single standard. The scope of this International Standard includes the acid- incineration residue with hydrochloric acid. This International Standard is complementary to the following InternationalStandards,whichmeasureonlytheacid-solublepartoftheelement. Iso 777, Paper, board andpulpDetermination of acid-soluble calcium Iso 778, Paper, board and pulp- Determination of acid-soluble copper Iso 779, Paper, board and pulpDetermination of acid-soluble iron Iso 1830, Paper, board and pulps - Determination of acid-soluble manganese sefromIHS Not for Resale adizai eworkingmitedwihoutlicenefrmH Not for Resale INTERNATIONAL STANDARD ISO 17812:2007(E) Paper, board and pul