ISO INTERNATIONAL STANDARD 10349-11 First edition 1992-12-15 Photography - Photographic-grade chemicals -- Test methods - Part 11: Determination of specific gravity Photographie -- Produits chimiques de qualité photographique Meéthodes d'essai Partie 11: Determination de la densité relative Reference number ISO10349-11:1992(E) ISO 10349-11:1992(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 committees. Each member body interested in a subject for represented on that committee. International organizations, governmental and non-governmental,in liaisonwithIsO,alsotakepart inthework.isO collaborates closely with the International Electrotechnical Commission (lEC) on all matters of electrotechnical standardization. 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 10349-11 was prepared by Technical Com- mittee ISO/TC 42, Photography. IsO 10349 consists of the following parts, under the general title Pho- tography - Photographic-grade chemicals - Test methods: Part1:General Part 2: Determination of matter insoluble in water - Part 3: Determination of matter insoluble in ammonium hydroxide solution Part 4: Determination of residue after ignition Part 5: Determination of heavy metals and iron content Part 6: Determination of halide content -- Part 7: Determination of alkalinity or acidity Part 8: Determination of volatile matter Part 9: Reaction to ammoniacal silver nitrate - Part 10:Determination of sulfide content CISO1992 All rights reserved. No part of this publication may be reproduced or utilized in any form or by anymeans,electronic ormechanical,including photocopying and microfilm,without per mission in writing from the publisher. International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland = ISO10349-11:1992(E) 一 Part 11: Determination of specific gravity 一 Part 12: Determination of density il