ISO INTERNATIONAL STANDARD 10349-9 First edition 1992-12-15 Photography - Photographic-grade chemicals - Test methods Part 9: Reaction to ammoniacal silver nitrate Photographie Produits chimiques de qualite photographique Méthodes d'essai Partie 9: Réaction au nitrate d'argent ammoniacal Reference number ISO10349-9:1992(E) ISO10349-9:1992(E) Foreword IsO (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for and non-governmental, in liaison with ISO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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. ISO/TC42,Photography. Iso 10349 consists of the following parts, under the general title Pho- tography -- Photographic-grade chemicals -- Test methods: - Part 1: 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 ISO1992 by any means, electronic or mechanical, including photocopying and microfilm, without per mission in writing from the publisher. International Organizationfor Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland ii IS010349-9:1992(E) Part 11: Determination of specific gravity 一 Part 12: Determination of density