ISO INTERNATIONAL STANDARD 10349-4 First edition 1992-12-15 Photography Photographic-grade chemicals -- Test methods Part 4: Determination of residue after ignition Photographie Produits chimiques de qualité photographique Méthodes d'essai Partie 4: Détermination du résidu apres calcination Reference number ISO 10349-4:1992(E) Standardizat No reproduction or networking permitted without license from IHS Not for Resale ISO10349-4:1992(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 which a technical committee has been established has the right to be represented on that committee. International organizations, governmental 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. ISO/TC 42,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 voiatile matter - Part 9: Reaction to ammoniacal silver nitrate -Part 10:Determination of sulfide content CISO1992 mission in writing from the publisher. nternationalOrganizationforStandardizatior CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland No reproduction or networking permited without license from IHS Not for Resale ISO10349-4:1992(E) Part 11: Determination of specific gravity - Part 12: Determination of density No reproduction or networking permitted without license from IHS Not for Resale