ISO INTERNATIONAL STANDARD 10349-2 First edition 1992-12-15 Photography - Photographic-grade chemicals -- Test methods Part 2: Determination of matter insoluble in water Photographie - Produits chimiques de qualité photographique - Méthodesd'essai Partie 2: Détermination des matieres insolubles dans I'eau Reference number ISO 10349-2:1992(E) ISO 10349-2:1992(E) Foreword federation of national standards bodies (iso member bodies). The work of preparingInternationalStandardsisnormallycarriedoutthroughISo technical committees. Each member body interested in a subject for andnon-governmental,inliaisonwithIsO,alsotakepartinthework.iso collaborates closely with the International Electrotechnical Commission (lEC)onallmattersofelectrotechnicalstandardization. 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 InternationalStandardiSO10349-2waspreparedbyTechnicalCommittee 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 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 -Part8:Determinationofvolatilematter Part 9:Reaction to ammoniacal silver nitrate -Part 10:Determination of sulfide content ISO1992 s,electronic ormechanical,includingphotocopying andmicrofilm,withoutper mission in writing from the publisher International OrganizationforStandardization Case Postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland ii ISO10349-2:1992(E) - Part 11: Determination of specific gravity Part 12:Determination of density ii