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ISO 10349-3:1992

Photography -- Photographic-grade chemicals -- Test methods -- Part 3: Determination of matter insoluble in ammonium hydroxide solution
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ISO 10349-3:1992

Photography -- Photographic-grade chemicals -- Test methods -- Part 3: Determination of matter insoluble in ammonium hydroxide solution

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The method is based on weighing a test portion, dissolution in water, addition of ammonium oxalate solution, diammonium hydrogen phosphate solution and ammonium hydroxide solution, allowing to stand for at least 8 h, filtering out the precipitate through filter paper, transfer of the filter paper with precipitate to a prepared crucible, burning it over a gas burner, incineration of the residue in a furnace, cooling in a desiccator, and reweighing.

SDO ISO: International Organization for Standardization
Document Number ISO 10349
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 42/WG 6
Publish Date Document Id Type View
Not Available ISO 10349-3:1992 Revision