Active standard | Published: 30/12/1992

ISO 10349-3:1992

Photography — Photographic-grade chemicals — Test methods — Part 3: Determination of matter insoluble in ammonium hydroxide solution
(Photographie — Produits chimiques de qualité photographique — Méthodes d´essai — Partie 3: Détermination des matieres insolubles dans une solution d´hydroxyde d´ammonium)

Available languages: English

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Detail information

Designation: ISO 10349-3:1992

Publication date: 30/12/1992

Pages: 2

Country: International technical standard

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Anotation

Description / Abstract: 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.

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