Aktívna norma | Vydaná: 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)

Dostupné jazyky: Anglicky

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Podrobné informácie

Označenie: ISO 10349-3:1992

Dátum vydania: 30.12.1992

Stránok: 2

Krajina: Medzinárodná technická norma

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Anotácia

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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