ISO 10349-3:1992

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

Publication date: 30 dhj 1992

General information

Current stage: 90.93 Effective date: 20 dhj 2023

Originator: ISO

Owner: ISO/TC 42

Type: International Standard

ICS: 37.040.30

Gjuha: anglisht

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Statusi: Publikuar

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 10349-3:1992
90.93 Standard confirmed
20 dhj 2023