ISO 10349:1992
ISO 10349:1992 Photography – Photographic-grade chemicals – Test methods – Part 3: Determination of matter insoluble in ammonium hydroxide solution
CDN $76.00
Description
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.
Edition
1
Published Date
1992-12-30
Status
PUBLISHED
Pages
2
Language
English
Format
Secure PDF
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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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