Abstract Preview

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.

General information

  • Status :  Published
    Publication date : 1992-12
  • Edition : 1
    Number of pages : 2
  • :
    ISO/TC 42
  • 37.040.30
    Photographic chemicals

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