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>ISO 10349-5:1992 - Photography — Photographic-grade chemicals — Test methods — Part 5: Determination of heavy metals and iron content
sklademVydáno: 1992-12-30
ISO 10349-5:1992 - Photography — Photographic-grade chemicals — Test methods — Part 5: Determination of heavy metals and iron content

ISO 10349-5:1992

ISO 10349-5:1992 - Photography — Photographic-grade chemicals — Test methods — Part 5: Determination of heavy metals and iron content

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Označení normy:ISO 10349-5:1992
Vydání:1
Vydáno:1992-12-30
Počet stran (Anglicky):3
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ISO 10349-5:1992

The method is based on preparation of test samples and heavy metals standard solutions, preconditioning them, addition of sodium sulfide solution (for determination of heavy metals) or 1,10-phenanthroline reagent (for determination of iron), dilution with water, mixing well, transfer to two Nessler colour-comparison cylinders, and comparing the colour of both solutions.

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