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download between 0-24 hoursReleased: 1992
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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| Standard´s number: | ISO 10349-5:1992 |
| Pages: | 3 |
| Edition: | 1 |
| Released: | 1992 |
| Language: | English |
DESCRIPTION
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.