ISO 10349-5:1992

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

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.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

37.040.30

Statut:

Publié

Date de Publication:

1992-12-29

Numéro Standard:

ISO 10349-5:1992