ISO 423:1994

Photography — Processing chemicals — Specifications for hydroquinone

Establishes criteria for the purity and describes the test methods for identity tests, residue after ignition, heavy metals content, iron content, appearance of solution. Annex A describes preparation of the standard ammonium cerium(IV) hexanitrate solution.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

37.040.30

Statut:

Publié

Date de Publication:

1994-04-20

Numéro Standard:

ISO 423:1994