ISO 418:1994

Photography — Processing chemicals — Specifications for anhydrous sodium sulfite

Establishes criteria for the purity and describes the test methods for insoluble matter content, heavy metals content, iron content, alkalinity, reaction to ammoniacal silver nitrate, thiosulfate, appearance of solution.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

37.040.30

Statut:

Annulée

Date de Publication:

1994-04-20

Numéro Standard:

ISO 418:1994