ISO 418:1994Withdrawn

Photography — Processing chemicals — Specifications for anhydrous sodium sulfite

Photographie — Produits chimiques de traitement — Spécifications relatives au sulfite de sodium anhydre

This edition has been replaced by ISO 418:2001.

Abstract / scope

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.

Life cycle

Replaces

ISO 418:1976WithdrawnPhotographic grade sodium sulphite, anhydrous — SpecificationInternational Standard · Published 1 Jul 1976 · ISO/TC 42

Replaced by

ISO 418:2001PublishedPhotography — Processing chemicals — Specifications for anhydrous sodium sulfiteInternational Standard · Published 20 Dec 2001 · ISO/TC 42