ISO 418:1994

Photography — Processing chemicals — Specifications for anhydrous sodium sulfite

Photography — Processing chemicals — Specifications for anhydrous sodium sulfite

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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.

Edition1994
Published Date1994
Published ByInternational Standardization Organisation
Page Count5