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NEN-ISO 3627

Photography - Photographic grade sodium metabisulphite, anhydrous - Specification

inactive
Organization: NEN
Publication Date: 1 December 1977
Status: inactive
ICS Code (Photographic chemicals): 37.040.30
scope:

This International Standard specifies the purity requirements of, and test methods for, photographic grade sodium metabisulphite, anhydrous.

Document History

January 1, 2002
Photography - Processing chemicals - Specifications for anhydrous sodium metabisulfite
Established criteria for the purity of photographic-grade anhydrous sodium metabisulfite and specifies the tests to be used to determine the purity.
NEN-ISO 3627
December 1, 1977
Photography - Photographic grade sodium metabisulphite, anhydrous - Specification
This International Standard specifies the purity requirements of, and test methods for, photographic grade sodium metabisulphite, anhydrous.
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