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.