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NEN-ISO 418

Photography - Sodium sulphite, anhydrous, photographic grade - Specification

inactive
Organization: NEN
Publication Date: 1 April 1978
Status: inactive
Page Count: 1
ICS Code (Photographic chemicals): 37.040.30
scope:

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

Document History

January 1, 2002
Photography - Processing chemicals - Specifications for anhydrous sodium sulfite
Establishes criteria for the purity of photographic-grade anhydrous sodium sulfite and specifies the tests to be used to determine the purity.
NEN-ISO 418
April 1, 1978
Photography - Sodium sulphite, anhydrous, photographic grade - Specification
This International Standard specifies the purity requirements of, and test methods for, photographic grade sodium sulphite, anhydrous.
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