ISO-3629 › Historical Revision Information
Photography - Processing Chemicals - Specifications for Potassium Metabisulfite
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This International Standard establishes criteria for the purity of photographic-grade potassium metabisulfite and specifies the tests to be used to determine the purity.
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37.040.30 (Photographic chemicals)
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Document Number
ISO 3629:1996
Revision Level
2ND EDITION
Status
Superseded
Publication Date
Oct. 15, 1996
Committee Number
ISO TC 42/WG 6