This International Standard establishes criteria for the purity of photographic-grade potassium sulfite, 650 g/I aqueous solution, and specifies the tests to be used to determine the purity.
Document identifier
ISO 5990:2000
Title
Photography -- Processing chemicals -- Specifications for potassium sulfite, 650 g/l solution
ISO Category
TC 42/WG 6: Photographic chemicals and processing
Publication date
2000-12-15
International Relationship
BS ISO 5990:2000 * BS ISO 5990:2000
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