
Photography - Processing chemicals - Specifications for potassium sulfite, 650 g/l solution
出版:International Organization for Standardization

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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.
KS M ISO 5990:2002 - Identical
GB/T 22409-2008 - Identical
BS ISO 5990:2000 - Identical
NEN ISO 5990:2001 - Identical