This standard was last reviewed and confirmed in 2021. Therefore this version remains current.
Cancels and replaces the first edition (1976). Establishes criteria for the purity of photographic-grade ammonium thiosulfate solution and specifies the tests to be used to determine the purity.
Status: PublishedPublication date: 1994-12
Edition: 2Number of pages: 4
Technical Committee: ISO/TC 42 Photography
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