ISO 3943:1993 Preview
Photography -- Processing chemicals -- Specifications for anhydrous sodium acetate
This standard was last reviewed and confirmed* in 2015.
*Therefore this version remains current
Establishes criteria for the purity of photographic-grade anhydrous sodium acetate and describes the tests to be used to determine the purity. The test methods are concerned with assay, insoluble matter content, heavy metals content, iron content, halides content, alkalinity, acidity, appearance of solution.