ISO-420 › Photography -- Processing chemicals -- Specifications for potassium bromide --
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Cancels and replaces the first edition (1976). Establishes criteria for the purity of photographic-grade potassium bromide and specifies the test methods to be used to determine the purity.
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37.040.30 (Photographic chemicals)
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Document Number
ISO 420:1994
Revision Level
2ND EDITION
Status
Current
Publication Date
Oct. 15, 1994
Committee Number
ISO TC 42/WG 6