ISO-3620 › Historical Revision Information
Photographic Grade Aluminium Potassium Sulphate Dodecahydrate - Specification
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Establishes criteria for the purity of photographic-grade aluminium potassium sulfate dodecahydrate, AlK(SO4)2·12H2O, and specifies the tests to be used to determine the purity.
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37.040.30 (Photographic chemicals)
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Document Number
ISO 3620:1976
Revision Level
1ST EDITION
Status
Superseded
Publication Date
May 1, 1976
Committee Number
ISO TC 42/WG 6