Abstract / scope
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.
ISO 3620:1994Published
Photography — Processing chemicals — Specifications for aluminium potassium sulfate
Photographie — Produits chimiques de traitement — Spécifications pour le sulfate double d'aluminium et de potassium