Objavljen
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.
POVUČEN
ISO 3620:1976
OBJAVLJEN
ISO 3620:1994
90.93
Odluka o potvrđivanju standarda
6. 6. 2026.