Objavljen
This International Standard establishes criteria for the purity of photographic-grade potassium sulfite, 650 g/I
aqueous solution, and specifies the tests to be used to determine the purity.
POVUČEN
ISO 5990:1996
OBJAVLJEN
ISO 5990:2000
90.93
Odluka o potvrđivanju standarda
6. 6. 2026.