Objavljen
Cancels and replaces the first edition (1976). Establishes criteria for the purity of photographic-grade sodium tetraborate decahydrat and specifies the tests to be used to determine the purity.
POVUČEN
ISO 3621:1976
OBJAVLJEN
ISO 3621:1994
90.93
Odluka o potvrđivanju standarda
6. 6. 2026.