Objavljen
Applicable of products the SO2 content of which is equal to or more than 2 mg/kg. Based on the displacement of the sulphur dioxide present in the test portion by a current of pure nitrogen and absorption in a known volume of iodine solution. Titration of the excess of iodine with standard volumetric sodium thiosulphate solution. The diagram of the glass apparatus for absorption is shown in a figure.
OBJAVLJEN
ISO 3423:1975
90.93
Odluka o potvrđivanju standarda
14. 2. 2025.
Sumporna kiselina i oleumi za industrijsku upotrebu — Određivanje sadržaja sumpor-dioksida — Jodometrijska metoda
90.93 Odluka o potvrđivanju standarda
Ispitivanje sumporne kiseline - Određivanje sadržaja sumpor-dioksida - Volumetrijska metoda
95.99 Povučen