This International Standard specifies a method for the determination of sulfur compounds, by reduction and titrimetry, in potassium hydroxide for industrial use. The method is applicable to products whose content of sulfur compounds, expressed as sulfate (S04), is equal to or greater than 5 mg/kg.
NBN T 03-198-1980 history
1980NBN T 03-198-1980 Potassium hydroxide for industrial use - Determination of sulphur compounds - Method by reduction and titrimetry