This International Standard specifies a titrimetric method for determining the acidity of sulfur for industrial use. The method is applicable to products having an acidity, expressed in H2S04, equal to or greater than 0.01% (m/m).
NBN T 03-384-1981 history
1981NBN T 03-384-1981 Sulphur for industrial use - Determination of acidity - Titri-metric method