Leather — Determination of sulphated total ash and sulphated water-insoluble ash
NORM herausgegeben am 1.11.1977
Bezeichnung normen: ISO 4047:1977
Ausgabedatum normen: 1.11.1977
Zahl der Seiten: 2
Gewicht ca.: 6 g (0.01 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO
Description / Abstract: To determine the total mineral content, for example within the framework of a complete leather analysis, the inorganic substances can be ascertained by calculation or determined separately. The principle consists of the carbonization of the leather followed by treatment with sulphuric acid and ashing in an open crucible. The method is applicable to all types of leather.