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Norm
ISO 4047:1977
Issue date: 1977 11 01
Leather — Determination of sulphated total ash and sulphated water-insoluble ash
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 det...
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Valid
Publisher:
International Organization for Standardization
Format:
Digital | 2 Pages
Language:
English
ICS
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.