ISO 4047:1977
Leather; Determination of sulphated total ash and sulphated water-insoluble ash

Standard No.

ISO 4047:1977

Release Date

1977

Published By

International Organization for Standardization (ISO)

Latest

ISO 4047:1977

Scope

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.

ISO 4047:1977 history

• 1977 ISO 4047:1977 Leather; Determination of sulphated total ash and sulphated water-insoluble ash