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Norm

ISO 4098:2018

Issue date: 2018 02 22

Leather — Chemical tests — Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter

ISO 4098 | IULTCS/IUC 6:2018 specifies a method of determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter. ISO 4098 | IULT...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 5 Pages
Language:
English

ISO 4098 | IULTCS/IUC 6:2018 specifies a method of determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter.

ISO 4098 | IULTCS/IUC 6:2018 is applicable to all leather types. The result obtained by this analysis depends on factors such as:

- the degree to which the leather is ground;

- the extraction temperature;

- the extraction period;

- the ratio of leather to water.

To obtain comparable results, it is consequently imperative that test conditions be accurately reproduced.

In all cases, any ammonium salts in the filtrate are included as part of the water-soluble matter and are then decomposed on ignition. Thus they contribute towards the result for water-soluble organic substances. The concentration of the ammonium salts can be determined in the filtrate separately if required.

ISO 4098:2018
2018 02 22
Leather — Chemical tests — Determination of water-soluble matter, water-soluble inorganic matter and...
Norm
ISO 4098:2006
2006 01 13
Leather — Chemical tests — Determination of water-soluble matter, water-soluble inorganic matter and...
Norm