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Norm
ÖNORM EN ISO 4098
Issue date: 2018 10 15
Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter (ISO 4098:2018)
This document specifies a method of determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter.
It is applicable to all leath...
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Valid
Publisher:
Austrian Standards International
Format:
Digital | 10 Pages
Language:
German
| English
| Download GER/ENG
Optionally co-design standards:
ICS
This document specifies a method of determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter.
It 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.
ÖNORM EN ISO 4098
2018 10 15
Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and...
Norm
↖
ÖNORM EN ISO 4098
2006 04 01
Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and...
Norm
ÖNORM S 7008
1982 09 01
Testing of leather; determination of the contents of organic materials extractable by washing out (l...
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Leather — Chemical tests — Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter