Usně - Chemické zkoušky - Směrnice pro zkoušení kritických chemikálií v usních (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN EN ISO 20137
Classification mark: 793867
Catalog number: 502720
Publication date standards: 1.9.2017
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN

Annotation of standard text ČSN EN ISO 20137 (793867):

This document gives guidelines to apply the available chemical test methods for leather. This information can be used by those involved in setting specifications for leather, especially for those parameters relating to restricted chemical substances. Lists of restricted chemicals contain many substances that are not relevant to the leather industry. Those chemical substances that are not mentioned in this document do not need to be determined, thus avoiding unnecessary analytical costs