CEN/TC 289/WG 3 - Fastness test methods

ISO 20701 | IUF 427:2017 specifies a method for determining the colour fastness to saliva of all kinds of leathers, independent of the colouring procedure applied.
The method uses an artificial saliva solution to simulate whether colouring materials can migrate from leather to the mouth or to the mucous membranes.

ISO 15701:2015 specifies a method for assessing the propensity of dyes and pigments to migrate from leather to a synthetic substrate by determining the transfer of colour from the leather to white plasticized poly(vinyl chloride) in contact with it. This method is suitable for leather of all kinds at any stage of processing.

ISO 11641:2012 specifies a method for determining the colour fastness to perspiration of leather of all kinds at all stages of processing. It applies particularly to gloving, clothing and lining leathers, as well as leather for the uppers of unlined shoes.
The method uses an artificial perspiration solution to simulate the action of human perspiration. Since perspiration varies widely from one individual to the next, it is not possible to design a method with universal validity, but the alkaline artificial perspiration solution specified in ISO 11641:2012 will give results corresponding to those with natural perspiration in most cases.

ISO 11640:2012 specifies a method for determining the behaviour of the surface of a leather on rubbing with a wool felt. It is applicable to leathers of all kinds.

ISO 11642:2012 specifies a method for determining the colour fastness to water of leather of all kinds at all stages of processing.

This International Standard specifies a method for determining the amount of colour transferred from the surface of coloured leather to other surfaces by rubbing with a white cotton cloth.
Two tests are carried out, one with a dry rubbing cloth and one with a wet rubbing cloth.
The method is applicable to all types of coloured leather. Since after treatments of the leather as well as surface finishes can affect the degree of colour transfer, the test can be made before and/or after such treatments.

ISO 17131:2012 specifies a method using microscopy to identify leather and distinguish it from other materials. The method is not applicable for identifying specific leathers (e.g. sheep leather).

ISO 14931:2004 gives recommended values and related test methods for apparel leather, excluding furs. It also specifies the sampling and conditioning procedures to be used for laboratory samples.
It does not apply to leather materials with coating thicknesses exceeding 0,15 mm.

ISO 19076:2016 provides a method for the measurement of the surface of leather or leather parts by the use of electronic measuring machines.
It applies to the measurement of leather (or leather parts) fulfilling the following requirements:
-      flexible leather, finished or unfinished, dry or wet leather;
-      flexibility: such to allow full distension on the measuring line/surface.

This document gives guidelines for the test methods and recommended values for upholstery leather for furniture. This document also specifies the sampling and conditioning procedures of specimens.

This document gives guidelines for the test methods and recommended values for upholstery leather for automotive. This document also specifies the sampling and conditioning procedures of specimens.