Due to the coronacrisis, people are frequently using alcohol-based hand sanitizers to disinfect their hands. This new habit will probably become part of our general hygienic behaviour.

But what is the effect of these disinfectants on the colour of your textiles? 

To measure the colour fastness of your textiles to hand sanitizers, Centexbel has developed a new test method.

Standards and test methods

The newly developed test method is based on the following International standard:

  • ISO 105-X12:2016 - Textiles — Tests for colour fastness — Part X12: Colour fastness to rubbing

A sample of the textile material is brought into contact with an alcohol-based gel for a certain period of time. 

The alcohol-holding gel follows the recipe of the World Health Organization (WHO), in which the gel is composed of 80% alcohol and small fractions of hydrogen peroxide and glycerol.

  • The change in colour of the specimen and the staining of the adjacent fabrics is assessed by comparison with the grey scales
  • ISO 105-X12:2016 - The staining of the cotton rubbing cloths is assessed with the grey scale for staining under suitable illumination.

Test results

The treated samples are compared to a greyscale and graded from 1 to 5 by which 5 = no discoloration.