What is EN ISO 105-X:2020?

The EN ISO 105-X:2020 is a technical standard that provides guidelines for evaluating color fastness of textiles, particularly in relation to light. It establishes specific methods for testing and assessing the resistance of textile materials to fading when exposed to various light sources.

Understanding the Scope

Within the context of this standard, color fastness refers to the ability of a textile material to retain its original color during its expected use and exposure to different environmental conditions, especially light. The EN ISO 105-X:2020 standard offers comprehensive instructions on performing tests to determine color fastness and grading the results.

Testing Procedures and Parameters

The EN ISO 105-X:2020 standard defines several test methods for evaluating color fastness against light, including artificial weathering and exposure to sunlight. These methods help reveal any potential color changes or fading as a result of light exposure over time. The parameters and conditions for each test are specified in the standard to ensure consistent and comparable results.

One of the major test methods outlined in the standard is the Xenon arc fading lamp test. This procedure involves exposing a textile specimen to controlled artificial light, simulating natural sunlight conditions. The specimen is then evaluated visually and instrumentally to determine the degree of color change, along with other properties such as color strength, staining, and discoloration.

Interpreting Test Results

After conducting the prescribed tests following the EN ISO 105-X:2020 standard, the obtained results need to be interpreted accurately to assess the color fastness of the textile material being tested. The standard provides guidance on how to assign grades based on the observed color changes and fading.

The grading system ranges from 1 to 8, with a higher grade indicating better color fastness. Grade 1 indicates substantial color change or fading, while grade 8 implies no significant color change. The interpretation of intermediate grades depends on the specific requirements or industry standards.

It's important to note that the EN ISO 105-X:2020 standard is regularly updated to incorporate advancements in technology and methodologies, ensuring its reliability and relevance in the textile industry.