What is EN ISO 105X19:2018?

EN ISO 105X19:2018 is an international standard that provides guidelines and procedures for the determination of color fastness to light of textiles. This standard was developed by the International Organization for Standardization (ISO) in collaboration with the European Committee for Standardization (CEN). It is widely used in the textile industry to assess the durability of colors on various materials, such as fabrics, yarns, and threads.

The Importance of Color Fastness Testing

Color fastness testing plays a crucial role in ensuring the quality and longevity of textile products. The colorfastness of a material refers to its ability to resist fading or change in color when exposed to external factors, such as light, washing, or rubbing. Textile manufacturers and retailers rely on color fastness tests to determine if their products meet the desired level of durability under different usage conditions.

EN ISO 105X19:2018 specifically focuses on color fastness to light, which is essential because textiles are often exposed to sunlight or artificial light sources. Without proper colorfastness, textiles may fade or change in color over time, significantly impacting their aesthetic appeal and market value.

The Testing Procedure

The standard outlines a precise testing procedure to evaluate color fastness to light using a xenon arc lamp as the light source. The test involves exposing a sample of the textile to controlled levels of irradiance and humidity for a specified period. Depending on the intended usage and end application, different test methods, such as Method A, Method B, or Method C, can be employed.

The test specimens are assessed visually before and after exposure to determine any changes in color. The degree of color change is evaluated using either a grey scale or a blue scale, depending on the expected color change of the material. The results are then compared to a set of defined performance levels to determine if the material meets the specified requirements.

Suitability for Different Materials

EN ISO 105X19:2018 is applicable to a wide range of textile materials, including but not limited to fabrics made from natural fibers, synthetic fibers, blend fibers, and knitted or woven fabrics. It is also suitable for assessing the colorfastness of other textile products, such as threads, cords, and ropes. By providing a standardized testing method, this standard ensures consistent and comparable results across different types of materials, allowing manufacturers to make informed decisions about their product quality and durability.