Color Fastness to Light: Analysis of 5 Testing Methods in ISO 105-B02
ISO 105-B02 is a testing method for determining color fastness to artificial light, which uses Xenon arc lamp as light sources to simulate the exposure of fabrics to sunlight. It not only provides five testing methods but also includes five appendices, which are quite complex in content. Therefore, operators often encounter many problems in actual applications. Test Principle of color fastness to light A specimen of the textile to be tested is exposed to artificial light under controlled conditions, together with a set of reference materials. The color fastness is assessed by comparing the change in color of the test specimen with that of the reference materials used. Reference Materials and Apparatus Reference Materials ISO 105-B02 mentioned two sets of blue wool reference totally, of which the blue wool reference 1~8 is preferred in Europe and the blue wool reference L2~L9 in America. It is noteworthy that the results from these two sets of references are not interchangeable. Apparat...