RA50 Lightfastness and Weathering Test Methods

Scope: To develop test methods for determining or predicting resistance of textile materials to degradation when exposed to light and moisture alone, in combination with elevated temperatures, and/or other environments are intended to reproduce the degradation effects of outdoor weathering exposure and/or indoor lightfastness. Degradation modes include loss of appearance properties, such as lightfastness, and/or physical properties, such as tensile strength. TMs 16.1, 16.2, 16.3, 111, 125, 126, 139, 169, 177, 181, 186 and 192.