1.目的和范围1。1本试验方法提供了测定纺织材料耐候性的方法。1.2下述测试选项适用于纤维、纱线、织物及其制品，包括涂层织物，无论是天然的、有色的、成品的还是未成品的。包括的测试选项有:A-阳光-弧光灯照射和湿润B-阳光-弧光灯照射和湿润2。原则2。1在规定的相对湿度或湿润条件下，将试样和商定的比较标准同时暴露在光源下。

1. Purpose and Scope1.1 This test methods provides a means for determining the weather resistance of textile materials.1.2 The test options described below are applicable to fibers, yarns and fabrics and products made therefrom, including coated fabrics, whether natural, colored, finished or unfinished. Test options included are:A-Sunshine-Arc Lamp Exposure with WettingB-Sunshine-Arc Lamp Exposure without Wetting2. Principle2.1 Test specimens and agreed upon comparison standard(s) are exposed simultaneously to light source under specified conditions of either relative humidity or wetting.