Purpose of Test This test evaluates the ultraviolet radiation (UV-R) blocked by textile fabrics treated with UV protection. This test simulates the UV-R on various fabrics to make sure they are properly rated for UV protection. It provides a general procedure for determining UV protection property in textiles in these conditions: Wet Dry Terminology Defined… Continue reading AATCC 183 Transmittance or Blocking of UV Radiation through Fabric