| Abstract: | The purple reference fabric (LRF-1) proposed by the AA TCC for the calibration of fading lamps together with the ISO Blue Wool Light–fastness Standards 1–5 and the AA TCC Blue Wool Light–fastness Standards L2–L5 were exposed in the Xenotest 150 under different effective humidity conditions, as well as in daylight. It is concluded that, for use in calibrating fading lamps, the LRF–1 fabric shows no advantages over the Blue Wool Standards. On the contrary, its very high heat–sensitivity is a serious defect. As a light–fastness standard it is use/ess, in view of its low fastness to light. |
