This International Standard specifies an accelerated test method for assessing the fastness, using artificial light, of coloured anodic oxide coatings on aluminium and its alloys.
For evaluating light fastness on exterior exposure, only outdoor exposure under conditions comparable to actual service is com-pletely satisfactory.
Accelerated testing is suitable as a quality control test of coloured anodic oxide coatings whose light fastness number has already been established by means of outdoor exposure testing.