For evaluating light fastness on exterior exposure, only outdoor exposure under conditions comparable to actual service is completely satisfactory. The 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.
ISO 2135:1984 history
2017ISO 2135:2017 Anodizing of aluminium and its alloys - Accelerated test of light fastness of coloured anodic oxidation coatings using artificial light
2010ISO 2135:2010 Anodizing of aluminium and its alloys - Accelerated test of light fastness of coloured anodic oxidation coatings using artificial light
1984ISO 2135:1984 Anodizing of aluminium and its alloys; Accelerated test of light fastness of coloured anodic oxide coatings using artificial light
1976ISO 2135:1976 Anodizing of aluminium and its alloys — Accelerated test of lightfastness of coloured anodic oxide coatings