The test represents very severe exposure to ultra-violet light and provides therefore a very rapid determination of light-fastness. Care must be taken in comparing the results of this test with the results of exposure to sunlight. The surface temperature generated by the light source can reach up to 90 鳦, and this light source is not, therefore, suitable for testing of heat-sensitive anodic oxide coatings.
ISO 6581:1980 history
2018ISO 6581:2018 Anodizing of aluminium and its alloys - Determination of the comparative fastness to ultraviolet light and heat of coloured anodic oxidation coatings
2010ISO 6581:2010 Anodizing of aluminium and its alloys - Determination of the comparative fastness to ultraviolet light and heat of coloured anodic oxidation coatings
1980ISO 6581:1980 Anodizing of aluminium and its alloys; Determination of the fastness to ultra-violet light of coloured anodic oxide coatings