ISO 3059:1974

Non-destructive testing — Method for indirect assessment of black light sources

Specifies a procedure for assessing the output of black light lamps used in fluorescent magnetic particle and penetrant flaw detection techniques. Applies to both new lamps and lamps in service. May also be used for checking that specified levels of black light illumination are achieved and maintained. A control test for checking the fluorescence of penetrant liqids is specified in Annex A.