NF A09-599:1988 Non destructive testing. Surface control methods (penetrant testing, magnetic particle testing.). Characterization of ultraviolet light sources.
2001NF A09-599:2001 Non-destructive testing - Penetrant testing and magnetic particle testing - Viewing conditions.
1988NF A09-599:1988 Non destructive testing. Surface control methods (penetrant testing, magnetic particle testing.). Characterization of ultraviolet light sources.