This standard PD CEN/TS 17100:2017 Non-destructive testing. Penetrant testing. Reference photographs and sizing of indications is classified in these ICS categories:
19.100 Non-destructive testing
This document specifies minimum requirements in order to obtain and reproduce photographs used as reference records relative to PT (penetrant testing) colour contrast and fluorescent indications. It also provides requirements for the monitoring of resolution when measurements are to be indirectly performed by recording.