This European standard describes two types of reference blocks:
- Type 1 reference blocks are used to determine the sensitivity levels of both fluorescent and colour contrast penetrant product families;
- Type 2 reference blocks are used for routine assessment of the performance of both fluorescent and colour contrast penetrant facilities and part-used containers.
The reference blocks are used in the same conditions as the pieces to be tested according to EN 571-1.
BS EN ISO 3452-3:1999 history
2013BS EN ISO 3452-3:2013 Non-destructive testing. Penetrant testing. Reference test blocks
1999BS EN ISO 3452-3:1999 Non-destructive testing - Penetrant testing - Reference test blocks