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.
ISO 3452-3:1998 history
2013ISO 3452-3:2013 Non-destructive testing.Penetrant testing.Part 3: Reference test blocks
2001ISO 3452-3:1998/Cor 1:2001 Non-destructive testing - Penetrant testing Part 3: Reference test blocks; Technical Corrigendum 1
1998ISO 3452-3:1998 Non-destructive testing - Penetrant examination - Part 3: Reference parts (Second edition)