Historical
BS EN ISO 3452-3:1999
Non-destructive testing. Penetrant testing. Reference test blocks (British Standard)
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.
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British Standards Institution [bsi]