Step 4 in Penetration Testing

Penetrant Process : A Developer is applied to bring entrapped penetrant back to the surface by reverse capillary action blotting.
1. A developer, form a uniform coating of fine white powder to create contrast surface for the indication.
2. Developer surface is used for blotting the penetrant out of the discontinuities.
3. Penetrant bleeds and spreads into developer and the indication become easily detectable. The indication may enlarge with time.

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