Advantages
- has high sensitive to small surface discontinuities.
- has few material limitations, i.e. metallic and nonmetallic, magnetic and nonmagnetic, conductive and nonconductive materials may be inspected
- Large areas and large volumes of parts/materials can be inspected rapidly and at low cost.
- Parts with complex geometric shapes are routinely inspected.
- Indications are produced directly on the surface of the part and constitute a visual representation of the flaw
- Aerosol spray cans make penetrant materials very portable
- Penetrant materials and associated equipment are relatively inexpensive.