The NDT inspection method with penetrat liquids is

undoubtedly the cheapest, applicable to the most disparate materials (ceramics, plastics, etc.) as well as to alloys of ferrous or non-ferrous materials.
Below is the link to the new video in our KARL DEUTSCH channel entitled KD-CHECK: Dye Penetrant Testing on Welds

YouTube:
https://lnkd.in/dwgfXRw