Dye Penetration Testing

“So called PT (Penetrant Testing) or LPT (Liquid Penetrant Testing), this method can be applied to the surface flaw inspection of almost every materials and products irrespective of their stuff. When the “”penetrant””, vivid colored or fluorescent, is applied to the surface to be inspected, it penetrates into the surface breaking flaw and the flaw is filled with the penetrant. Then filled penetrant will be taken up from the flaw by the “”developer”” applied and will spread around the flaw on the surface.
Inspector easily finds the flaw observing the taken up penetrant on the surface.”