Using vision is the easiest and simplest way to inspect the defective area. The solution is suitable for penetration to seep into the cracks and crevices. Red Penetrant and White Developer were put into set of spray can for convenient of use.
Dye Penetrant Crack Checking System has been widely accepted as one of the best and the simplest non-destructive testing method for the inspection of crack on the surface of non-porous material.