CRC Weld Check cleaner and penetrant remover is a quick drying solvent cleaner/degreaser and excess penetrant remover for the nondestructive testing of metal surfaces by liquid penetrant inspection. Many cracks in engineering materials can be deep in spite of having a very small opening width on the surface and can cause very serious defects. By normal visual inspection such cracks may be very difficult to detect, but penetrant flaw detection is an extension of the visual inspection method. Part 1 of CRC's 3-part Weld Check system, this system is used for the non-destructive testing of metal surfaces by liquid penetration method. CRC Weld Check cleaner and penetrant remover is a non-chlorinated, fast drying, powerful degreasing solvent for the removal of dirt, grime and contaminants. It is designed for the pre-treatment of the surface, prior to liquid penetrant inspection and to remove all visible, colored traces of the penetrant. Non-destructive inspection of materials, parts, assemblies, equipment, surfaces or structures. Detects the following: cracks, lack of fusion and open cavities in welded parts; cracks and cavities caused by metal fatigue and cutting operations; porosity or leaks in pipes, tanks, boilers, heat exchangers; discontinuities, laps, folds and cracks in castings, forgings and ceramics.