NDT Products LTD
Sherwin DP-51 Visible Penetrant
DP-51 is a water-washable visible penetrant designed to detect surface flaws such as cracks, laps, pores, and lack of bonding on nonporous parts. Suitable for use on ferrous and nonferrous metals, ceramics, glass, and some plastics, DP-51 is ideal for weld inspections and is commonly known as the visible dye penetrant or color contrast method of inspection.