DP-50 is a red colored, water-wash dye penetrant liquid used to locate cracks, laps, pores, lack of bonding, and similar surface flaws in any insoluble, nonporous substance including both ferrous and nonferrous metals, ceramics, glass and many plastics. Referred to as the “visible dye penetrant” method or “color contrast” method of inspection.
Penetrant System Category
Visible – Type 2 Water-wash (Methods A&C)
QPL SAE AMS 2644 Method Method C, Method A
ASTM E1417, E165