A non-destructive test kit to quickly locate cracks and defects in metals, glass, and plastic. This kit contains no chlorine or sulfur-bearing solvents. Developed for testing materials where halogenated safety solvents are not permitted Conforms to MIL-I-2135 Meets RDT F-3-6T standard as established by the Atomic Energy Commission, NAVSHIPS 250-1500 and MIL-STD 271 Kit includes 4 cans #1071 Cleaner, 2 cans #1072 Penetrant, and 2 cans #1073 Developer 5 easy steps: apply Cleaner, apply Penetrant, wipe, apply Developer, inspect Applications: metal, plastic, and glass. Ideal for welding, automotive manufacturing, and repair, oil drilling, foundries, etc.