Table 3-2. Penetrant Inspection Materials
FLUORESCENT DYE PENETRANT
VISIBLE DYE PENETRANT
VISIBLE AND FLUORESCENT PENETRANT (DUAL MODE)
WATER WASHABLE (WW)
POST EMULSIFIABLE, LIPOPHILIC
POST EMULSIFIABLE, HYDROPHILIC
SENSITIVITY LEVEL 1.
SENSITIVITY LEVEL 2.
SENSITIVITY LEVEL 3.
SENSITIVITY LEVEL 4
DRY POWDER DEVELOPER
WATER SOLUBLE DEVELOPER
WATER SUSPENDABLE DEVELOPER
NONAQUEOUS (WET) DEVELOPER
SPECIFIC APPLICATION NON-AQUEOUS WET DEVELOPER
HALOGENATED SOLVENT REMOVER
NON-HALOGENATED SOLVENT REMOVER
SPECIFIC APPLICATION SOLVENT REMOVER
Steam cleaning Steam cleaning is a modification of the hot-tank, alkaline-cleaning method which can be
used for preparation of large unwieldy parts
Vapor degreasing. Vapor degreasing is a highly preferred method of cleaning, especially when heavy oils
and grease may fill surface defects Inorganic contamination is generally best removed by the alkaline cleaning process,
but organic soils often respond better to vapor degreasing.
Ultrasonic cleaning. When cracks are filled with some hard contaminate such as oxide, carbon, or engine
varnish, ultrasonic cleaning may be used to break up (or remove) these contaminates in order that the dye penetrant may