Wetting Action		Fine Free Flowing
Visual Adaptation		Solvent catagory
Visible Light		Test piece with known defects to verify penitrant process
Viscosity		Removing serface material using chemicals
Type		Temp at which vapor ignites
Sensitivity Level		Surface of the material being viewed
Known Defect Standard		Liquids ability to flow over a serface
Fluorescence		Fluorescent or Visual
Flash Point		Water based that makes penitrant "water washable"
Hold out sample		Oil based liquids makes penitrant "water washable"
Form		Developers
Non Aqueous		Developers particles suspended in non water based vehicle
Dry Powder		Time penitrant stayed on serface before removed
Etching		Penitrant seeping to the serface
Lipophilic		Emission of visible radiation during the absorption of black light
Hydrophilic		Difference in brightness or color
Emulsifier		Interacts with oil to make surface "water washable"
Dwell Time		Eye Adjustment
Developer		(320 - 400) Elect Radiation
Contrast		Unused penitrant for comparison testing
Class		How sensitive a penitrant is to finding defects (1/2 - 4)
Bleed Out		Liquids resisting sheer flow
Black Light		400 - 700
Background		Bleed out Accelerant