Liquid Penetrant Inspection
Materials
Penetrant Classification System
| Penetrants |
Type I |
Fluorescent |
|
Type II |
Visible (Red) |
| Fluorescent Sensitivity |
Level 1/2 |
Ultra Low |
|
Level 1 |
Low |
|
Level 2 |
Medium |
|
Level 3 |
High |
|
Level 4 |
Ultra High |
| Removers |
Class 1 |
Halogenated (nonflammable) |
|
Class 2 |
Nonhalogenated (flammable) |
| Removal Method |
Method A |
Water Washable |
|
Method B |
Lipophilic Emulsifier (oil based) |
|
Method C |
Solvent Wipe |
|
Method D |
Hydrophilic Emulsifier (water based) |
| Developers |
Form A |
Dry Powder |
|
Form B |
Water Soluble |
|
Form C |
Water Suspendable |
|
Form D |
Nonaqueous Type 1 Fluorescent, Solvent Based |
|
Form E |
Nonaqueous Type 2 Visible, Solvent Based |
