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 |
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