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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