1
Q
Method A
A
Water Washable
Emulsifier is built in
Fastest and easiest
Best for rough/ porous materials
2
Q
Method B
A
Post Emulsifier- lipophilic
Lipo means oil-based
Dwell critical to emulsifier concentration
Proper dwell time usually between 30 seconds to 3 minutes
3
Q
Method C
A
Solvent removable
All solvents are in a portable kit
Can be used with a water washable penetrant
4
Q
Method D
A
Post emulsifier- hydrophilic
Most sensitive & effective technique
Liquid penetrant testing
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