Ranking
1
2
3
4
5
6
7
8
9
10 Developer Form
Nonaqueous Wet Solvent
Plastic Film
water-soluble
Water Suspendible
water-soluble
Water Suspendible
Dry
Dry
Dry
Dry Method of Application
Spray
Spray
Spray
Spray
Immersion
Immersion
Dust Cloud (Electrostatic)
Fluidized Bed
Dust Cloud (Air Agitation)
Immersion (Dip)
The following TABLE lists the main advantages and disadvantages of the various developer types.
Developer Advantages Disadvantages
Dry Indications tend to remain brighter and more distinct over time
Easily to apply Does not form contrast background so cannot be used with visible systems
Difficult to assure entire part surface has been coated
Soluble Ease of coating entire part
White coating for good contrast can be produced which work well for both visible and fluorescent systems Coating is translucent and provides poor contrast (not recommended for visual systems)
Indications for water washable systems are dim and blurred
Suspendible Ease of coating entire part
Indications are bright and sharp
White coating for good contrast can be produced which work well for both visible and fluorescent systems Indications weaken and become diffused after time
Nonaqueous Very portable
Easy to apply to readily accessible surfaces
White coating for good contrast can be produced which work well for both visible and fluorescent systems
Indications show-up rapidly and are well defined
Provides highest sensitivity Difficult to apply evenly to all surfaces
More difficult to clean part after inspection
Process Control of Temperature