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Developers (Developer forms (Nonaqueous (Ranking (Ranking: 1 (Spray)),…
Developers
Developer forms
Water Suspendable
ease of coating entire part
white coating for good contrast can be produced
which work well for visible and fluorescent systems
Ranking
Ranking: 4 (Spray)
Ranking: 6 (Immersion)
indications are bright
and sharp
Nonaqueous
very potable
white coating for good contrast can be produced which
work well for visible and fluorescent systems
easy to apply to readily accessible
surfaces
indications showup rapidly and are well-defined
provides the highest sensitivity
Ranking
Ranking: 1 (Spray)
Water Soluble
ease of coating entire part
white coating for good
contrast can be produced
Ranking
Ranking: 3 (Spray)
Ranking: 5 (Immersion)
Special Applications
Plastic or lacquer developers are special developers
Ranking
Ranking: 2 (Spray)
Dry Powder
indicarions tend to remain brighter and more distinct
over time
easily to apply
Ranking
Ranking: 7 (Dust Cloud - Electrostatic)
Ranking: 8 (Fluidized Bed)
Ranking: 9 (Dust Cloud - Air Agitation
Ranking: 10 (Immersion - Dip)
Function
reflect and refract the incident
ultraviolet light allowing more of it to interact with penetrant
create a white background
pull the trapped penetrant material out of defects and
spread it out on the surface
allow more light to emitted