Module 1 Lesson 3
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The reason latent fingerprints need to be enhanced is they….
Are not visible to the human eye
The type of lifting powder used by a forensic expert is often dependent upon…
Personal preference
A precaution that must be taken when lifting powder is being used is…
Use protective goggles and face mask
What is used to lift a fingerprint after lifting powder has been applied?
Tape
What type of lifting powder brush attracts loose lifting powder?
Magnetic
The iodine used in iodine fumigation process is a…
Non-metal and produces positively-charged ions
Iodine is attracted to which ion in the sweaty residue that forms a fingerprint?
Sodium
What color is the sodium iodine that forms during iodine fumigation?
Dark brown/black
What is chemical reaction that occurs when iodine is exposed to sweat in a fingerprint?
Single replacement
Why should the enhanced fingerprints from iodine fumigation be exposed to a fixing solution after the process is completed?
Fingerprints will decompose in time
Cyanoacrylates found in a commercial product know as…
Krazy glue
What substance found in a fingerprint will cyanoacrylate readily adhere to?
Body oil
During fumigation process, what must be present in the fumigation chamber in addition to cyanoacrylate?
Heat and moisture
What color does the cyanoacrylate leave upon a fingerprint impression during fumigation?
Whitish grey
An advantage is that fingerprints exposed during cyanoacrylate fumigation is?
Permanent