Transcript Fiber Examination

Fiber
Examination
What can be learned from fibers?
• Source- natural or
synthetic, clothing,
carpeting, or other
source
• More testing can reveal
dye formulas and lead
to the manufacturer.
Shirt Fabric
Knit Shirt
Carpet Fibers
The tube
used to
create
carpet and
synthetic
fibers give
them their
shape.
A highly
magnified
view of fabric
fibers.
Examples of Trace Evidence from Carpets:
• Dirt
• Hairs
• Plant debris
• Human or animal tissue
• Metal shavings
• Glass
Collecting The Trace Evidence
A hand held
vacuum with a
sterile filter is
used to
carefully collect
any tiny
evidence from
carpeted areas.
Analysis of Trace Evidence
Investigators
closely examine
any materials
collected using a
stereomicroscope.
THE END