Handbook of Forensic Services (pdf) - FBI

Handbook of Forens c Serv ces 2007
Polymer Examinations
Polymer ev dence typ cally cons sts of p eces of
plast c or other manufactured mater als. The
source, use, or manufacturer of polymer ev dence
usually cannot be identified by compositional
analys s.
Motor veh cle tr m can be compared w th plast c
rema n ng on property struck n a h t-and-run case.
The manufacturer, make, model, and model year
of a veh cle can be determ ned f a manufacturer’s
part number s on the tr m.
Plast cs n w re nsulat on and m scellaneous
plast cs such as buttons can be compared w th
known sources.
Questions concerning polymer evidence
should be directed to 703-632-8441. Follow the
ev dence subm ss on d rect ons, nclud ng
Requesting Evidence Examinations and
Packaging and Shipping Evidence.
ß
When a motor veh cle has been n an
acc dent, fragments (e.g., plast c lens covers)
can be left at the scene. These p eces can be
phys cally reconstructed w th the remnants of
the fixture left on the car. Collect and package
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