Physical Evidence
Trace evidence comprises a significant proportion of crime scene evidence and can be analysed by our scientists to offer information regarding chemical composition and potentially, the source or origin.The TSW Analytical team has developed a number of unique methods for the chemical profiling of trace evidence that has been recovered from scenes of crime and persons of interest.
What sort of evidence can the TSW Team help with?
Glass: making it possible to link micro-samples of glass found at scenes of crime with those on persons of interest.
Micro-evidence: chemical profiling of physical evidence samples as small as 20 micrometers.
Paints and Plastics: profiling of paints and pigments to identify their manufacturing source or geological origin. This has application in both forensic investigations and investigations into the authentication of artworks.
Other Physical Evidence: the team has developed protocols and always undertaking research into a large number of matrices including;
- Gun Shot Residue (GSR)
- Bullet lead
- Fibres
- Paper
- Wood and other plant materials
- Ink and pencil lead
- Coatings
- Metals
- Precious metals
- Engine oil
- Explosives
- Drugs and much more.