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Forensic glass analysis

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Glass analysis in case work


Practical crime scene:

  • burglarly, rape pane glass
  • broken glass bottles in assault
  • glass fragments can remain on clothing
  • lens fragments from motor vehicle accidents, hit and run


Collection of glass evidence

BAxter:

  • whole item (like swater with shards)
  • whole glass fragments
  • trace evidence lifter, forensic vacuum, tweezers
  • pharmacist fold, envelope


Practical:

  • for pane glass breakage, hair combed and caught on examination pper, remove clothes on paper and save, sealed, pharmacist fold
  • mark location where it was recovedd



Analysis of glass evidence for comparison: density, refractive index, elemental analysis


Practical:

  • mechanical fit


Glass fractures: direction of force, sequence of force




References