In addition to combing the hair, the individual can remove their clothes on examination paper which can then be sealed and saved for examination at a later time. When it is suspected that an individual has small glass fragments on their person, their hair can be combed and caught on examination paper in an attempt to recover potential glass fragments. It is also important that the location from where the glass was recovered is noted. Small glass fragments or shards can be secured in a pharmacist's fold and in an envelope. In these cases, trace evidence lifters, forensic vacuums or tweezers can aid in the collection of the glass evidence. Glass evidence can also take on the form of trace evidence. When possible, it is preferred that the entire item of evidence, such as a glass fragment or sweater with glass shards, is collected. Collection from crime scenes ĭepending on the form of the evidence, glass analysis can be collected in several ways. Glass analysis is also applicable to motor vehicle crashes, particularly hit and run cases, as glass from headlights can be analyzed. In assaults, broken glass bottles may be found and analyzed in addition to glass fragments that may remain on clothing.
In burglary or rape cases, window pane may be broken and analyzed. Glass analysis is applicable to a wide range of forensic cases. It is also possible to analyze glass fractures to better understand the angle, direction and sequence of force as well as the projectile used. Glass can be analyzed to understand its origin using comparative analysis which may include measurements relating to physical match, refractive index, density and elemental analysis. Glass evidence comes in many forms in various types of criminal cases. Forensic glass analysis is the application and analysis of glass to determine details about a crime.
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