Collect and Preservation of Evidence

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Collection and Preservation
Cheryl Alt
Unit 2 Individual Project

Physical evidence is what is collected after a crime has been committed. This evidence may be introduced into a trial. This would be the evidence that is collected that is from a non-living origin. There are many types of physical evidence that the investigators collect. This type of evidence can conceivably include all or part of any object.

The evidence that is found at the scene of a crime is considered evidence. One type of evidence that is found is physical evidence. This type can consist of fingerprints, footprints, handprints, tidemarks, cut marks, and tool marks. The Physical evidence is collected by the investigators and packaged and preserved by them as well. A few of the physical evidence that will be reviewed are; trace evidence, fingerprints, and footwear impression and tool marks.

The physical evidence known as trace evidence can be gunshot residue, paint residue, chemicals glass, and illicit drugs. When an investigator is gathering this evidence they may use tweezers, plastic containers that have lids, a knife, and a filtered vacuum device. With certain physical evidence they will need to use a biohazard kit. This kit will include disposable gloves, booties, face mask, a gown, and a biohazard waste bag.

If there was a gun used the investigators will need to collect the clothing of the victim and all others that may have been on the scene of the crime. This way the lab can check for gunshot residue. There could be gunshot residue on the victim which can indicate that it was a close shot. If there is gunshot residue on any of the others then it could lead to a suspect. The investigator will collect the clothing and put it all in sealed paper bags for the transportation.

If the investigators find illicit drugs or an unknown powder they will use a knife and then they will seal...
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