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University of South Wales
Referral Coursework 2012-2013
1A. The procedures and protocol of the collection, preservation and packaging of all aspects of evidence from various crimes that maybe encountered by a criminalist.
The search for physical evidence at a crime scene must be done thoroughly and followed by the protocol. How the criminalist will decide to execute the crime-scene investigation depends on the size and the locale of the area, as well as on the actions of the suspect(s) and victim(s) at the scene. It must be considered that physical evidence can be anything, from a massive object to a microscopic trace, however, some evidence are clearly visible but others need to be examined in the laboratory in order to be detected. Physical evidence must be processed in a way so as to prevent any change from happening between the time that was collected on the crime scene and the time it is received by the laboratory. When collecting physical evidence from a scene, any criminalist must be aware of the fact that recovery of one type of evidence can destroy another. Once a piece of physical evidence has been recovered it is of vital importance to be properly packaged, labelled and stored as soon as possible after the recovery. Furthermore, in order to avoid cross-contamination or any damage through contact all items must be packaged in separate appropriate containers. All containers must be completely sealed in order to avoid losing a valuable evidential item or for avoiding cross-contamination between the samples. There are several types of physical evidence, for that reason there are different packaging containers. A criminalist in order to be well-prepared must have a large amount of tools and different packaging containers when examining a crime-scene. Small items or trace evidence such as hair, glass and fibres can be packaged at an unbreakable plastic pill bottle with pressure lids or they can be wrapped in pre-folded paper (this is known as
Referral Coursework 2012-2013
1A. The procedures and protocol of the collection, preservation and packaging of all aspects of evidence from various crimes that maybe encountered by a criminalist.
The search for physical evidence at a crime scene must be done thoroughly and followed by the protocol. How the criminalist will decide to execute the crime-scene investigation depends on the size and the locale of the area, as well as on the actions of the suspect(s) and victim(s) at the scene. It must be considered that physical evidence can be anything, from a massive object to a microscopic trace, however, some evidence are clearly visible but others need to be examined in the laboratory in order to be detected. Physical evidence must be processed in a way so as to prevent any change from happening between the time that was collected on the crime scene and the time it is received by the laboratory. When collecting physical evidence from a scene, any criminalist must be aware of the fact that recovery of one type of evidence can destroy another. Once a piece of physical evidence has been recovered it is of vital importance to be properly packaged, labelled and stored as soon as possible after the recovery. Furthermore, in order to avoid cross-contamination or any damage through contact all items must be packaged in separate appropriate containers. All containers must be completely sealed in order to avoid losing a valuable evidential item or for avoiding cross-contamination between the samples. There are several types of physical evidence, for that reason there are different packaging containers. A criminalist in order to be well-prepared must have a large amount of tools and different packaging containers when examining a crime-scene. Small items or trace evidence such as hair, glass and fibres can be packaged at an unbreakable plastic pill bottle with pressure lids or they can be wrapped in pre-folded paper (this is known as