How the Crime Scene Officers Protect the Evidence

Scene of Crime Officer- They have a responsibility to protect the crime scene from the evidence being ruined in any way.
Their role is to follow correct procedures to collect the evidence- they have to document it by using a camera to take photos of the evidence before they can collect it. Samples are bagged in protective packaging, Evidence that have to be casted such as tire tracks and footprints is done under the same procedure- photographed and then make casings.

Forensic Pathologist- They have a responsibility to perform an autopsy and determine a cause of death.
Their role is to identify the victim and then find out the time of death of the victim and should be done sooner rather than later to get a more accurate result. An autopsy is then carried out to determine cause of death.

Criminal Profiler- Their responsibility is to produce a profile to assist the police in the criminal investigation.
Their roles is investigate a crime scene, and study reports made by the experts in the case and interviewing witnesses. They then have to work on a psychological profile based on the evidence they have gathered.
They have to write reports on their findings and may have to give testimony in a court.

Forensic Scientist- Their responsibility is to analyse the samples taken from the crime scene back at the lab, applying the proper techniques
Their roles depends on which area that they work in, chemistry, biology and toxicology-drugs.
Those in chemistry; examine chemicals found, paint,
Those in biology; DNA testing, contract traces.
Those in toxicology-drugs; drugs, poison detection, examining blood and urine samples.
They have to record their analysing in computers, written reports and oral. Some will have to appear in co...

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...ogist.
To avoid contamination of evidence everything must be hygienic in the morgue room.
The samples that are taken from the autopsy have to be placed in a container that is contamination proof. Majors that have to be weighed should be placed in refrigerated storage.

Storage and preservation in the lab is the responsibility of the forensic scientists.
The samples that are analysed in the lab have to be stored in the appropriate storage. Fluids and DNA must be placed in a storage that is refrigerated or frozen. Reactive chemicals that have been analyzed must be placed in airtight storage that is packed away from air vents and conditioning. Disks have to be protected against damaging.
The evidence samples have to be protected against contamination, such as heat, water, vibration, magnetic fields. Anything that could cause a risk to contaminating the evidence.