Collecting trace evidence involves careful handling to preserve its integrity for forensic analysis.
When trace evidence is located, the primary methods for collection are often manual and precise.
Key Collection Methods
According to standard practices, trace evidence is collected using one of two main techniques:
- By hand: For larger or more stable pieces of trace evidence.
- With a pair of forceps: This is commonly used for smaller, delicate, or individual items that require precise manipulation to avoid damage or contamination.
Packaging Trace Evidence
Once collected, the evidence must be properly packaged to prevent loss or contamination.
- The collected evidence is placed into an appropriately sized packaging.
- A common example of suitable packaging is a paper bindle. This type of packaging helps contain small items and prevents static electricity buildup that can affect certain types of trace evidence like fibers.
Documenting the Scene
Before collection, especially if the location is crucial to the case, documentation is essential.
- If the location of the trace evidence is significant, its position should be recorded.
- This recording is done by means of a photograph before the item is recovered. This step helps investigators understand the original context of the evidence.
Proper collection and packaging are critical steps in the forensic process, ensuring that trace evidence can provide valuable insights during an investigation.
