1. Lab: Forensic Analysis of Fibers
Microscopic Observations
Burn Test

2. Burn Test Fiber Microscopic Observation Behavior Nearing Flame
Behavior In Flame
Behavior Removed From Flame
Odor
Ash or Residue
Acrylic
Cotton
Nylon
Polyester
Rayon
Silk
Wool
Unknown

3. Microscopic Observations

4. Burn Test Do the fibers melt and/or burn?
Do the fibers shrink from the flame?
What type of odor do the fumes have?
What is the characteristic of any smoke?
What does the residue of the burned fibers look like?

5. Conclusion
Based on your microscopic observations and the results of the burn tests, what is the unknown fabric?
Which observations do you think are the most helpful in determining the fabric identity?
What are the differences between the natural and synthetic fibers?