Glass fragments recovered from a suspect and compared by physical and chemical tests to the glass from the crime scene.
Minute fragments of paint, plastic or other building materials may be recovered from the clothing or tools of a suspect. The layer sequence of fragments of recovered paint can be determined by microscopy and compared to that of the control paint from the scene. In addition, the physical and chemical properties of the paint or other particulates can be measured and compared to the control materials from the scene.