How is primer residue tested for in CSI?

How is primer residue tested for in CSI?

Richard Saferstein (Former Chief Forensic Scientist) gives expert video advice on: How does the study of firearms help in CSI?; How does a gun work?; How are firearms and ammunition collected in CSI? and more...

The major ingredients of primer residue are barium, anemone, and lead. Forensic scientists use sophisticated instrumentation to determine the elemental composition of materials that may contain barium, anemone and lead.