It is a non-contact and non-destructive and does not require any sample preparation for raman spectrometer. However, further investigations of the same specimen to confirm results can preserve small traces of evidence.Additionally, the the high spatial tesolution of confocal system enables performing a complete analusis withe small sample volume.In the field of Forensic Science, they make the technique as an efficient and robust analytical method.
The analyst often needs to analyze mixtures of drug particles and cutting agents. Manitol, myoinositol and sorbitol have been analyzed as possible cutting agents and their Raman spectrometer are depicted in Figure 3. The results clearly show that the spectra of cutting agents differ from each other as well as from the reported spectra of drugs.