The GSCAN, a state-of-the-art, handheld, portable Raman Spectroscopy detector, provides law enforcement, military, and security agencies with a powerful, sensitive, and accurate tool for detecting a wide variety of explosives, their precursors, and narcotics in all forms: liquids, powders, and bulks. Based on an embedded materials library of hazardous substances, the GSCAN is easily operated and delivers definitive results in as little as 9