Chemical analysis of materials like petroleum products, cement, explosives, and post-explosion residues, oils, and fats, dyes, dangerous drugs like heroin, brown sugar/guard, cocaine, methaqualone, LSD, narcotics such as opium, cannabis: charas, ganja, bhang, industrial chemicals, and residues thereof in cases of murder, arson, explosion, theft, cheating, etc. is carried out in this division. In the consumption of narcotic drugs, blood, and urine samples of the accused are referred for analysis. Analysis of the above mentioned evidential materials is carried out by using the most ultra-modern instruments such as High-Performance Liquid Chromatography, Gas-Liquid Chromatography, Ultra-violet / Infra-red Spectrophotometers, AtomicAbsorption Spectrophotometer, High-Performance Thin Layer Chromatography Scanner (HPTLC Scanner), Gas Chromatography – mass spectrometer (GC-MS), Ion-chromatograph, Gas Chromatography -Ion Scan, Gas Chromatography-Automated Thermal Desorption(GC-ATD), GasChromatography– Detailed Hydrocarbon Analyzer (GC-DHA), Gas Chromatography - Head Space (GC-HS), Elemental Analyzer and much other automated equipment’s to determine the flash point, viscosity, and distillation range, which are mostly used for the analysis of petroleum products.