Narcotics identification system Box of 10 Marquis Reagent: Primary general screening test for the presumptive identification of Opiates (Morphine, Codeine or Heroin), Demerol, Black Tar, Amphetamine-type compounds including Methamphetamine & Methylenedioxymethamphetamine (MDMA or Ecstacy), Amphetamines and as a general screening agent for other drugs. Specifications Brand: NIK Manufacturer part #: 1006149 Category: Forensics & CSI › Narcotics Shipping weight: 0.23 lb Country of origin: US Ships fast from GunCycle — free economy shipping on orders $99.99+.