SIRCHIE Fingerprint Laboratories, Inc. introduces the NARK II Progressive System for Drug Identification. NARK II has the capability of presumptively identifying several families of substances suspected of being abused drugs. Designed to function as a transportable narcotics laboratory, it is available for use wherever the need for its capability might arise. Each of the tests is comprised of one or more chemical reagents. When a predictable color or series of colors occur within a specific testing sequence, a positive confirmation may be presumed. Presumptive identification is generally recognized within our legal system as a component of probable cause. There is no drug identification system presently in use which completely eliminates the occurrence of false positives and false negatives. A forensic laboratory is required to qualitatively identify an unknown substance.