Abstract: A system is provided for identifying the presence of a target molecule or ion. The system comprises a solid support, and at least one chemical reagent applied to the solid support. Each chemical reagent produces a presumptive color indication that identifies or excludes the presence of a target molecule or ion.

Abstract: Provided herein is a portable test device, mass manufacture method and method of use for identification of at least one target drug of abuse. The portable detection kit can include a catalytic reagent, a solid support carrier, and an absorbent material. The colorimetric reagent and the catalytic reagent can be are affixed to the solid support carrier to form a reaction zone thereon. The colorimetric reagent and the catalytic reagent are configured to undergo chemical reaction with at least one target drug of abuse to produce a visible color change. The at least one target drug of abuse is selected from the group consisting of nicotine, cannabinoids, amphetamines, opioids, or cocaine. A target drug of abuse can be on vaping device surfaces and/or within vaping liquid formulations.