# Colour quantitation for chemical spot tests for a controlled substances presumptive test database

> Research article (Drug Testing and Analysis, 2016) · cited 34× · AI/ML

**Wikidata**: [openalex:W2279696111](https://www.wikidata.org/wiki/openalex:W2279696111)  
**Source**: https://4ort.xyz/entity/colour-quantitation-for-chemical-spot-tests-for-a-controlled-substances-presumptive-test-database