The Cocaine Purity EZ Test Kit is designed to help identify whether a powder is cocaine and give an indication of its purity. Unlike a standard presence test, this kit is intended to provide an indicative analysis of cocaine purity, helping users gain a better understanding of the quality of the sample being tested. It is specially formulated not only to detect cocaine, but also to exclude certain similar substances commonly used as cuts or substitutes.

A key feature of the kit is its ability to reduce false purity results caused by substances such as Mannitol, Lidocaine, Benzocaine, and Procaine. These are often added to cocaine to increase bulk or mimic some of its effects, particularly the numbing sensation associated with cocaine. By excluding these compounds from the purity reading, the kit is designed to give a more reliable indication of cocaine purity than a simple reaction test alone.

The test works by producing a colour change when cocaine is detected in the sample, with the extent of that colour change varying according to how much cocaine is present. The result is then compared against the included chart to indicate both the presence of cocaine and its purity level. It should be noted that while the kit gives an indication of purity, it does not identify what other substances may be present in the sample.