Marquis Reagent Colour Chart

The colour chart below is the one which was originally sold with Marquis reagent test kits and it shows the change in colour in Marquis Reagent over a period of 60 seconds when it is added to pure samples of MDMA, MDEA, MDA, MBDB, 2CB and speed.

It is now believed that the test is not subtle enough to distinguish between substances in the MD* family (MDMA, MDEA, MDA and MBDB) under the circumstances in which most people will use the kit.
The colour sequences shown below for speed-like substances and 2-CB still hold, but the manufacturers of the test kit now say that a dark purple reaction can indicate the presence of any of the ecstasy-like substances.

The new colour chart is at: www.ez-test.com