What was posted above seems correct.
MDA/MDMA and MDMA/PMA can NOT be distinguished.
(It would be better to say that you can not distinguish between primary amines with Robadope if there is also MDMA present)
"distinguish between MDMA/MDA and MDMA/PMA combos with Mandelin"
I would be very careful with this.
I would like to stress that I do not like the E2 colorchart. This kind of chart was withdrawn by us a long time ago just because certain colorchanges are just too similar !
http://eztest.com/index.php?product=marquis&topic=faq#faq70
EZ Test X-TREME should be interpreted as follows; if you do NOT observe a typical (sequence of) reactions, you should conclude that your pill does not contain an Ecstasy like substance (or that your pill may contain some Ecstasy like substance but it seems there is also another drug present).
Try finding out what it is and you'll get stuck in assumptions and bad conclusions.
A non-typical reaction can indicate all sorts of substances, including materials that are used in the production process and that labs never test for.
Also, DXM/MDMA combo's are impossible to detect, we tried it with Mecke and were hoping for a flash of yellow (indicating DXM) but the MDMA reaction clearly masks the DXM reaction.
(We had some 'certified' DXM and 'MDMA' from a laboratory to try things out).
aj