Does anyone know what a quick flash of orange, and then to blue would mean when doing a marquis or mecke test? I remember my first time doing it I swear as soon as I put a drop on the shavings I saw a quick flash of orange. I can't remember if it was the marquis or mecke though. I did try repeating but couldn't get it to flash orange again. This was my first time so I didn't think to much about it, I was just happy that it had turned blue. If I remember correctly this pill did give me a bad headache the next day.
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RT&DC Moderators: Senior Staff
Flash of orange during Mecke or Marquis Test?
- Thread starter devorzon
- Start date
foxyloxy55
Bluelighter
What do you mean by a flash of orange? Are you referring to the color of the reagent or did it actually react and change to orange and then fade to blue? I haven't heard of that before.
phase_dancer
Bluelight Crew
It could certainly be from amphetamine/meth, particularly if the tablet wasn't homogeneous. However, there are many other things that could have produced that reaction. Aside from tablet formulation ingredients; excipients, binders, dyes etc., many drugs also form an orange reaction product with Marquis. From Spot tests: A Color Chart Reference for Forensic Chemists, by Johns et al of the 200+ compounds tested, 21 gave an orange product with Marquis, and a further 37 produced a brown or orange-brown product.
severely etarded
Bluelight Crew
^^ This man's words are my bible, listen to everything phase_dancer says about chemistry/testing 