Update 10/4/11:
Added new compounds. Added proper results for 5/6-APB
Update 13/12/10:
Added new compounds. Stitched together the best results, and added column for simons/robadope where the results were meaningful (however, due to the unpleasantness of performing the test, these are theoretical results, as you can see).
Before you begin:
Fizz: Fizz is meaningless when identifying the compound present - it only tells you that the sample was present as the HCl salt (or salt of a similar volitile acid). Hence, fizz is proportional to the amount of Whatever HCl you dumped in. When fizz is useful is if you are testing something, and you see a lot of fizz, but only a slow color change to the expected compound, or when you think you have the base, and it fizzes, you know you don't have the base.
Smell: Know what cathinones (ie, mephedrone) smell like. Buy a sample of the filthy things if you have to. The majority of misrepresented RC's on the market are cathinones being sold as something less shitty. Put your sample into a sealed container for a while, then open it up, and give it a smell (not a snort) - if it smells like cathinones, you've got cathinones in your sample. I'm sure there are ways to camoflage the smell, so don't rely 100% on this, but it's a great way to pick out the obvious fakes.
Beta Ketones and Various RC stims/empathogens
Naphyrone
Marquis - yellow
Mecke - no reaction (kept the brownish color it had out of bottle)
Mandellin - Clear
Robadope - Negative
Simons - Negative
Mephedrone, Buphedrone, Ethcathinone, 3 and 4 Flouromethcathinone:
Marquis - no reaction
Mecke - slight brown, almost no change.
Mandellin - slight browning.
Robadope - Negative
Simons - Positive
MDPV, MDPPP, Methylone, Butylone:
Marquis - yellow
Mecke - red-brown
Mandellin - clear
Robadope - Negative
Simons - MDPPP/MDPV Negative, Methylone/Butylone Positive
Methedrone (DANGER! BAD STUFF!)
Marquis - yellow-orange
Mecke - orange
Mandellin - orange
Robadope - Negative
Simons - Positive
5/6-APB:
Results from production 5 and 6 APB are now available:
Marquis - rusty brown
Mecke - Black
Mandellin -Purple/brown, slow to develop
Robadope - Positive
Simons - Negative
Note that the sample batches sent out was different. I suspect it was 6-APDB. It was also a superior drug, pity they didn't make more of it available.
I've also included results for a sample batch of fake 6-APB, for completeness sake.
5-IAI
Marquis - brown-grey
Mecke - yellow
Mandellin - no reaction
Robadope - Positive
Simons - Negative
NOTE: Previous 5-IAI results posted were for FAKE PRODUCT. The old, inaccurate results have been removed.
By the way, don't bother getting the real thing. It sucks - ~400mg doses, nothing exciting, and in some people (like me) it produces nothing by dysphoria. At only 50mg, i experienced anhedonia and depression for 6-8 hours, with no pleasurable effects. Favorite food tasted like cardboard, favorite games were a chore, etc. But I digress...
4-Flouroamphetamine:
Marquis - no reaction if only small amount used. If you dump a whole pile of it in, it'll turn brownish orange.
Mecke - no reaction
Mandellin - no reaction
Robadope - Positive
Simons - Negative
Notes:
Desoxypipiradrol
All slow and weak color changes.
Marquis - brown
Mecke - brown
Mandellin - yellow/brown
Robadope - Negative
Simons - Negative
MDAI
Marquis - Light brown to very dark brown depending on trace impurities.
Mecke - Dark Brown
Mandellin - Dark Brown
Robadope - Positive
Simons - Negative
2-Aminoindane
Marquis - no reaction
Mecke - brown
Mandellin - light blue
Robadope - Positive
Simons - Negative
Ephedrine
Sample from BOLT brand single constituant ephedrine pills.
Marquis - no reaction
Mecke - no reaction
Mandellin - yellow-orange
Robadope - Negative
Simons - Positive
Caffeine (anhydrous, USP)
Marquis - no reaction
Mecke - slight browning
Mandellin - no change
Robadope - Positive
Simons - Negative
pFPP
Marquis - no reaction
Mecke - slight browning
Mandellin - no change
Robadope - Negative
Simons - Positive? It should be positive...
MDAT:
Not shown.
All reactions slow. Strange colors, changing over time, all colors weak.
Robadope - Positive
Simons - Negative
Key points to take away:
These reagents are not sufficient for differentiation between cathinones of similar structure.
These reagents are not sufficient for detection or identification of 4-FA or pipirazines, nor weak OTC stimulants - though 4-FA will test positive with robadope.
These reagents are not sufficient to confidently confirm presence of mephedrone.
These reagents are not sufficient to confidently rule out the presence of most cathinones in combination with other agents that produce strong colors. Sniff test and Simons may be helpful here.
These reagents are not sufficient to confirm or rule out presence of desoxypipiradrol in combination with other agents, especially as the active dose is very low. Luckily I am not aware of this horrible drug showing up as an adulterant.
2-AI, which many people have reported dangerous reactions from, stands out like a sore thumb when tested with the mandellin reagent.
MDAI on the market is so filthy that the impurities confound identification with the marquis reagent.
These reagents are not sufficient to identify MDAT (luckily, it is obscure (hence unlikely to be sold as something else), not particularly potent or dangerous, and has a very distinctive appearance - yellow translucent crystals between 1/16th and 1/4th of an inch along their largest dimension.
Sedatives
All changes are slow, and weak. For the benzos, ~3-5mg was used per spot; an ass-whooping dose for a non-tolerant user, and still presented only weak color change that took a while to develop.
Key point to take away:
These reagents are not sufficient for testing for the presence of these RC sedatives.
These reagents are not sufficient to identify any RC sedatives even when the presence of a sedative is suspected.
Added new compounds. Added proper results for 5/6-APB
Update 13/12/10:
Added new compounds. Stitched together the best results, and added column for simons/robadope where the results were meaningful (however, due to the unpleasantness of performing the test, these are theoretical results, as you can see).
Before you begin:
Fizz: Fizz is meaningless when identifying the compound present - it only tells you that the sample was present as the HCl salt (or salt of a similar volitile acid). Hence, fizz is proportional to the amount of Whatever HCl you dumped in. When fizz is useful is if you are testing something, and you see a lot of fizz, but only a slow color change to the expected compound, or when you think you have the base, and it fizzes, you know you don't have the base.
Smell: Know what cathinones (ie, mephedrone) smell like. Buy a sample of the filthy things if you have to. The majority of misrepresented RC's on the market are cathinones being sold as something less shitty. Put your sample into a sealed container for a while, then open it up, and give it a smell (not a snort) - if it smells like cathinones, you've got cathinones in your sample. I'm sure there are ways to camoflage the smell, so don't rely 100% on this, but it's a great way to pick out the obvious fakes.
Beta Ketones and Various RC stims/empathogens

Naphyrone
Marquis - yellow
Mecke - no reaction (kept the brownish color it had out of bottle)
Mandellin - Clear
Robadope - Negative
Simons - Negative
Mephedrone, Buphedrone, Ethcathinone, 3 and 4 Flouromethcathinone:
Marquis - no reaction
Mecke - slight brown, almost no change.
Mandellin - slight browning.
Robadope - Negative
Simons - Positive
MDPV, MDPPP, Methylone, Butylone:
Marquis - yellow
Mecke - red-brown
Mandellin - clear
Robadope - Negative
Simons - MDPPP/MDPV Negative, Methylone/Butylone Positive
Methedrone (DANGER! BAD STUFF!)
Marquis - yellow-orange
Mecke - orange
Mandellin - orange
Robadope - Negative
Simons - Positive
5/6-APB:
Results from production 5 and 6 APB are now available:
Marquis - rusty brown
Mecke - Black
Mandellin -Purple/brown, slow to develop
Robadope - Positive
Simons - Negative
Note that the sample batches sent out was different. I suspect it was 6-APDB. It was also a superior drug, pity they didn't make more of it available.
I've also included results for a sample batch of fake 6-APB, for completeness sake.
5-IAI
Marquis - brown-grey
Mecke - yellow
Mandellin - no reaction
Robadope - Positive
Simons - Negative
NOTE: Previous 5-IAI results posted were for FAKE PRODUCT. The old, inaccurate results have been removed.
By the way, don't bother getting the real thing. It sucks - ~400mg doses, nothing exciting, and in some people (like me) it produces nothing by dysphoria. At only 50mg, i experienced anhedonia and depression for 6-8 hours, with no pleasurable effects. Favorite food tasted like cardboard, favorite games were a chore, etc. But I digress...
4-Flouroamphetamine:
Marquis - no reaction if only small amount used. If you dump a whole pile of it in, it'll turn brownish orange.
Mecke - no reaction
Mandellin - no reaction
Robadope - Positive
Simons - Negative

Notes:
Desoxypipiradrol
All slow and weak color changes.
Marquis - brown
Mecke - brown
Mandellin - yellow/brown
Robadope - Negative
Simons - Negative
MDAI
Marquis - Light brown to very dark brown depending on trace impurities.
Mecke - Dark Brown
Mandellin - Dark Brown
Robadope - Positive
Simons - Negative
2-Aminoindane
Marquis - no reaction
Mecke - brown
Mandellin - light blue
Robadope - Positive
Simons - Negative
Ephedrine
Sample from BOLT brand single constituant ephedrine pills.
Marquis - no reaction
Mecke - no reaction
Mandellin - yellow-orange
Robadope - Negative
Simons - Positive
Caffeine (anhydrous, USP)
Marquis - no reaction
Mecke - slight browning
Mandellin - no change
Robadope - Positive
Simons - Negative
pFPP
Marquis - no reaction
Mecke - slight browning
Mandellin - no change
Robadope - Negative
Simons - Positive? It should be positive...
MDAT:
Not shown.
All reactions slow. Strange colors, changing over time, all colors weak.
Robadope - Positive
Simons - Negative
Key points to take away:
These reagents are not sufficient for differentiation between cathinones of similar structure.
These reagents are not sufficient for detection or identification of 4-FA or pipirazines, nor weak OTC stimulants - though 4-FA will test positive with robadope.
These reagents are not sufficient to confidently confirm presence of mephedrone.
These reagents are not sufficient to confidently rule out the presence of most cathinones in combination with other agents that produce strong colors. Sniff test and Simons may be helpful here.
These reagents are not sufficient to confirm or rule out presence of desoxypipiradrol in combination with other agents, especially as the active dose is very low. Luckily I am not aware of this horrible drug showing up as an adulterant.
2-AI, which many people have reported dangerous reactions from, stands out like a sore thumb when tested with the mandellin reagent.
MDAI on the market is so filthy that the impurities confound identification with the marquis reagent.
These reagents are not sufficient to identify MDAT (luckily, it is obscure (hence unlikely to be sold as something else), not particularly potent or dangerous, and has a very distinctive appearance - yellow translucent crystals between 1/16th and 1/4th of an inch along their largest dimension.
Sedatives

All changes are slow, and weak. For the benzos, ~3-5mg was used per spot; an ass-whooping dose for a non-tolerant user, and still presented only weak color change that took a while to develop.
Key point to take away:
These reagents are not sufficient for testing for the presence of these RC sedatives.
These reagents are not sufficient to identify any RC sedatives even when the presence of a sedative is suspected.
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