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Using the complete tables (over 100 substances) for each reagent

Use the search criteria (colour seen) for each reagent to indicate the possible substances for the colour response seen for the respective reagent. When all the results are visible scan across to see which substance is common to the colour responses. 


Just use 3 characters to define colour so you get all colour responses e.g. blu for blue/bluish etc. Type "No reaction" if no reaction is seen. Use some of the tips on the Overview/Testing page to achieve better colour recognition if using standard dropper based reagent testing.


We will try and add a colour spectrum aspect to the charts so that a purple input will also give "similar" colours e.g. violet. At present you will need to do this manually.


You can also search by substance to see what colour should be produced/seen. However, this table is best used for finding the possible substances from a particular colour response.


Note:  a "no reaction" (listed in charts) is a positive response and hence can be used to assist in identification, but only if stated on chart. 


This is best suited for a screen that can show all tables at the same time side by side. For mobile devices  (small screen) open multiple browser tabs of the same page, and view for each reagent per tab once search criteria entered so can switch between each easily to see/compare results.

Marquis Reagent

Mandelin Reagent

Marquis Reagent & Mandelin Reagent Charts 

Information supplied in conjunction with University Manchester Student Union.

The supplied reagents:

MARQUIS Reagent (Clearish colour):

Ideal for testing of Amphetamine-type compounds (Speed etc) including Methamphetamine, MDMA (Ecstasy/Molly), MDA, MDE, Opiates (Morphine, Codeine or Heroin), a general screening agent for other drugs e.g. Research Chemicals etc.

  • Can test for the presence of about 180 different substances in total

MANDELIN Reagent (Yellow colour): 

The Mandelin Reagent is ideal for detecting the presence of MDMA (Ecstasy/Molly), MDA, MDE, ketamine, certain substances from the 2C and DO groups, certain opiates, and the deadly adulterants PMA and PMMA.

  • Can test for the presence of about 110 different substances in total


Note: When testing you can either test for a "preferred" substance, or you can test for adulterants. If you are testing for a preferred substance you will generally look for reagents that confirm the presence of that substance the easiest and clearest i.e. Gallic Acid for MDxx (MDMA, MDA, MDE, MDEA). However this is not an ideal testing method. You should be testing to disprove adulterants primarily and then reaching a conclusion that the substance is the desired substance. 

The reagents contain strong acids with other potentially dangerous chemicals and are strong enough to burn skin and clothing. If you get some on you/clothing, then immediately wash with soap (optional) and water.


Most colour reactions given are what you should see after a few seconds to 1 minute (max). Some colour reactions will be very similar. Using all the reagent tests individually will help to distinguish between each. Generally, three different Reagent tests are required to roughly determine sample content. However, the more reagents that are tested with the more chance there is in identify adulterants.


These reagents can only determine the PRESENCE, NOT QUANTITY or PURITY, of a particular substance. Dark colour reactions will tend to override reactions to other substances present in the test substance.


Only a very small amount is required for each test. Too much, will “overload” the test and colours will be difficult to distinguish. Basically, you will not be able to see the subtle changes that some substances can produce which will make it harder to determine what the substance is e.g. missing a initial purple phase before the test goes very dark / black.


Essentially, less is more in this process.


Crystals/pills need to be in their finest powder form for testing. Scrape a small amount off and then make sure it is crushed down to the size of salt grains (size of a full stop), not sugar grains as too big.


If crystals, test each individual lump/clump as there may be a mixture of similar looking substances added to baulk out the product.


The process of testing destroys the substance being tested when added with the reagent test.


Pre-testing requirements ampoule (small glass tube) based test:

  • In order to get the best out of testing you need to test in a well lit area (generally the whiter the light the better so colours are not tinted).

  • White background (to assist colour determination)

  • Near water – in case of accident

  • In a place where you are not going to be disturbed

  • Pen & paper (white so can be used as background) to note the colour changes etc

  • Suitable surface and tool to scrape and grind test substance

  • Timing device up to 60 seconds

  • May be a friend to help in identifying any colour changes and noting them down.


Using the tests:

  1. Always test with Marquis (clearish liquid) first then Mandelin (yellow liquid).

  2. Add about 10 grains (a grain is the size of a full stop) of FINELY ground substance to the test reagent.

  3. Colour changes can be very quick so be prepared to watch for colour changes as soon as substance added.

  4. Only consider the colour changes up to 60 seconds after adding substance to test reagent.

  5. Make a note all main colour changes and when they occur (how many seconds after adding the test substance to the reagent).

  6. Discard the completed test safely (rinse with water and put in bin) and repeat with another reagent.

  7. Use the provided charts, on this webpage or on the instruction leaflet, to determine what may be in the substance.

Example of result: purple (2 sec) > blue > black (60 sec)

Testing (overview)

This information is best viewed in Desktop mode, or on a wide / large screen, to be able to see all the content as intended. If you are using a small screen / smartphone use the quick link menu below to navigate the page.

Marquis reagent chart
Mandelin reagent chart
Testing (overview/procedure)
UMSU Supplied Reagents

If you have a question, or are unsure of anything here, you can email us at and we will get back to you asap.

How to use the Search charts
Additional information on each drug can be found at:
Pros & Cons of these types of test

The Pros and Cons of ampoule (small glass single test) based testing

Cons of ampoule based testing

  • The colours can be difficult to see due to the reflective glass and small size of ampoule

  • Due to the very small amount of test reagent only a very small amount of test substance can be used.

  • Too much test substance can overload the test reagent producing dark responses which are difficult to interpret

  • Initial colour responses can occur very quickly and can be missed when concentrating on adding substance

  • Spotting / focusing where the substance is within the ampoule again can lead to missed initial colours

  • Missing initial colours, or overloading the reagent, will mean a re-test is advised.

  • More than one test needs to be undertaken to confirm initial result (testing different crystal/pill)

  • Due to the very low amount of test reagent tilting etc cannot really assist in colour determination

  • Ampoule based testing is costly when considered against multi drop testing.

  • Testers can see what they want to see rather than what is actually seen.

  • Requires suitable environment (well lit, white background and free from disturbances)

  • Made from thin glass and can break / cut

  • Requires a white (pure) background without reflective light to see colours correctly.

  • The presence of a kit in external social environment could provoke questioning if seen

  • Harder to determine substances containing several different adulterants


Pros of our ampoule based testing


  • Portable

  • It gives you the opportunity to try out testing at a low cost

  • Long shelf life 

  • Can help to identify a reasonable number of adulterants

  • No additional test surface required that is reagent resistant (enclosed test / portable)

  • No surface cleaning etc once test completed

  • Better than not testing


Alternatives to single reagent test based testing:


  • Multi drop testing

  • External testing (Lab)

If you want to test your drugs on a more regular basis, it is better to use at least 4 or more types of multi-use reagents. These are dropper bottles of the testing reagent that are cheaper in the long term and will enable you to more accurately identify a wider range of adulterants. You can purchase these on this site, or on other websites

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