Froehde Reagent Description
Use the Froehde reagent testing kit to:
- Identify 5-APB and 6-APB, which react similarly to MDMA with the Marquis test. Froehde yields dark purple with 5-APB/6-APB, and black with MDMA/MDA/MDE.
- Test for synthetic cathinones (aka “bath salts”) like methylone, ethylone, and MDPV.
- Screen for the dangerous compounds PMA and PMMA, which are sometimes sold as MDMA.
- Test for heroin and other opiates (along with Marquis and Mecke).
- Screen for cuts in ketamine, as this test doesn’t change colors with pure ketamine.
Test Kit Includes:
- Bottle with testing fluid
- Color chart with instructions
- Multiple-use testing vial
- Protective storage/transport jar
Test Kit instructions
- Put a small sample into the testing vial. Your sample should be about this size: (●)
- Hold the testing vial above the open plastic jar, so that if a drop misses the vial, it will land in the jar.
- Place 1-2 drops of the testing liquid from the dropper bottle onto the sample. DO NOT let the sample touch the bottle nozzle, or the reagent will get contaminated!
- Watch the color change over 30-60 sec.
- Compare the reaction color with the color chart provided.
- Tightly close the dropper bottle. If you’re using more than one testing fluid, make sure you only open one bottle at a time. If you accidentally switch caps, the testing liquid will get contaminated and ruined.
- Thoroughly wash the testing vial after each use.
- Store the dropper bottle in a cold place to maximize shelf life, like a freezer.
Froehde Reagent Color Reactions
Froehde Reagent Color Chart Image
While other substances may also produce color changes, we have found Froehde to change colors with:
25I-NBOMe, 2C-B, 2C-E, 2C-I, 3-MeO-PCP, 5-APB, 5-MeO-DMT, 6-APB, DMT, ephedrine, ethylone, heroin, MDA, MDE, MDMA, mescaline, methylone, modafinil (Provigil), morphine, paracetamol (acetaminophen, Tylenol), phenacetin, PMA, PMMA, sugar, vitamin C
While reagent testing is the best method for on-the-spot testing, it is never 100% conclusive. There are many variables that can impact what the reaction looks like. Lighting, impurities, and unwanted substances in your sample may all play a role.
No drug (whether legal or illegal) is completely safe, we recommend avoiding all recreational drug use.