8th August Edit: pictures have expired, I forgot to set them as indefinite. If you want me to re-upload them just let me know :)
I knew beforehand what I was getting in to, as several people swore that FC was cutting shit quality heroin with fentanyl. On the other hand, there were a few vocal people who swore by FC at a borderline shill level. The biggest indicator of a fentanyl-like substance was a reported shorter duration; regular users would awake after 6 hours of sleep and be in withdrawal, whereas heroin typically takes up to 12 hours. I placed an order in for 1 gram of '#4' with the intention to run thorough tests on it before even considering ingesting it. I also received a ~10mg sample of FC's previous batch, I was told it arrived as a grey powder which quickly turned brown after a day of opening it and became sticky if left to the air. The powder costs £50 for 1 gram (~$80, €70).
Presumptive tests
The '#4' arrived as a fine white powder, no clumps or rocks, very fluffy and it was slightly overweight. I undertook several presumptive tests on the white powder. As a control I used GentsChoice #3, although its purity is unknown it is praised by several people and reacts instantly in the tests, agreeing with purported high purity. These tests all use concentrated acid (typically sulphuric) in excess, thus #3 is instantly converted to #4. Sadly, I did not have a control for fentanyl; otherwise I would have run that too. Pictures were taken after reaching an end point for a few minutes and textually tabulated.
Presumptive tests used (6): Mecke, Marquis, Mandelin, Froehde, Liebermann and Gallic Acid.
Presumptive test comparison pictures
Test | Expected Heroin | Expected Fentanyl | Sample | Control |
---|---|---|---|---|
Mecke | Deep bluish green | Orange>Brown | Blue, Orange>Red | Deep bluish green |
Marquis | Deep purplish red | Faint yellow | Faint brown | Red>Deep Purple |
Mandelin | Mid-reddish brown | Green | Olive, faint blue | Olive>Brown |
Froehde | Deep purple>Green | No reaction | Very pale blue | Brown, Red, Purple |
Liebermann | Brown>Black | Reddish | Fluorescent yellow | Brown>Black |
Gallic Acid | Unknown | Unknown | No reaction | Green>Brown |
From my deductions, there is zero heroin present, or in such a miniscule amount it cannot be detected. All results were faint for FC gear, indicating very small amount of active ingredient which, along with test results, are suggestive of fentanyl or certainly anything other than heroin. I confronted FC about this, and he was adamant that there was definitely not fentanyl in his product and I must have done the tests wrong because he had almost no negative reviews. He was right, not a single review complained about his product being fentanyl, they all praised it. He offered a refund, which I took in full as the powder was worthless to me.
Qualitative Analytical Analysis
Knowing that there was unlikely any heroin present, the next step was to use proper analytical equipment to determine the exact compound(s) present. Small quantities of the white powder and the brown powder were analysed. For both powders the major constituents were (in order): Paracetamol (Acetaminophen for Americans), Caffeine and Ocfentanil
Ocfentanil is an analogue of fentanyl. It is thought to be x2-3 times stronger than fentanyl from animal models and human volunteer tests.
So there you have it, it can finally be confirmed. He is selling a fentanyl-based mix which is dirt cheap to make and he is profiting massively for it. This powder may not be properly mixed; anyone who does not have a big tolerance may find a hotspot and end up dead. Clearly reviews do not hold much weight, I cannot believe that people blindly give 5/5 for fentanyl without testing it or realising it is lasting way shorter than usual. However, several reviews state they ordered 1g and received 2.5g so they probably don't care. Since I tested two batches, this is not a one-off thing.
Take care, and avoid FC.
super happy theres someone doing tests on h. thanks op.