I wouldn’t consider the reply rude, it’s just that this fact is true for most of us and OrgUnikum was being protective towards you. Nonetheless he gave you the information you asked for, which I didn’t due to the fact that my attitude was also being somewhat protective. Work with this material should be carried out with all the PPE you can get, meth chemistry is pretty much entry level compared to this purification procedure. Remember that most glassware and PPE should be destroyed after use for safety measures, a tiny stain on the table or lab coat is potent enough to kill several people. I trust you have enough dangerous chemistry experience with meth to be able to handle the freebasing/salt formation. While P/I2 reduction is an explosion/fire hazard this is a toxicity one, as you may know that a big wet towel can be used to stop a runaway meth synthesis (I even bet it might have saved your freedom before), in the case of fent you need like a super small room that you will cover with thick plastic folil all over and hazmat+gas-mask+stirdy gloves and means of undressing the hazmat without touching it directly. And of course making a dilution (cutting) of the fent which must be mixed for extended time as not to have the eventuality of hotspots (someone I know died of fent hotspot). I was the person that instigated the destruction of the material and provided the method. I like fentanyl but I only accept pharma grade in the case where it isn’t available to me at will. This is how I never get addicted to opiates, or at least so far I only had the surprise of the addiction I was certain of proven to be illusory. Best wishes! P.S. please do research the approach and ask for the expert’s opinion, try to find someone with former hands-on experience as a guide.