Hey guys! I'm back from my date and I'm not getting laid so I thought I'd add some more notes (...though, I do have a friend of mine on torchat who asked her boyfriend over and they're asking me to suggest how he should tie her up so they can take photos for me.. wow my life has become strange and wonderful recently). This is going to be very quick & dirty again, I'll sound like a rambling mad man but it looks like you guys could use the food for thought so here is some: I mentioned hydrochloric acid a few times in the last post. "Muratic acid" is HCl in water at 28% concentration, it can be found at pool stores for like $10 for a gallon. Be careful with this, last time I bought some fiddling around with purifying cocaine either this, acetone, or ammonia ate through a fingernail. It grew back but something in this mix is bad for skin. When I said that converting from #3 to #4 is as simple as putting it in water and adding an acid, and converting from #4 to #3 is as simple as adding ammonia, that's true but I should point out to do so slowly. For cocaine, if you move outside of a certain pH range (either direction - too acidic or too basic) it breaks down to it's components. I don't know for sure but I'd assume the same is true for heroin. To avoid this you add the acid (or ammonia) slowly and stir lots. You can get a pH meter at a nursery (where you buy small plants) for $30, used for testing soil. When you convert back and forth make sure not to leave a bunch of extra acid in there. Check the ph when you're done, if you leave extra acid that's bad for your veins if you IV, and bad for your nose if you snort. Doesn't really bother your lower intestine much since it's used to processing Jalepenos. When you convert from a base to a salt the molecular weight changes from the additional atoms. I don't know the specifics for heroin but if I recall for coke the molecular weight is like 304gm/mol for cocaine base and 340 gm/mol for cocaine hcl. There are two reasons this is important: 1) when you send out for purity tests they convert it down to the base first and do their tests, and then return the results in the base form rather than the HCl derivitive. The extra step of converting back to HCl would just add inaccuracy and is unnecessary. This means when you have a lab test cocaine the maximum percentage of purity they will return is 89% (304gm/mol / 340 gm/mol). This is true from their point of view, you gave them cocaine-hcl and you they told you that it was 89% "cocaine [base]". That's why I refused to post purity numbers on the coke I sell (besides not having tested it) - people claim "94% pure" which really just means they're full of crap.  This idea carries to heroin too, if you take #4 and test it for puritty he lab will return a figure based on the weight of the freebase which is lighter, just gotta keep that in mind. 2) if my research is right diacetylmorphine base ("#3") weighs 369 gm/mol and the hcl derivitive weighs 405 gm/mol. That means if you took 1gm of pure diacetylmorphine base and acidified it you would have 1.09gm. This is important to understand because.. for some freaking reason people charge more for #4 than #3, which in a way is charging for lemon juice. I mentioned purifiation. Purification goes like this: note: henceforth "morphine" not "diacetylmorphine" because it gets old typing that out. 1) take your #4 and dissolve it in water (oh no it disappears! don't worry it comes back) 2) remove anything that did not dissolve as it was not morphine hcl (there should not be anything that did not dissolve, this is more of a problem with low end drugs that are cut by idiots, like street coke and street bth).. 3) add ammonia slowly until your morphine precipitates out, watching the ph meter. When you add a drop of ammonia the ph will change. ph is essentially the measure of free hydrogen. As you stir morphine freebase will drop out of suspension, becoming a solid in the water since it's not water soluble. Keep adding ammonia one drop at a time until the ph stops going to center, which will be an indication that you have no more morphine to remove. NOTE: Everything in the water is water soluble because you removed it after step 2, but not everything is morphine. NOTE #2: The stuff that precipitated out is what you awnt, but it's not not guaranteed to be morphine (it's not even guaranteed to be an alkaloid), however any morphine you started with is in there somewhere. NOTE #3: Whatever did not precipitate out and is still in solution in the water is guaranteed to NOT be morphine at this point, so you want to discard that. 4) remove the stuff that dissolved from the water using a filter. You can get this at a chemistry supply store, there are different types of filters, for this purpose you want a high flow filter not a qualitative filter. The pro chem stuff works great because it was designed to, but honestly a coffee filter will do the job. filtering is slow, you can filter faster by decanting, which basically means to use an eye dropper to either filter out the stuff which is obviously water, or to suck up the stuff which is mostly heroin - once you separate "most" of the water filtering becomes easier. 5) "Realize" (as Ali G says), now you have removed everything except stuff that:  a) was originally water soluble  b) can exist in both a base and a salt derivitive  this means you have already removed a lot of stuff from your dirty mix. 6) next filter the heroin through a mix of ether and water (almost all ether) It will be solid in the water and go in to suspension in the ether. Anything which is solid is not an alkaloid, remove it. The stuff that dissolved in to the ether is probably an alkaloid (and since it's unlikely that your drugs were cut with other drugs, this means the moprhine you want) - i'm not sure that non-alkaloids cannot dissolve in to ether, but that's the idea. I'd venture a guess that this is mostly true. 7) evaporate the ether you now have a solid that is probably pure freebase morphine. Weight it. This is your purity as a lab would present. add 9% to this to get the percenage of your #4 which was morphine 9) convert ti back to #4 by putting it in a glass of water and adding a bit of muratic acid. same precautions as before with the pH meter and stirring just in reverse. When it all disappears you can stop 10) evaporate the water You now have highly pure diacetylmorphine. Be careful, this is 3x as potent as the #4 you buy on SR and a hell of a lot more potent than what you'll find on the street. The process listed above works for all alkaloids. You can clean up coke with it for example - in fact, maybe the coke guys will find this and copy it, feel free to post a link to this if anybody is interested, earlier today a guy was trying to measure purity by exploiting the soluability characteristcs of coke in low water acetone and chloroform. I think that guy got the idea from the sme place I did, the soluability chart from "the cocaine handbook" written back in the 80s. If so then this process is more precise.