Bestine works very well, IMO, for a very selective N, N DMT extraction. SWIM always gets clear white at first pull, and then varying shades of yellow on consecutive pulls from MHRB that has been STB'd with lye... Though, SWIM is very interested in doing a Q21Q21 Jimjam A/B next time... Good luck, and some advice:
Don't shake the solution of lye and water, it will burst on you, and the burn isn't pleasant
Always have Vinegar around, lots of it, for spills, and work near a shower or hose, in case you need to douse yourself
If you use heat to extract, use glass, a borosilicate glass, like pyrex, or mason jars
Don't shake heated bottles of Bestine, it will burst on you
Lastly, if you freeze precip your dmt, let the jars come to room temp before you open them, as opening them cold, can introduce water condensing from the atmosphere, and that's a bitch to wait for it to dry(this was a tip from a friend, never bothered to confirm it)
Namaste