Basically i extracted using limonene from a stb solution of root bark, then after a few 100 ml limo pulls , i added fumaric acid saturated water for, about 50 ml for a total of 4 times. Decanted the water after mixing it well with the limo and placed it in the freezer. Washed it with water after it was solid ice to take away the limo smell. Afterwards i melted it and evaporated it on a hot plate.
As far as i know the plate never reached temps greater than 80 Celcius. what i was left with was a hard crystal, smelling amost like freebase but not quite, hard as heck and amber in color. A bit sticky on the fingers too. Did i also pull something else or was there a mistake in my tech. The limo is left clear and with a light yellow color.
also , the product weights around 4 grams , from 250 grams of bark. I should also point that i have done STB before , only using naphta instead of Limo...i just love the idea of a reusable and non toxic solvent.
thanks in advance guys