The last 7% is not just water, but also shit that makes you puke, sick etc.
SWIM tried a another MeOH extract, this time with a lot more pills. He let it left alone i 48hours (swirling now and then), filtered, frezzed, filtered, saved the raw ephedrine crystals + crap. Took the filtered pills mass and added new fresh MeOH and waited 24hours. Filtered, frezzed, filtered and let the MeOH evap. The first pull gave about 27g and second 4,2g.
After 3 boils in dry Xlenxe, the crystals was allowed to dry. Then SWIM soaked them in dry acetone in about 30sec. and filtered again. Yield = 83,5%
SWIM just have one concern, is the epehdrine clean enough? SWIM tried to use Placebo's "clean" test. The acetone, which was used to that last wash, was added a littel NaOH and water. The water was defently not clear, but to much NaOH was used, so if was hard to see if the crap in the water was NaOH or pill crap.
Is there any tests you can use to test your purity of your ephedrine?