You reach ~%80 purity at 100x. %100@~125x The difference is truly negligable. Your math is a little off too. If you extract 112 grams worth and at it to the last gram, you'll have 113x. Standardized extractions are difficult to do and require a better set-up than non-standardized extractions. If you just make a 50x or so NS extractions....you should be more than good to go. At a certain point extraction becomes meaningless and redundant. In it's pure leaf form you could sit and smoke the shit all day and your lungs would say FUCK YOU before you got even close to high. At 20x you can easily get the dosage you're looking for without going overboard. at 40x & 50x You have to be fairly tolerant of the substance and still be good at measuring miniscule doses. Anything stronger is simply retarded.