u can use 151 or everclear.
dose it how you want it like 10mg/ml, 25mg/ml, etc...
if you're not using graduated glassware, estimate the powder to take up 1ml. and calculate from there. it's convenient to have the glassware tho. i got a bomex 100ml cup that's marked every 10ml's. comes in pretty handy and it's a only a few bucks.