if this is your first time i suggest that you use a STB tek - its 90% foolproof and commonly yeilds 92-96% spice purity from my experience - after you get the hang of this method and if you want ultra pure then move into a double A/B extract with a rc and colomn to finish off - this will produce a slightly lower yeild but will produce 99.7+ injectable quality -- most inportant thing i can offer to you would be the advice of glass buy real lab glass mason jars and milk jugs are nice for the first try but once you get into glass and learn to use it you8 bring yourself into a level that allows you to produce fast ultra clean reactions and extractions - having a set of glass also allows one to produce very reactive compounds like potassium chlorate for all your 4th of july pleasures
my 2 fav glass sites
http://www.labdepotinc.comhttp://www.sciplus.com"Oh Dinah. Itβs just a rabbit with a waistcoat... and a watch?!"