I want to help a friend try to do a acetone wash of some mdxx and posibly some street yay. I found a site selling Acetone, 16oz, Reagent ACS, 99.5%. Is this already considered dry acetone? The site is science company dot com. The process seems pretty simple.
Check out Le Junk's Acetone Purification thread on bluelight. This has the most accurate information regarding purification of adulterated coke.
http://www.bluelight.org/vb/threads/317605-cocaine-purification-the-absolute-final-thread