just because i LOOOOVE math, not that i would ever consider actually doing this sort of thing...    if you were going to work with 3 lbs of mhrb, how would you go about calculating how big of a separation funnel you would need to buy?  i was able to figure out approximately how much liquid would go into that much and i think i figured on around 1500 ml, but not sure, and then not sure how much volume that weight would be...        also, if you have a separation funnel, do you also need a vacuum buchner funnel, or  is just the separation funnel ok?