Super solvent aka super magic solution seems to be a secret and most people say it doesnt contain any BB or BA. I got mine from Mr. T and the stuff has a very strong smell. One drop will stink up my entire house but it works great and I have made test prop at 200mg/ml and drol at 50mg/ml with it.
I have always used 5% with the drol, test prop, and mast and never had any pain with it at all. It is great for making high concentrations of difficult hormones. I just wish someone would tell everyone what was in it so we can make it ourselves.