I can get mine to hold at 50mg/ml with only BA, BB, GSO. I don't use any other chemicals. It will not hold at any higher dose without additional chemicals like gcol, eo, bs. I don't like those chemicals because eo people have allergic reactions to and gcol smells bad and people have said they can smell it coming from their pores when they sweat, bs is an alternative to gcol and don't have the smell but I prefer to just make it at 50mg/ml and shoot more if need be.
Thanks
TMM