Just brewed 4 30 mL vials of test C 200 mg/ml, 2 30 mL vils of Mast E 200 mg/ml, 40 mL EQ 425 mg/mL. I used only BA and BB with 17 grams of EQ, it held fine. So that I can use .5 mL in my syringe to get 200 mg of EQ. Then the oil from the other 2 mL of test and Mast will make the oil i missed from the EQ. First time brewing came out great. I actually forgot the oil for the EQ but already filtered it. But it holds and works fine.