thanks for your reply,and info on bac water.i am going to get 300iu blue tops so for that i will need 30 ml of bac water is that correct,the blue tops come in 4iu vials, i am going to do 2iu a day 5x week, how much bac water do i put in a 4iu vial,it would be better if they were 10iu vial then i know i would put 1ml of bac water in, can you please help on this.