you need to just use the search function, there are numerous threads how to mix this.
250iu twice weekly on cycle somewhere between start of cycle and 3rd or 4th week all the way thru your cycle.
mix 1ml of the bac water in with the HCG powder form, transfer that to a 10ml vial, add another 9ml of bac water and you got 5000iu of HCG.
This is how I was told to do it, someone else can chime in, but there is definitely an indepth post somewhere here about it