HCG help needed

I feel like a dumbass cuz I can't figure out the formula after doing searches, so hopefully some kind souls can help.

I got some 5,000IU vials of HCG, and also got some 30ML vials of BW.

Question 1 - Obviously one vial of HCG can make 10 500IU shots (which is the dosage I want), but how do I know how much BW to mix? How much of the 30ml BW vial do I put into the 5,000IU vial of HCG? I'll be using 1/2CC slin pins, btw.

Question 2 - First time I've gotten HCG, and the powder's in small vials ending in a teardrop shape (all glass). I'm sure it's obvious once I figure it out, but where do I open it? LOL

Thanks for humoring me. :)

If you mix in 5cc of water youll 1000iu per cc if you mix in 10cc of water you'll get 500ius per cc. Break the little amp at the 'neck', pretty much half way between the bottom and top. It doesnt really matter where you break the amp though its just a little bit of powder inside, so as long as you dont lose any powder break it where ever you want.

Cool man, that's what I needed. Thanks a bunch!