Mix 100 syrigne units of bac or sterile water to the 10IU vial.
Then each 10 syrigne units = 1IU.

Ie, 25 syrigne units = 2,5 IU of HGH.

Later, if you buy 8IU vials instead of 10IU you can mix 80 syrigne units to make it easier for you to messure.