you need the version with 50 ticks per 1ml, you will be dealing with .1,.2,.3 ticks with GHRP and CJC etc....so you need at the minimum 50 ticks to work with. You probably have 5mg or 5,000mcg of GHRP that you will reconstitute with 1ml bac water, and say you need 200mcg per dose for instance, that is 4iu or 2 ticks at 1ml bac water ....OR you could use 5ml of bac water per 5mg/5,000mcg of GHRP and 10 ticks would be 200mcg if you want to stick with these slin pins....but that much water is not recommended nor will it probably fit into the tiny vial....10 is just way too big, OK for HCG though.