Don't use the solvent that comes with hcg as its just sterile water and will only stay good for a few days. Google "buy bacteriostatic water." And get a 30ml it's cheap like $5. Then order a 10ml sealed vial. Google it they are cheap too like 2 bucks. Add 1cc bacteriostatic water to the amp and let it sit for a few minutes to mix. Then add another 1cc bacteriostatic water to the vial. Then suck out the mixed hcg and gently add it to the vial. Don't squirt it in fast just let it slowly drizzle down the vial. Then gently swirl it around a little. Now you have 2ml total and on an insulin pin each 10mark is 250iu. Assuming you are using a 1cc insulin pin it will say 10,20,30,40,50,60,70,80,90,100.
So each "10" is 250iu. I wouldn't recommend more than 500iu per shot and a max of 500 iy 2-3x per week on alternating days.