Ok bro, remember the concentration of the hcg depends on how much of the water you add. In this case @250IU per/ml there is no reason to add so much water (10mls). It doesn't sound like you have insulin pins yet, are you needing to inject right away or can you wait a week? If today, then mix half (5ml) the water into the powder. This way, 1cc/ml on your 25gauge pin will equal 500IU. Also, you can inject into the muscle like anything else or you can pinch a fold of fat on the stomach and inject into that. Typically, injecting into the stomach fat is done with a 28 or 29 gauge insulin pin type u-100 (they are $7 for 25 pins on the getpinz.com website). The way I look at it, you should inject into the subcutaneous and save the scar tissue for later and better drugs.
Oh yeah, if you add 5 mls of water than you would draw up into an insulin pin the whole way to get 500IU (the whole syringe is the equivalent of 1cc).
Happy nut growing.
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