I have few questions prior to injecting HCG

[Gunsmoke123]

1. I ordered HCG from rxhealthdrugs and it came in a glass vial.
Should I just snap the glass with my bare hands?
2. How would that affect mixing the powder with bac water or should I just use rotate-the-glass mixing technique?
3. I would like to do 90 degree Sub-Q injections in my stomach fat (I dont have a lot of it though), what kind of needles and syringes should I buy for it?

Thanks in advance!