Best Water Type for HCG mixing?

[DaveK22]

Say either one needs to mix more water than what is provided with an hcg kit or just prefers to supply their own water...what would be the best & longer lasting water type? I buy from westend supply & they list 4 types, but think plain sterile water not a good choice. The other 3 listed are:
1. Bacteriostatic Water- benzyl alcohol (BnOH) added
2. Sodium Chloride .9%- "Each mL contains sodium chloride 9 mg. It contains no bacteriostatic, antimicrobial agent or added buffer and is supplied only in single-dose containers to dilute or dissolve drugs for injection."
3. Bacteriostatic Sodium Chloride- Seems to be a mix of 1 & 2 above

ref:

 

[Vince]

The bacteriostatic water is used because it contains a preservative that helps extend the HCG life.
The next best thing is Sodium Chloride, use if you're allergic to bac water.