You absolutely can use this for sure- as the NaCl .9% contains hydrochloric acid to bring the waters pH to 5.3 which is optimal for HGH reconstitution and preservation for 3 weeks.
It's more than twice as cheap here (http)//www.mountainside-medical.com/products/Sterile-Water-For-Injection-Bacteriostatic-Water-30-ml.html than at liquidations-outlet.com. ($2 for 30 ml vial of bacteriostat water)