I believe the BA is more useful if the vial sits for awhile after reconstituted (in the fridge). It keeps bacteria from growing inside the vial.https://www.mountainside-medical.com/products/sterile-water-for-injection-20ml-25-pk
I use this stuff even though there is no BA in it I have never had any issues with it. As always I can always add the BA if needed. But 25 bottles for 79 bucks
But just so we are clear I have never added BA to it. I use only sterile water and no issues or pip or welts or anything
I would think that sterile water would be fine by itself if it was used as soon as the hgh was reconstituted. (One time use) or maybe even a day or two after as well.
I wouldn’t let it sit for a week or longer without BA. But that’s just my personal beliefs.
In short, if you run a vial every couple of days then I’d think sterile water alone is fine. If you run a vial a week I’d use bac water, just to be safe....
generally speaking.