If something goes wrong
The vial sucks the water in by itself
Normal. Many vials are under vacuum. Let it draw in at its own pace rather than forcing the plunger, and keep the needle against the glass wall so the stream doesn't hit the powder directly.
Powder is stuck above the liquid line or in the stopper
Tilt and roll the vial slowly so the solution washes the upper wall. Don't invert and shake. If a little stays lodged in the stopper, that peptide is effectively lost — aim lower on the wall next time.
It foamed up
Usually from injecting too fast or shaking. Let it settle; foam itself isn't contamination. Inject more slowly next time and swirl rather than shake.
It won't fully dissolve after a few minutes
Leave it at room temperature and swirl occasionally rather than adding heat or agitation. Persistent undissolved material after extended time is worth questioning — along with the COA.
My draw is only 2–3 units
That's very hard to measure accurately on a U-100 syringe, and small errors become large percentage errors. Use less bac water for a stronger solution, or a smaller syringe with finer marks. The table above flags these.
I added the wrong amount of water
Nothing is ruined — the peptide quantity hasn't changed, only the concentration. Re-enter the volume you actually used and recalculate your draw.
