Sketchy BAC supplier?

Hong Kong Yanpep International
Endotoxin testing usually shows off-brand and Chinese BAC are sketchy. Even the Amazon BAC tested dirty before they banned it. Hospira literally says on the label it's sterile and non-pyrogenic.
 
The pH testing approach for BAC quality verification is worth the minimal cost and effort - the pH range for injectable BAC is narrow and outside that range means either the formulation is wrong or something has degraded. The test strip method takes seconds and removes the guesswork about whether a cheap lot is actually within specification.
 
the waste ratio on 30ml BAC when you're only using 1-2ml at a time is the frustrating math - you're paying for and disposing of most of what you buy. the community workarounds for this tend to involve either sharing a larger volume across multiple compounds at once or moving to smaller container sizes when they're available
 
That's exactly where my head went too, initially. But genuine pharmaceutical-grade diluent is so easy to find and costs barely over a dollar per reconstituted vial, hate the idea of ruining a mixed vial just to save that dollar.

Even considered brewing my own preservative solution at home, since I already make a few basic solvents a couple times yearly for other projects. Kind of leans into that whole amateur-chemist vibe. (Turns out synthesizing peptides themselves would actually be simpler than making that particular solvent.)
 
Picking up bac water through a mainstream retailer, not sure that even counts as a rookie mistake. Seen way sketchier stuff posted here.
 
Honestly even a basic diluent option sounds fine given the situation.

If you absolutely must: one vial of sterile water for injection plus a small measured amount of preservative added. Please don't take any unnecessary risks!!
 
Supplier paperwork for bac water, like for peptides, isn't worth much. You'd need independent verification, ideally several for the same brand, plus confidence that what arrives is that brand. If you live in the US and can pick up real Hospira easily, paying more isn't a big deal, since pharma tirz still runs from $550 up to $1,300 monthly. For anyone mixing tirz with bac water, think about how comfortable you are with off-guidelines reconstituting an entire kit in one go, then freezing nine vials (search the topic), or repeatedly thaw and refreeze a Hospira vial after opening it. I've done both and seen no problems, though that isn't science to lean on. Still, no convincing scientific argument comes to mind for why it would be unsafe.
 
I went to my local hospital's pharmacy on the main floor and got some BAC (they'll have it) for about 3 dollars. I trust hospital BAC more.
 
Most suppliers outside Hospira still manage to get it wrong at some point, whether it's endotoxins, pH or too little benzyl alcohol. I'd maybe make BAC myself if I could find Hospira benzyl alcohol, or some other reputable benzyl alcohol for injection. Related: the PBS buffer brand on Amazon is a joke, the listing photo shows something black floating in it.
 
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