Phenol vs BAC

[Labcat]

Curious if anyone uses phenol/water as their preservative to recon? It’s supposed to be a much stronger and broader spectrum agent.

Or both phenol and BAC? (I read it is how insulin, the classic peptide, goes beyond 28d)

 

[penewbie]

I don't know why we'd need a stronger and more wide spectrum bac agent.

If benzyl alcohol is good enough for pharma, it's good enough for me.

 

[Labcat]

I don't know why we'd need a stronger and more wide spectrum bac agent.

If benzyl alcohol is good enough for pharma, it's good enough for me.

That’s one way to think about it, but it’s not really true about pharma?

My vials I just got from pharma use phenol.
Mounjaro kwikpen uses both.
Zepbound has neither.

So there must be a reason, and it might make a difference depending on my situation (my usage pattern or maybe the cleanliness of the powder I get).