opinions about BAC Water from Chinese vendors?

[timewalk]

for those who can't easily source "known good" Bacteriostatic water like Hospira, do you think those sold by Chinese vendors are acceptable?

 

[scarywood75]

for those who can't easily source "known good" Bacteriostatic water like Hospira, do you think those sold by Chinese vendors acceptable?

Yes, I think it's still better than tap water. Is it good? Probably not. Do you risk anything using it? Probably not either.

 

[hexagonal]

I have some Hospira on the way from Medex, I didn't include any license details or anything and they eventually shipped.

But I don't know why we would trust them to make significantly more complex peptides if we can't trust them to add benzyl alcohol to sterile water.

 

[scarywood75]

I have some Hospira on the way from Medex, I didn't include any license details or anything and they eventually shipped.

But I don't know why we would trust them to make significantly more complex peptides if we can't trust them to add benzyl alcohol to sterile water.

While most vendors don't synthesize the peptides themselves, they do add filler and lyophilization, which is more complex than mixing water and benzyl together.

The water used when mixing the peptide with the filler is most likely the same used to make BAC

 

[scarywood75]

Only issue I see is with the pH

 

[stickfigure]

While most vendors don't synthesize the peptides themselves, they do add filler and lyophilization, which is more complex than mixing water and benzyl together.

The water used when mixing the peptide with the filler is most likely the same used to make BAC

They probably don't use benzyl alcohol when mixing peptides with fillers. No reason to do that and at 205 C boiling temperature at atmospheric pressure it makes it really difficult to boil out without damaging peptides.

 

[scarywood75]

The probably don't use benzyl alcohol when mixing peptides with fillers. No reason to do that and at 205 C boiling temperature at atmospheric pressure it makes it really difficult to boil out without damaging peptides.

What, I've never said they were using benzyl in peptide, I was just comparing the process of making both

 

[hexagonal]

While most vendors don't synthesize the peptides themselves, they do add filler and lyophilization, which is more complex than mixing water and benzyl together.

The water used when mixing the peptide with the filler is most likely the same used to make BAC

Fair enough! My general point is just that we're relying on them to already do things significantly more complex than making BAC water, so being particularly mistrustful of it seems like misplaced worry

 

[timewalk]

But I don't know why we would trust them to make significantly more complex peptides if we can't trust them to add benzyl alcohol to sterile water.

yes, but it's also unlikely that you're going to send something like this for testing (for price reasons, chiefly). what's more, the kind of people who do send things for testing and can hurt the vendor's reputation, probably won't be buying Chinese BAC water in the first place

and I expect vendors know this, and so are more likely to cut corners.

 

[hexagonal]

yes, but it's also unlikely that you're going to send something like this for testing (for price reasons, chiefly). and I expect vendors know this, and so are more likely to cut corners.

There's not many corners to cut when it comes to making BAC water. They already need sterile water for other portions of the process, and adding benzyl alcohol is trivial.

 

[aloil]

Fair enough! My general point is just that we're relying on them to already do things significantly more complex than making BAC water, so being particularly mistrustful of it seems like misplaced worry

I've been wondering about this too. I can't imagine any vendor wants to get a reputation for causing skin infections, and with something so simple I'd think that would be enough motive not to mess it up. It might be worth testing at least a random batch periodically.