i used to get paid by an old well known peptide co. with a very good rep to make his acetic acid mix for him, identical instructions as the home version someone used.... sterile water is basically the same as distilled water trhough a filter. very well known peptide company when it was open and great rep, he had me doing it cuz he knew i could use some extra bucks and he didnt have the time to do it. unless the stuff is coming in a pharmacuetical companies bottle and label assume they are just using a .22 filter pumping it into empty vials crimping them and occasionally throwing on the website co's label.
like i said myself and noone i knew who i ever reffered to this company had one complaint about the stability or how it worked.
I DO HOWEVER think many do not sell it because it gives the FDA extra ammo to assume it is being sold for human use. dont ask me why but the fda came after my friends company and busted his balls bigtime to the point they decidedto shut down than risk legal action, a nd he had all the same disclaimers i think they just took him uot cuz he was a more popular site, and they figure if your a researcher you can get your reconstituting solvents or should have plenty in your lab anyway perhaps, who knwos how they justify half the shit they do.