Umm, no. USP is an organization.
U.S. Pharmacopeial Convention
USP is not a grade. The 'P' does not stand for pharmaceutical, actually this is a play on words by those trying to hide the facts because they don't actually put the whole word, pharmacopeial which is not a grade and is in fact the name of an organization.
Post a link to the facts, or do you all of you just go around repeating what Bubba told you at the bar.
Pharmaceutical Grade PG
So...where do you buy your pg? Cant purchase from that site even in the find a distributor link(dead link). So where do you get your "USP pharma grade pg" from?
And who do you think gives it the grade?