OT: Seabrook, did you see the recipe for Gingerbread Brulee I posted in the recipe section? It's quite good. 
I also use NOW, but mine comes in different bottling, and the back label says it is "....... USP and food grade, all natural product derived from vegetable oil." I wonder if yours is the same as mine, but they have new labeling? Here's my link: Vegetable Glycerine 100% Pure Versatile Skin Care from NOW on sale. Find information about NOW. But I'm going to do as GoodDog is doing. I'm going to order from Essential next time.
OT: Not yet, I hope I can get gingerbread flav'g from PA, as I have to get some Bav. Crm, and Elf's got my curiosity up w/his Red Hot Cinn. recipe, so I've got to order some EM. I'll check it out. I'm vaping PB Cup as I type.
***Edit: I'm going to add Koolada too.
You can "get away" with claiming glycerine is 100% because there IS NO LAW stating you can't. Glycerine is an artificial compound, it does not occur in nature. It is synthesized from any of a variety of sources. ONLY USP glycerine is bound by law to be what it claims to be. Not saying that a rabbi or food-conscious person DIDN'T hold their company to a higher standard, only that they aren't REQUIRED to do so.
Good that they test it for USP grade quality, but I don't understand why they don't use the USP monograph then.
What? USP testing ignores H2O when testing for their monograph, if you misunderstood that sentence.
Nothing is going to be literally 100% pure, molecule by molecule, in every bottle made, and any claim by any company on just about any product that says 100% Pure Chemical X is simply a marketing tactic where they round up. I can accept 99.9% claims, or do they make it entirely in a vacuum and then vacuum seal the bottle with no air in it?
I never said I'd use Humco or anything 'USP Glycerin' over a vegetable-based source - if it came down to Humco and NOW I'd use the NOW brand. However, when there's USP + Kosher + Vegetable-source Glycerin out there cheaper than the NOW, I'll use that.
I bought the walmart Humco amd I don't think it is Vegetable based, USP or not. I never even opened it. Went with a 'Vegetable Gycerin' instead and it's fine. (wow Brand)
Negatory: Glycerine is created using Transestrifacation or other extraction methods, from 'natural' fats, be it vegitable or animal fats. PG is in fact synthisized. Maybe you are confused between the two.
It could be that they have not spent the extra cash that the FDA strongarms from companies for their FDA zertifacation. If you are reall concerned w/ FDA cert., why would you even bother vaping? It isn't FDA certified.
That's interesting Zelphie, I wonder why Humco is more often problematic for vaping if it's also vegetable based. It doesn't really matter what vegetable it's from, the process of refining it is the same.
I don't know what you're getting at LowThudd, usually you have a point somewhere and don't make logical fallacies, but this isn't even the Outside forum so I'm lost. A USP certification likely does not cost much other than the price of testing or it would counteract the point of getting it in the first place which is quality assurance being worth it for customers. If they are already spending the money on doing the same testing the FDA mandates it would probably be a drop in the bucket relatively. The point is that it's the only real way for a customer to know they aren't buying something that is not always as pure as they claim. They can test one batch and show the results as 99.9% Glycerin but for USP they have to test every batch to keep the label. I don't have to like the FDA to know its purpose, and just because e-liquid isn't FDA certified doesn't mean I don't want my ingredients to be as safe as possible.
WHAT DOES USP MEAN?
The abbreviation USP stands for United States Pharmacopeia, a document first published in 1820 by the Medical Society of New York State. Recognized as official by Congress in 1848, this document was used as a standard reference by physicians for prescribing medicines. Today, the USP includes chemical descriptions, identifying tests, and purity tests, primarily for active ingredients. All materials listed in the USP are considered drugs by law and subject to all the U.S. Food & Drug Administration requirements pertaining to drugs. Labeling a product or a substance as USP implies that it conforms to all the legal requirements of the FDA and that it was produced in accordance with the principles outlined in FDA’s Good Manufacturing Practices (GMP). A new edition of the USP is published every five years in the years ending in "0" and "5," with ongoing revisions and additions issued during the interim years.
Negatory: Glycerine is created using Transestrifacation or other extraction methods, from 'natural' fats, be it vegitable or animal fats. PG is in fact synthisized. Maybe you are confused between the two.
This is the best description I could find of USP requirements:
In fact, as you say, they could have aproved one batch and made the rest bunk. Quite frnkely, maybe I am lame or something, but I would rather trust my local Whole Foods for quality products than the FDA. Also, I trust my taste buds. The 'Now' brand glycerin has almost no taste, the humco definately has a chemical taste. Ingest what you want, but do you actually expect me to distrust my taste buds?!? Humco(walmart) glycerin has a nasty taste in comparison to 'Now' brand. There must be a reason for that.
I don't think the recipe will work as well with PA's Gingerbread. Capella's is MUCH better from what I've read. If you read TV's threads you'll see what people think of his Gingerbread once he changed from Capella to PA because its cheaper... not good reviews.
Well, the 'Now' company is a very prominent dietary suppliment company. And I do trust when they say it is 100% PURE Vegitable Glycerin. They do have areputation to maintain, and they are calling it Food Grade. I will continue to use it, even though it is not USP grade. It plain taste cleaner. Just slightly sweet and that is all. NOW Foods - Vegetable Glycerine - 16 oz.
Now, they do carry a Dry form of Glycerin(also 100% pure) that is in fact USP grade. NOW Foods - Glycine Free Form Vegetarian - 1 lb. They call it free form glycerin. Not sure if it can be liquified w/ water or not though. I am curious, maybe our local Pharmacist can chime in.
LowThudd, It is USP grade. I know this because I'm sitting here with it in my hand reading the label of my new bottle of VG from NOW. Are you sure yours doesn't say it on the back left-side of the label. Perhaps they have been asked so many times that they now have new labeling that says USP grade on it, and that's the one I have. I may be wrong, but it seems to me a company can't say their product is USP grade if it isn't. Seems like they would be sued. And you're right, NOW is a very reputable supplement co.
Waiting on my order of NOW Glycerin see if it helps cause the Walmart brand is leaving a residual coating in my mouth that I dont like.