+1,000,000 for Nude Nicotine!
We've sampled VG-nic from 3 different vendors - and after trying Nude Nic, we will NEVER buy our nic anywhere else. It's virtually odorless & tasteless (meaning we can use less flavor chemicals to achieve the same 'taste' in our juices), and everything about their customer care & shipping is stellar. (We just placed a *major* order for flavors & nic - we seriously splurged on the flavors after finally getting around to testing the first three we'd ordered

)
THE most important thing is their open/full disclosure and purity. There's
no excuse for a vendor not making all test results publicly available. And I'm not talking one or two tests per year -
every batch should be properly tested and the test results made public to buyers! This is a very 'serious' chemical...and it is extracted out-of-country (then imported, mixed/sold by vendors in the USA).
http://www.e-cigarette-forum.com/forum/diy-e-liquid/462593-us-made-nicotine-base.html.
Haven't we all learned from the cigarette industry what happens if 'we the people' don't insist on 'chemically pure' AND full disclosure? If we don't start regulating ourselves, we can be assured someone else will.
Bottom line - we should all want and require (at the very minimum) the purest nicotine available - with legitimate evidence of the same. Nude Nicotine is the only vendor we know of that publishes up-to-date
proof of their purity...and we're thrilled to have found them!
From here:
https://nudenicotine.com/?page_id=11
Founded in early 2012, Nude Nicotine is an electronic eLiquid manufacturer that prides ourselves in the purity and validated contents of our nicotine liquid. Unlike any nicotine liquid manufacturer on the market, we publish chemical data on our eLiquid for the public to see. We run each lot of nicotine through HPLC or LCMS (laboratory techniques to analyze an unknown for chemical content) to ensure only the desired chemical ingredients are present, no unwanted contaminants or degradation products. No diacetlys, no beta-carbolines, no nitrosamines, never. We believe all vapers deserve the same validated chemistry and purity in an eLiquid that rivals the quality control specifications of an FDA-approved Nicotine Replacement Therapy (NRT) solution.
View our certificate of analysis here. In addition, we never dilute our eliquids with water Nude Nicotine eliquids are truly nude as they should be only containing propylene glycol (PG), vegetable glycerin (VG), (nicotine), and flavoring. No hidden ingredients.
Our nicotine base is obtained from biochemists whose products are analytically tested for content, contaminants, and overall chemical profile, while each and every other ingredient is carefully selected from US Pharmacopeia (USP) verified sources, and is subsequently tested for purity by HPLC or LCMS. In addition, each batch of Nude Nicotine eLiquid is chemically tested for nicotine content and published on our label. And we stand by these results. Guaranteed.
And the hard work pays off. Unlike other eLiquids that leave unwanted residue, appear murky, or contain unpublished ingredients, Nude Nicotine eLiquid appears pure every time, tastes true to its flavor, and comes with none of the uncertainties of an unvalidated product, guaranteed. Our eLiquids are also hand prepared in beautiful Southern California by proven biotechnologists to our exact recipe, using specialized laboratory equipment and proper technique.
We even work closely with industry-leading local flavor chemists to produce the most unique and delectable flavorings available on the market. Not only are our flavor chemicals hand-selected for purity and solubility, we pride ourselves in the careful formulation of only the best tobacco, fruit, and menthol extracts. And each one is specifically formulated for use in an electronic cigarette use, giving our flavoring base a leap in quality over others....