When looking at the reports from Ruyan and N-Joy, on their products fluids, even when broken down into it's finest miniscule parts, (as FDA did with N-Joy) there is a sense of purity that is better than cigarette tobacco, and at pharma grade in the nitrocyamines(and I know I butchered the spelling there) levels.
Face it . If anyone was to have a bone to pick on nicotine, it would be the FDA. They claim a level of the "nitros" (I won't bother twice) to be that of pharma grade gum and inhalers, and 100-1000 times less than the cigarette counterparts , with Marlboro hitting the top of the toxin list. Even in Marlboro that level is not scientifically proven to be of any danger...
Sorry about the sketchy facts and spellings, but I would assume many here have read these reports by Ruyan or FDA (on N-Joy). There is no comparison on the Nic level to cigs. Now I know this is only 2 companies, but if you choose a reputable company for fluids... I don't see a concern. Also Johnson Creek ran their analysis, and it's out there to peruse as well.
Also, I've never seen any evidence of Nicotine losing potency or going bad with age. Shelf life is at minimum 2 years, and it is of course wise to keep air out of the opened bottles as best possible, but no one I have ever read reports or info on, has said the air would taint nicotine before 2 years, and if stored proper, it is an unknown timeline of how long nicotine will keep. It is assumed far far longer than 2 yrs (and I've read easily 10 yrs). Since suppliers don't keep it around near that long (2 yrs), and take care on how it is stored, I again don't get the concern.
I get and appreciate the dedication to chasing these things down for our safety, and they do need looked at, but nothing I have read here or anywhere else has proven a safety issue. Especially when put up against cigarette counterparts, which in Nic levels/contaminates is also proven safe..
Careful in trying to make something out of nothing
Pig