http://www.greensmoke.com/catalog/images/cert/ce_cart_cert.pdf This is the issue with unregulated products and internet advertising claims, can be what you want them to be. The cartridges are being certified in CHINA.
Look, they may be contaminant free, they may be exactly the dosage they say, or maybe not. So while I think the idea is great, like others we have yet to find one that is batch tested for purity and conformity to the amount of nicotine. And OCF would love to find one that is because the tobacco problem in the US is not going away and this kind of product would certainly help.