There's no regulation of the e-liquid industry, so don't trust that because it's "VG" (sounds better than glycerol), it's safe.
From Wikipedia's article on glycerol:
Glycerol from triglycerides is produced on a large scale, but the crude product is of variable quality, with a low selling price of as low as 1–8 U.S. cents per pound in 2011. It can be purified, but the process is expensive. As a result, a good fraction of crude glycerol is disposed of as waste.
Or, quite possibly, sold as e-juice. If there's no regulation or incentive to purifying it, do you really think the majority of producers who are in it for the money will?
From Wikipedia's article on glycerol:
Glycerol from triglycerides is produced on a large scale, but the crude product is of variable quality, with a low selling price of as low as 1–8 U.S. cents per pound in 2011. It can be purified, but the process is expensive. As a result, a good fraction of crude glycerol is disposed of as waste.
Or, quite possibly, sold as e-juice. If there's no regulation or incentive to purifying it, do you really think the majority of producers who are in it for the money will?
