Formaldehyde is a known degradation product of propylene glycol that reacts with propylene glycol and glycerol during vaporization to produce hemiacetals. -

See more at: http://blog.mtbakervapor.com/the-truth-beh...h.4ti0zua5.dpuf

In order to achieve the voltage necessary to reach the levels of formaldehyde discovered in this study, you would have to overheat your atomizer, burn your coils, and then vape that repeatedly to be exposed.

See more at: http://blog.mtbakervapor.com/the-truth-beh...h.4ti0zua5.dpuf

This post has been edited by warlove3: Dec 14 2015, 05:42 PM

Wait till u play TC for a few months, then u will cry like me...Hahaha
2 units of VT200 went for warranty claim due to died chip

Because of TC other than that normal wattage mode is second best for me...still the provari chip is unbeatable so far