Really interesting, but I wonder what the rational of using two different samples is? The study does not seem to really say why they used nida samples for the js while using the stuff from the police station for the other. I read it quickly. I agree with the idea that: how can we tell when the samples tested are diffferent?



Also the j they say vents 10 ppm in the inhaled smoke and 250 ppm in the sidestream smoke from the cig, which is a huge difference. The numbers they produced are really saying the combustion puts off just as mcuh or more ammonia, but you don't get it when you take a drag because it goes in the sidestream, which is hard to believe.



What if it was a pipe? Would it still go in the sidestream? If you suck real hard on the j, do you get more ammonia than if you suck lightly? Also, they just cranked the volcano up to max and did no testing at different temps. If they did different temps, that would have told us some things.



Further, the difference between the meanie and the cano could have come from the meanie itself, not from the process, which is something they allude to but don;t really make clear (even though that would be the most obvious reason for a discrepancy).



Nonetheless, this is a great study because it's the kind of thing that is needed to make vaporiztion viable over the long term. Can't improve the process until you know what to improve. And the fact that they are targeting ammonia as a potential issue looks valid, but there is a lot there that suggests the ammonia is not that much (even though there is also a lot there that says it is too much) and that if the temperture is higher there is more ammonia, and combustion actually puts off more ammonia, it's just that somehow it all goes in the sidestream.



Finally, who ever heard of a Meanie? They say that is a commonly available commercial unit, which I do not think is true. The Volcano was less than the Meanie, but in the synpsis they just say that vaporizers approached 200 ppm (which is too high) when in fact the meanie approached 200, and the volcano was 70 ppm at it's highest temperature.



Noted in the study I think was that the "occupational standard" in England was a max of 25 ppm amonia.