If you are referring to this study>>>>http://www.canorml.org/healthfacts/j...ingervapor.pdf

then I have two issues with it. One, is that the study is over 5 years old. But the main issue is that the study was funded by Storz & Bickel GmbH&Co., the manufacturer of the Volcano. Now that doesn't render the study useless, and I am not questioning the validity of the study, but it does make it a bit suspect.

The fact is that vaporization is a very simple process, and I have no doubt that ALL vaporizers can produce the same result, IF they all vaporize the herb at the exact same temperature, but that temp is variable on all vaporizers, even those with fixed temp settings, so.................in this aspect, saying that the Volcano is a better vaporizer due to this study is ludicrous.