Quote Originally Posted by hahaitsdoogle

Your signature is inaccurate due to the vaporizer research.
In this study the globe convection type vaporizer is used.
You're gonna have to contact MAPS/CaNORML on that one. This is the information they have on their website. This is a "new" study. Not this one.
The MAPS-NORML study provides new information on the efficiency of different devices in delivering THC from marijuana to the user. Previous studies have shown that 60% - 80% of the THC burned in joints or waterpipes is lost in slipstream smoke, adhesion to the pipestem and bowl, pyrolysis, etc. [Mario Perez-Reyes, Marijuana Smoking: Factors that Influence the Bioavailability of Tetrahydrocannabinol, in C. Nora Chiang and Richard Hawks, ed., Research Findings on Smoking of Abused Substances, NIDA Research Monograph 99, 1990].
http://www.maps.org/mmj/vaporizer.html

I'd believe them. Where's the site with your new research?