MAPS/NORML Studies


Study Shows Vaporizers Reduce Toxins in Marijuana Smoke


(maps.Vol.11 spring20

"...The vaporizer produced THC at a temperature of 200 C. (392 F.) while completely eliminating three measured toxins - benzene, a known carcinogen, plus toluene and naphthalene. Temperatures of around 200 C. appear to be most efficient for vaporization.





The potency of the cannabis in the study was on the order of 10% - 12%. Significant amounts of THC (around 5%-6%) begin to be released at 180 C., with slightly more (7% or 8%) at 200 C.
Carbon monoxide and smoke tars were both qualitatively reduced by the vaporizer..."