POT TV - Addison Demoura of Steep Hill Lab explains the process of testing cannabis potency using a gas chromatograph.
Filmed at the Treating Yourself Expo in Toronto on May 27, 2012.
See more articles and videos about the Treating Yourself Expo.
Filmed with a potato (Livestream).
Become a Cannabis Culture Insider
The best of Cannabis Culture and Pot TV, delivered to your inbox.