We recently took two commercially available cannabis oil cartridges used to refill cannabis pens and measured the viscosity. The two main differences were the variation in THC and CBD Oils. Sample 1 had 78% THC and 0.29% CBD content. Sample 2 had 80 % THC and 0% CBD.
By using 50 μL of sample, we were able to do a full temperature sweep from 40 to 70 °C which we were able to see a significant change in viscosity as temperature went from high to low.