![]() ![]() It apparently pays to smoke that last bit. Take the glass blunt and remove the spiral from it. We did note that there was still some unburnt plant material left in the ash sample, so that may account for the relatively high amounts of THC still present in the ash. The goal with the blunt is to have small weed crystals, not powder and leftovers. As expected, much of the THCA was converted to Delta-9 THC, though not all. The results below show the before and after cannabinoid content of the samples. It was surprisingly close to the upper end of our friendly bet. When the analyzer finished both tests, we had our answer. When cannabis is smoked, it converts from the inactive THCA into active Delta-9 THC. This borosilicate glass ash catcher features a 90 degree angled joint and a percolator that is fashioned to look like a miniature beaker bong. ![]() THCA is made by the plant and is converted to Delta-9 THC through a reaction that typically involves heat. One thing we all agreed was that most of the THCA would be decarboxylated into Delta-9 THC from the heat of the flame. ![]() Values ranged from no THC left to about half of the starting THC content. While we were waiting for the LightLab to complete the test, we had some friendly bets about what the result would be. Next we added the sample to a vial with some LightLab solvent, shook it up and injected it into LightLab. We weighed 100mg (that’s 0.1g) of both the ash material and the original cannabis sample. Rather than make a guess, we decided to let LightLab answer the question. OctoTesting For Truth Part 5: How Much THC Is Left in Cannabis Ash? By Dylan Wilks, CTOĪt the California Cannabis Business Conference last month, we had someone approach our booth with an interesting question: If I smoke cannabis, how much THC is left in the ash? She just happened to have both the starting material as well as the leftover ash. ![]()
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