1 H NMR spectroscopy of ∆ 9 -THC in condensates indicates that an overall formation of ∆ 9 -THC does not occur in commercial CBD liquids. These findings are consistent with previous findings from Kintz . Further analytical measurements using more sensitive LC-MS/MS have confirmed, that no formation of ∆ 9 -THC after heating occurred. Note that a decrease in CBD concentrations in condensates has not been observed in any measured sample using NMR, therefore also confirming, that thermic conversion of CBD to ∆ 9 -THC did not occur.