Duke. I am in Eugene, Oregon USA and have some info that may be helpful. We are using short path distillation techniques combine with molecular fractioning techniques and of course a rotoVAP unit. THCV (Tetrahydrocannabivarin) Boiling point = <220*C/428*F .Hope this helps. Any further ???'s contact me (Brett Barkley) directly at kindfamilyfarms at g mail
