There is a lot of confusion in the industry on whether or not you should be looking at Delta 9 THC or Total THC for legal compliance.
The 2018 Farm Bill specifically states that hemp is classified as Cannabis Sativa L. (and its derivatives) that is under 0.3% Delta 9 THC. Regarding possession and transport, this is the only THC level that matters for compliance.
The confusion over Total THC usually surrounds the word “postdecarboxylation” or the USDA IFR. While we could get into the weeds on the both issues, it is important to note that they both deal with cultivation and not possession.
That said, there is a lot of confusion about this, even by some of the State’s themselves, and while it goes against Federal Law, some States have attempted to limit the possession of hemp flower, or have restricted hemp flower to only be legal if it is under 0.3% Total THC.
It is up to you to know your local laws and purchase material that is legal. If you have further questions about this, please consult your attorney.