- huge question. answers are a moving target.
- if doing CO2 > SPD, there are no vac ovens involved. those are for shatter.
- either by crystallization, or not removed. the right genetics helps.
- not there yet. but hemp/cbd looks to be moving that way quickly.
many folks are quite proprietary about their methodology. especially for isolate (purified crystalline CBD). At a guess because they’re using variations on GW’s tek.
there are some GW pharmaceuticals patents in the data dump. have you looked around in there yet?