For CBD, I run first pass at 145C, when the pressure are around 100-200 pascal (0.75 -1.5 torr)
Vacuum level is not good since we are removing ethanol and terpene from our crude oil at this pass.
This is only for stainless steel wipe film distillation unit. What unit do you got? temperature vary a lot based on model.
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We run 155-160 on first pass. What temp do you use for second pass on cbd?
depend on your vacuum level, 155-160 could be high for first pass if you got a good vacuum.
Evaporation temperature will change depend on vacuum level. If you can get 0.1 mbar, for vacuum, you can distillate at 155 easily.
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Nah 160C or so at 260-350 microns for first pass