That works out to about 20mg oleoresin per ml EtOh which is near the solubility I have seen for THC in EtOH azeotrope at cryo temperatures.
At -20 F freezer temperatures the solubility goes up a lot.
I’m getting good recovery from 100 grams of biomass with 2.5-3 liters of EtOH in three extractions with the third having a chromatographic top layer.
That works out to a little over 3 gallons per pound of biomass if I haven’t sampled too much product.
I could probably back off to two extraction cycles with only about a 5% loss but I get what I pay for.
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