New to extracts and have questions about rotovapping. Using a 5L rotovap with 29mm Hg of vacuum, which I thought should be plenty capable to extract ethanol at lower temps, like 40C or less, but it doesn’t seem to pull off ethanol as expected, or takes hours for small batches. Experimenting with higher temps, like 55-65C, and mixture will boil, but still seems little ethanol condenses off, and don’t want to degrade product. It does thicken, but even when it appears finished and nothing else comes off, I swear it still has the smell of ethanol. Even after hours of leaving it. Can rotovaps make final product or does there need to be a final finishing step?