Selects are oils that have been extracted at lower pressures and contain only the volatile, CO2 soluble components. The heavier waxes, resins, and color compounds are left behind. The viscosity of CO2 Select is generally thick but pourable. These oils closely resemble steam distilled essential oils in composition, however, they may contain more volatile components that are not extracted during steam distillation.
Totals are oils that have been extracted at higher pressures and contain both the volatile and non-volatile CO2 soluble components of the botanical. Co2 Totals contain the essential oil of the plant plus the heavier waxes, resins and color compounds, making them very similar to the plant itself. CO2 Totals are generally thick and pasty but are soluble in essential oils and vegetable oils (although some may need gentle warming).