- Also known as carbon dioxide, it's the colorless, high-density gas you most likely learned about in science class. It's used extensively as a solvent in supercritical extraction of hash oil and concentrates because of the low volatility of the gas. CO2 is also added to the air in a cannabis cultivation facility to increase yields.
What does “CO2” mean?
Example usage for CO2
“If they'd taught us about using CO2 in cannabis extraction, I'd definitely have paid more attention in Chemistry.”