We never say one solvent is better than the other. The better question is: what are you trying to produce? Always start with the end-product and work your way back from there.
CO2 extraction utilizes specialized equipment; cooling or heating the carbon dioxide and subjecting it to very high pressures so that it changes phases from a gas into either a liquid or a supercritical fluid. The fluid passes through a chamber that contains raw hemp or cannabis, dissolving the cannabinoids.
The supercritical CO2 process leaves behind a substance the consistency of peanut butter that contains lipids, and other large molecules, in conjunction with the cannabinoids. A winterization process removes these impurities, resulting in a very high-quality crude cannabinoid oil.
One extraction method is not necessarily better than the other. Again, it all depends on your end-product. Both have their advantages and disadvantages, and the method right for you and your lab will be most accurately determined by what you’re trying to produce. Products made using either extraction method can be made safely and produce high-quality products.
Learn more about other equipment that you may need for your ethanol extraction lab.