I built a small extraction chamber for processing materials with supercritical CO2. Please refer to my previous videos for more information about supercritical co2: http://www.youtube.com/watch?v=-gCTKteN5Y4 http://www.youtube.com/watch?v=TvmM6qa2a90 PDF discussing vanilla extraction with SC CO2: http://www.redalyc.org/pdf/482/48221175004.pdf