Metrolab Blog

Solvent extraction of cannabinoids according to the Randall method

Cannabis sativa has a long history as a medicinal plant, likely dating back more than two millennia. The renewed interest in the therapeutic effects of cannabis emanates from the movement that began 20 years ago to make cannabinoids extracts available as a medicine to patients with a variety of conditions. For example, the most common conditions for which medical cannabis is used in Colorado and Oregon are pain, spasticity associated with multiple sclerosis, nausea, post-traumatic stress disorder, cancer, epilepsy, cachexia, glaucoma, HIV/AIDS, and degenerative neurological conditions.
THC and CBD are the two most common cannabinoids. It’s important for consumers to know THC and CBD levels because these will have a strong influence on the effects of the product. For example, some medical patients may want a strain with a high CBD:THC ratio, while adult-use consumers may request the opposite. Other compounds, such as minor cannabinoids and terpenes, can be tested for as well, although these measurements are typically not required by law.

The SER 158 is here used for the extraction of THC and CBD before proceed with further analysis. The extracted cannabinoids have a strong influence on the effects of the product.