After the industrial hemp samples are dried, crushed, ground and sieved, they are extracted with 95% ethanol solution, filtered by microporous membrane, separated by reversed-phase chromatography, detected by ultraviolet detector, and quantified by the external standard method.
T/CAIA SH016-2021 history
2021T/CAIA SH016-2021 Industrial hemp - determination of cannabidiol and cannabinolic acid - high performance liquid chromatography