The first observation about different types of milling is that the ratio of decarboxylation does not differ significantly between milling instruments and milling protocols. Figure shows the decarboxylation ratio of THC to THCA for high THCA flower. The decarboxylation ratio sits between 0.08 and 0.1 for all replicates of milling instruments and protocols. Although higher, the decarboxylation ratio of CBDA rich flower does show a comparable number of around 0.26 (figure ). The measurements of THCA, THC, CBDA and CBD concentration in THCA and CBDA flower, respectively, are shown in figures 3. Table shows average values for cannabinoid concentrations, arranged by mill type.