The particle sizes of the fractions are given
as the geometrical average, for example 0.842, 0.595 and 0.387mm,
to determine the effect on extraction yield.
Particles from16 to 32 mesh were selected for the SFE assays. The
ASAE S319.3 method [23] was used to calculate the mean diameter
(dmg) of 0.716mm from the following equation