For the scaling-up achieved by the use of the method of wet microwave granu
lation based on calculations, there is a need for an exact mathematical des
cription for the relationship between the dose of radiation and the resulta
nt effect. By assessing the physical, physical-chemical, and chemical facto
rs, we may conclude that, by the gross kinetic evaluation of the change in
the enthalpy and the loss of humidity, there is a possible solution for the
mathematical description of the single-step, single-pot granulation from t
he practical aspect of finding ways to scale-up. This paper overviews the e
xperiments performed in a laboratory-size microwave vacuum granulator in te
sting two different granules with respect to composition and permittivity a
nd presents the evaluation of the experimental data.