Formulation scientists generate physicochemical data that are used in proce
ss modelling and in the prediction of end-product quality. In this respect,
contact angles are of particular importance as the surface energy of subst
ances influences their processability and bioavailability. Dynamic contact
angle (DCA) analysis represents a straightforward wettability assay. Now fu
lly adapted to powders, DCA analysis also proves to be more efficient than
other methods for wettabillty determination.