DROPimage software requires inputs of component phase
densities to calculate interfacial tension from drop shape analysis. A
Mettler-Toledo DE40 density meter (Mettler-Toledo, Columbus,
OH) equipped with a viscosity correction card was used to measure
the density of each solution at room temperature (22 2 C). The
accuracy of the instrument is 1 104 g/cm3. Each solution was
evaluated in triplicate and averaged.