An appropriate instrumental (TurbiscanR) method to evaluate colloidal stability is that based on migration and/or interaction of particles in samples at resting conditions during storage. Light backscattered along the sample bottle from the bottom to the top is recorded in a single measurement. Changes of backscattering (ΔB) are associated to changes in the particle dispersion homogeneity, particle size and concentration, and thus the stability of the sample (Durand, Franks, &
Hosken, 2003). ΔB indicates variation of backscattering from single measurements at different times during storage. The increase in ΔB at the bottom or at the top of the tube indicates an increase in solid