In the case of particle size measurements, samples were diluted in ultrapure 0.45 µm filtered water in order to obtain an average count rate below 150 kcps to avoid multiple scattering. Measurements were performed at 25 °C allowing the sample to equilibrate for 1 min and acquiring six measurements of 60 s each for each sample. The average size and PDI were expressed as mean and standard deviation of the measures obtained for three different batches.