3.2. Droplet Size Distributions
Results obtained from the analysis of the microscope photographs are presented in Figures 5 and 6. The mean diameter of the emulsion from samples is shown against the GMS concentration for the two emulsion types. In accordance with stability results from volumetric meas- urements the following are concluded: 1) droplet size decreases as GMS concentration increases and also as emulsions are enriched with herbal extracts. One would expect that droplet sizes would be smaller for emulsions made up with 6 g GMS instead of 3 and 4 g. Although data points for the two emulsion compositions are close enough and can be considered comparable given the sta- tistical lack of confidence (at a 95% level), on the other hand; 2) different herb components may affect the total results. In terms of droplet size Calendula officinalis’ emulsions present better stability (smaller droplets) than those of Rosmarinus officinalis’ emulsions. In accor- dance with creaming index results Calendula officinalis emulsions are more stable.