2.5.1 Light microscopy
The emulsion microstructure was captured after seven days of storage. A drop of the emulsion was placed over a glass depression microscope slide with 1 – 1.2 mm thickness (VWR, Edmonton, AB, Canada) and covered with a coverslip (VWR, Edmonton, AB, Canada). A light microscope (Eclipse E400, Nikon Mississauga, ON, Canada) was used to observe the emulsion samples using a 10x and 100x objective lens.