2.3.1. Conductivity measurements
The emulsion was verified by using a conductivity meter (Shoot Lab 970, SI Analytics GMbH, Germany) to measure the conductivity of the emulsion. High conductivity values indicate that water is the continuous phase and oil is the dispersed phase in a O/W emulsion while for a W/O emulsion, the conductivity values will be low (Thakur et al., 2008).