Emuslion Stability and Analyses

The stability of emulsions is dependent on various parameters such as size of drops and interactions between drops. These are described in the following text. 

Emulsion drop size analyses Since stability and other characteristics (such as viscosity and appearance) are known to be related to the drop size, they need to be measured. There are commercial instruments that can be used for such analyses. These are 

Coulter counter This is the most common type where one simply counts the number of particles or drops passing through a well-defined hole. A signal is produced, which corresponds to the size of the particle. 

Light scattering Modem laser light scattering instruments are very advanced devices for particle size distribution analyses. The laser light is scattered by the small dispersed particles or drops. The latter is known to be dependent on the radius of the particle. 

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