The effects of solvent properties and solution ionic strength on the stability of colloidal liquid aphrons (CLAs) were investigated experimentally by conductance measurement

and a stability model was proposed.The obtained electrical conductivity (kt) vs time curve showed three different regions (a

b and c).According to the variation of slope of the incremental ratio of specific conductivity (kr) vs time curves and the time taken by region a

the effects of solvent properties and solution ionic strength on the stability of CLAs were analyzed.From the kinetic analysis of region b in which electrical conductivity changed drastically

the stability model of dispersed CLAs was proposed in view of destabilizing factors of CLAs systems

such as buoyant rise

flocculation

coalescence and demulsification of the dispersed CLAs.The agreement of model prediction with experimental data was satisfactory.