Drainage and stability of thin aqueous froth foam films from aqueous solutions of non-ionic flotation frothers (polyoxyethylene- and polyoxy-propylene-alkylethers) in the presence of xanthate flotation collector were studied. It was shown that the drainage pattern and the stability of the films produced from the different surfactants were comparable. Also the films were shown to be stabilized after initial drainage by electrostatic repulsion forces generated at the air/solution interface. The film charge could be modified by changes in concentration of frother and xanthate. Increasing concentration of xanthate decreased the cohesion in the surface layers and hence the froth stability.