A procedure based upon image analysis has been adopted to study the influence of several physical parameters on bubble size in foam. A procedure has been described to account for the distribution of bubble size. Foam was generated in a rotor-stator mixer. In the present research, the nature of the surfactant, liquid viscosity, solid phase content, and rotational speed of the mixer were varied. All parameters were found to influence the bubble size and its distribution to a certain extent. These effects were qualified experimentally.