The present work treats experimentally the interaction of two polydisperse hollow-cone sprays. The process, although of considerable significance for chemical industries and applications like flue gas cleaning, is not very well represented in existing literature on sprays. This may be due to difficulties in getting general results from experiments involving particular geometries like hollow-cone sprays with fixed spray angle and geometrical arrangement. The present work develops a generally applicable representation of the interacting spray flows and of the effects of spray mixing on the resulting flow. The measurement technique used is phase-Doppler anemometry (PDA) which provides information about the size and two velocity components of the drops at each measurement position in the sprays. A factorial design of the experiments enables the influence of intersection angle and liquid flowrate of the sprays on resultant characteristics like an integral mean drop size in a spray cross section to be quantified. For different values of these parameters, the downstream evolution of the interacting sprays is observed and quantified by the smoothness of average-value profiles of the drop size.