The characterization of suspension/emulsion sprays plays a decisive role in many industrial processes. A good example of such a process is the drying of a milk spray to produce milk powder, where the process efficiency and product quality is typically controlled by atomization parameters like flow rate, pressure, etc.. However these parameters influence directly the droplet size and droplet velocity distributions in a spray so that optimizing a spray drying process often involves adjusting the spray to a desired droplet size and droplet velocity distribution. This requires a measurement technique capable of characterizing in real time the droplets in a suspension/ emulsion spray. To achieve this aim we present developments to the well-known time-shift technique for spray measurements [1][2][3][4]. This technique is based on the light scattering of a single droplet/particle from a shaped light beam and can be operated in backscatter, meaning that the detectors and light sources can be placed on one side of the measurement position, making the technique more attractive for applications with limited optical access. Using the modified time-shift technique [3][5] the milk spray created by different nozzles operated at different pressures will be characterized using the droplet size and droplet velocity distributions of this spray. Milk is an emulsion which contains water and fat particles. So in addition we will investigate, how the fat content in milk, and with it the viscosity and surface tension, influences the droplet size and droplet velocity distribution, depending for instance on nozzle type and pressure. Moreover the time-shift technique is a counting measurement technique like phase Doppler [2]; consequently the correlation between velocity and size of the droplets is available.