The aim of the presented thesis is to experimentally study the formation of flocs in Fluid Dynamics in controlled conditions in order to be able to deduce some relations between the flow rate, dimension, shape and other conditions in the process of floc formation. This experimental study can be structured in two general blocks, the first part of the thesis consists in developing an experiment in which the flocs can be formed and subsequently placed in a proper device where can be observed and studied. The experiment is intended to be normalized and under certain controlled conditions in order to guarantee the repeatability and reproducibility of the results to extrapolate the results e.g. in industrial applications. The experiment must also be robust because the precision of the equipment is not very exact and for example the temperature of the fluid cannot be controlled strictly. Nevertheless these factors will not be taken into account in the final conclusions of the study. The assembly of the experiment will be explained in detail as also all the equipment used to make possible this study. The other part of the thesis contains all the results that have been obtained from the experiment as so the deductions obtained from the experimental study. It is intended to achieve some necessary conditions for the formation of the flocs in order to be able to control the appearance of them as so the most influential properties. With this knowledge it will be able to control the appearance of flocs in certain industries so they can improve the quality of their products.