Nowadays, when Romania is a full member of the European Community, it is necessary to implement a system for testing and diagnose the spraying machines. In order to do this, there are special equipments that can tell to operator what is fault in a spraying machine. The parameters that the test stand can measure are: distribution uniformity which is tested for the whole width of the machine; the nozzle flow and all the correlations between the nozzles; the pump nominal pressure and flow. Using this state of the art equipment was possible to study the uniformity distribution for EEP-600 mounted sprayer, equipped with IDK 120-02 nozzle, for different working pressures and boom heights.