The project compared the droplet spectrum (by volume) emitted by a RAD aerial rotary atomiser mounted on a standard bracket, a RAD atomiser mounted on a extra long (XL) bracket and a Micronair AU5OOO nozzle mounted in a high velocity airstream. The influence of air speed and liquid flowrate on the droplet spectrum (by volume) emitted by a RAD aerial rotary atomiser with extra long (XL) bracket mounted in a high velocity airstream was also determined.