The OCS Pellet Size and Shape Distribution System (PSSD) is an instrument used for measurement and classification of the size and shape of all type of pellets including granules and resin. The system analyses the pellets in free fall using a line scan camera and classifies pellets (over- and undersize, abrasion, agglomerates, etc.) according to their morphological properties. Further special features of the PSSD are the monitoring of the pelleting system (degree of abrasion of the cutters), the determination of the pellet weight (with optional weighing system) and the data transfer of the real-time results to the production and process control.