Abstract: A consumable cartridge for a particle sorter system, the consumable cartridge comprising: an inlet for receiving a particle-containing fluid; a microfluidic chip comprising: an input channel in fluidic connection with the inlet; and a particle sorter junction in fluidic connection with the input channel and comprising an output positive channel and an output negative channel; and first and second outlets in fluidic connection with the output positive channel and the output negative channel respectively, for discharging the fluid from the consumable cartridge, such that at least one enclosed fluidic path is provided in the consumable cartridge between the inlet and the first and second outlets.