A rotor-stator system with which stable dispersions can be produced in one single cycle and can be flexibly adjusted to changing requirements to the composition of the dispersion. A stator for a rotor-stator system provided with a dispersion zone, wherein a rotor corresponding with the stator defines a dispersion chamber, and with an inlet for feeding a first component of a dispersion into the dispersion zone, the inside of the stator accommodating a premixing chamber outside the dispersion zone, said premixing chamber opening into the dispersion zone, and the stator having an intake for feeding an additional component of the dispersion from outside the stator into the premixing chamber, and during operation of the stator, components of the dispersion enter the premixing chamber from the dispersion zone and from the intake, are mixed in said premixing chamber and exit from said premixing chamber into the dispersion zone.
