Injector for injecting a fluidic sample into a flow path between a fluid drive and a separation unit of a sample separation apparatus, wherein the injector comprises: a sample accommodation volume for accommodating the fluidic sample prior to injecting; a sample drive configured for intaking the fluidic sample into the sample accommodation volume; and a fluidic valve switchable between multiple switching states, including a plurality of injection switching states of the fluidic valve to thereby selectively couple the sample accommodation volume with the flow path and at least one state of the fluidic valve to decouple the sample accommodation volume from the flow path, wherein the fluidic valve is a rotatable fluidic valve having a rotor and a stator being rotatable relative to one another so as to bring different fluid ports of the stator in alignment with at least one respective fluidic conduit in the rotor, the fluidic conduit in the rotor being selectively fluidically coupled with or decoupled from the stator ports and/or stator conduit(s) by rotating the rotor relative to the stator, the plurality of injection switching states includes a state, in which the fluid drive, the separation unit and the sample drive are fluidically coupled by the fluidic valve so that fluid driven by the sample drive and flowing from the sample accommodation volume to the separation unit and further fluid driven by the fluid drive and flowing from the fluid drive to the separation unit are combined at a fluidic connection upstream of the separation unit; the plurality of injection switching states further including another state, in which the fluidic sample is injected towards the separation unit driven by the fluid drive while the sample accommodation volume is located downstream of the fluid drive and upstream of the separation unit. a sample accommodation volume for accommodating the fluidic sample prior to injecting; a sample drive configured for intaking the fluidic sample into the sample accommodation volume; and a fluidic valve switchable between multiple switching states, including a plurality of injection switching states of the fluidic valve to thereby selectively couple the sample accommodation volume with the flow path and at least one state of the fluidic valve to decouple the sample accommodation volume from the flow path, wherein the fluidic valve is a rotatable fluidic valve having a rotor and a stator being rotatable relative to one another so as to bring different fluid ports of the stator in alignment with at least one respective fluidic conduit in the rotor, the fluidic conduit in the rotor being selectively fluidically coupled with or decoupled from the stator ports and/or stator conduit(s) by rotating the rotor relative to the stator, the plurality of injection switching states includes a state, in which the fluid drive, the separation unit and the sample drive are fluidically coupled by the fluidic valve so that fluid driven by the sample drive and flowing from the sample accommodation volume to the separation unit and further fluid driven by the fluid drive and flowing from the fluid drive to the separation unit are combined at a fluidic connection upstream of the separation unit; the plurality of injection switching states further including another state, in which the fluidic sample is injected towards the separation unit driven by the fluid drive while the sample accommodation volume is located downstream of the fluid drive and upstream of the separation unit.