A breast pump device (1) is adapted to enable realization of at least two batches (A, B) of breast milk as a direct result of a single pumping session to be performed on at least one user's breast, which batches (A, B) are different as far as the value of at least one quality parameter of the breast milk is concerned. The device (1) comprises a detection unit (50) for performing real-time detection of the at least one quality parameter in a flow of breast milk and outputting a detection signal representing an actual value of the at least one quality parameter, and further comprises a controller (70) for receiving the detection signal from the detection unit (50) and using the signal in a process of determining an appropriate setting of the device (1) as far as the choice of a destination position of the milk is concerned.