There is provided a storage management system capable of utilizing division management with enhanced flexibility and of enhancing security of the entire system, by providing functions by program products in each division unit of a storage subsystem. The liquid dispensing apparatus includes: sample dispensing arm 5 which comprises a dispensing nozzle 54b for aspirating and discharging sample on which a pipette tip 200 is attached; tip separating section 140 for separating the pipette tip 200 from the dispensing nozzle 54b; and nozzle wiping section 16 for cleaning a tip of the dispensing nozzle 54b. Stimulation and sensing include biological, electrical, chemical or combinations thereof. A contact carrier having a number of contact elements, which are isolated from one another and are made from a conductive and resilient material, is provided in the region of the axis of rotation, it being possible for this contact carrier to follow a pivoting movement of the moving part, while maintaining the electrical connection between the voltage source and the loads.