LIQUID DISPENSER PREVENTING CONTAMINATION OF THE LIQUID

摘要

PURPOSE: A liquid dispenser is provided to stably dispense a liquid without contaminating the liquid. CONSTITUTION: A liquid dispenser includes a syringe(12), a plunger(14), a pipe(18), and a liquid tank(16). The syringe has a nozzle(20) at one end thereof. The plunger is inserted into the other end of the syringe. The pipe is connected between one end of the syringe and the other end. The liquid tank is connected to the other end of the pipe. The liquid tank is arranged such that the surface of liquid in the liquid tank is higher than the syringe. The plunger is moved forward in the syringe to dispense the liquid from the nozzle. The plunger is moved backward in the syringe to provide the liquid in the liquid tank to the syringe.