A capillary 1 is moved to a position above a vessel 17 having a
solution
15 stored therein. Then, the vessel 17 is raised while the inside
of a tube 5 is opened to an ambient pressure until one end 1a
of the capillary 1 is dipped into the solution 15. The solution
15 is introduced into the capillary 1 by means of capillarity. Next,
the vessel 17 is lowered, to thereby removing the end 1a of
the capillary 1 from the solution 15 stored in the vessel 17.
Subsequently, the capillary 1 is moved to a position above a vessel 19
to which the solution 15 is to be transferred. Then, the tube 5 is
connected to a pressure mechanism, thereby pressurizing the inside of the capillary
1 from another end 1b thereof. The solution 15 in the
capillary 1 is then discharged to the vessel 19.