DISPENSING DEVICE

摘要

Dead volume of a liquid sample is reduced. A main channel (3) having one end connected with a sample inlet (13) and the other end connected with a sample discharge outlet (15), and a plurality of branch channels (5) connected with the main channel (3) are provided. End portions of the plurality of branch channels (5) on the side opposite to the main channel (3) are connected with different liquid reservoirs (7). Between the branch channels (5, 5) of the main channel (3) and between the branch channel (5) and the sample discharge outlet (15), high inflow pressure withstanding sections (17) where the contact angle of liquid sample for the inner wall of the channel is 90° or above and the inflow withstanding pressure is higher as compared with the branch channel (5) are provided. The liquid sample introduced from the sample inlet (13) to the main channel (3) reaches the branch of the first branch channel (5) and the main channel (3). Since the high inflow pressure withstanding section (17) is provided in the main channel (3) between the first and next branches, the liquid sample flows into the first branch channel (5) and the liquid reservoir (7). When the first branch channel (5) and the liquid reservoir (7) are filled with the liquid sample, the liquid sample is led to the branch of the next branch channel and the main channel through the high inflow pressure withstanding section (17).