PURPOSE: To remove liquid drops attached to a capillary tube by providing relative mobility up and down and to the left and right between the bottom of capillary tube and a supply liquid vessel, separating the bottom from the liquid surface, moving it to near the mouth of the vessel while in contact with the inner wall of the vessel, restituting the horizontal position, and drawing out from the vessel mouth using a proprietary mechanism.

CONSTITUTION: When a vessel 7 is sunk and the bottom of a capillary tube 4 is separated from the liquid surface, liquid drops remain attaching to the bottom, and a horizontal movement of the vessel 7 pushes and bends the capillary tube 4 by the edge of the mouth of the vessel on the way of tubing, and thus the bottom of the tube 4 comes in contact with the inner wall of the vessel 7. When the vessel 7 is sunk, the liquid drops at the tube bottom shift to the inner wall of the vessel 7 and flow down to be removed from the tube bottom. Then the vessel 7 is moved horizontally and restituted to the original position, and a further sink causes the tube bottom to emerge from the mouth of the vessel 7.