| 摘要 |
PROBLEM TO BE SOLVED: To obtain a volumetric stopper which accurately dispenses the contents by a constant volume and leaves less volume in the container after use, by assembling a cover suspending a partition board into a cup-shaped main body having a bowed inflow opening at the upper face and a recessed part at the side face, at the lower part of the one side. SOLUTION: When the contents are discharged by a fixed volume, the container is tilted upside down to shift the contents in the container toward the top direction of the container to guide the contents from the horizontal and bowed inflow opening 111 of the volumetric cock 10 to a waiting chamber 11. Then, when it is returned to the straight position, a part of the contents in the waiting chamber 11 is returned from the inflow opening 111 to the container and the rest thereof drops to a measuring chamber 13 through a connection hole 12. In this process, the first measuring is executed. Then, when the container is tilted upside down again, a part of the primarily measured contents is returned to the waiting chamber 11 as the excessive part by the measuring action of a tilted board 230. And the other secondarily measured contents in the measuring chamber are discharged from the discharge opening 211 to the outside of the container through the discharge hole 14. |
