| 摘要 |
Device for sucking up and releasing a liquid drop by drop, comprising a first capillary space (2) with at least one inlet aperture (2'), connected to at least a second capillary space (3) having at least one outlet aperture (3'), the first capillary space being formed in such a way that when the inlet aperture (2') is dipped in the liquid a certain minimum quantity of the liquid can be sucked up into said space, and the second capillary space (3) is formed in such a way that a quantity of the liquid in question can be retained in said second space through the capillary forces, the latter quantity being smaller than the first-mentioned minimum quantity, while the outlet aperature (3') is designed in such a way that the quantity of liquid which is the difference between the first and second quantity can flow out of the second capillary space essentially in drop form. |
