| 摘要 |
An apparatus for metering liquids into ungraduated dosage vessels (2) having bottom and side walls defining an upper mouth, at least a portion of one side wall being substantially vertical, transparent and arranged for coaction with a graduated scale (3), placed outside said portion, said scale (3) being separated from the outside of the vessel portion by an air gap, whereby light rays (5) from the scale graduations (3) pass through the interface at the inner surface of the vessel (2) wail when it is empty, so that the graduations (3) are visible from the mouth of the vessel, whereas said rays are totally internally reflected (6) when the vessel is filled with liquid (4) above the graduation mark in question, since the liquid has a greater refraction index than air, the graduation mark (3) thus being no longer visible from the mouth of the vessel (2). Metering is facilitated by the possibility of reading off the volume graduation scale (3) from above while the liquid is being poured into the vessel (2) and the apparatus is supported by a horizontal substructure such as a table. Metering can be executed for a large number of ungraduated dosage vessels (3) using one and the same means (1) provided a graduation scale (3). The apparatus is particularly suitable for doses of medicine. |
