| 摘要 |
<p>A device for investigating biological test fluids, especially blood, urine or the like, comprises a sample application portion (6), a measuring chamber (2), and an axial slide valve element (8) which includes a dosing capillary (10). The axial slide valve element (8) can be moved from a first position in which the sample application portion (6) is in fluid communication with the dosing capillary (10), to a second position in which the dosing capillary (10) is in fluid communication with the measuring chamber (2). Checking means are provided for checking a filling of the dosing capillary (10) with test fluid in the first position of the axial slide valve element (8) and/or an emptying of the dosing capillary (10) into the measuring chamber (2) in the second position of the axial slide valve element (8). The checking means comprise a checking chamber (13) adapted to be filled with the test fluid. The checking chamber is in fluid communication with one of the end portions of the dosing capillary (10) at least in the first position of the axial slide valve element (8), and is visible through a checking opening (7) in the first position of the axial slide valve element (8).</p> |
