| 摘要 |
<p>A pipet device (A), comprising a pipet nozzle (1) having an internal passage (10) formed therein and a hollow pipet tip (4) detachably installed on the nozzle (1), wherein the tip (4) is displaceable relative to the nozzle (1) between a normal fixed position and a completely separated position, an external air take-in groove (16) is formed in the nozzle (1), and the take-in groove (16) is closed by the tip (4) when the tip (4) is positioned at the normal fixed position and exposed by the tip (4) when the tip (4) is displaced from the normal fixed position to the completely separated position.</p> |
