| 摘要 |
<p>Troublesome evaporative effects occur in a solution decanted in microchambers when chemical substances are pipetted into individual microchambers in an array (4) thereof. In order to prevent such undesirable evaporative effects, the inventive pipette device for automatic pipetting of chemical substances is provided with at least one holder (3) receiving a microchamber array and the moveably arranged head of the pipette (11) is embodied in such a way that it is secured to a plate (7) with the aid of a holding device which follows the movements of the pipette head (11) during the pipetting process. The plate (7) forms an enclosed gas chamber (14) above the microchamber array (4) in conjunction with a frame (5) which surrounds the microchamber array (4) in a tight manner. The pipette head juts out into the gas chamber via an appropriate opening (13) in the plate (7).</p> |
