| 摘要 |
The invention relates to a manually actuated sampling pipette, comprising a piston designed to undergo a dispensing movement during which first elastic return means are loaded, followed by a purge movement during which second elastic return means are loaded, and comprising an electronic device (40) that will receive a switching signal notifying passage of the piston through a predetermined position along its dispensing distance or its purge distance, position in which the elastic means have a predetermined deformation. The pipette also includes a switch (32) that outputs the signal to the electronic device. Furthermore, an elastic support (30) is capable of deforming under the effect of the axial pressure applied by the operator, and the pipette is designed such that deformation of the support, generating switching, is caused when the intensity of the axial pressure is greater than the intensity bringing the elastic means to their predetermined strain level. |
