Pipetting head having at least one pipette tip for a pipetting device, comprising: - a carrier, – at least one projection held on the carrier and on which pipette tips are to be clamped, and – two elastomer O-rings held on the projection, – wherein the two O-rings, the projection and the pipette tip are designed to securely clamp the pipette tip solely by deformation of the two O-rings on the projection, this being brought about by pressing the pipette tip onto the two O-rings.
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