Patent ID: 8113067

Claim:
A method for producing a pipette with a capacity of from 1 to 50 ml from a thermoplastic plastic, comprising a substantially cylindrical pipette shaft with an internal diameter (d i ), which at one end is connected to a pipette tip tapering to a suction/discharge opening and at the other end to a conical widening, and a pipette reservoir of substantially cylindrical-cup-shaped configuration with an internal diameter (D i ) corresponding to the widening, which pipette reservoir has a suction nozzle projecting coaxially with respect to a central longitudinal axis of the substantially cylindrical pipette shaft from a cap at a top of the pipette reservoir, are produced by injection molding, and the conical widening is welded or bonded, on an end face opposite to the end of the conical widening connected to the substantially cylindrical pipette shaft and coaxially, to the pipette reservoir, the ratio of the total pipette length (L) to the arithmetic mean of the internal diameters (d i and D i ) of the pipette shaft and of the pipette reservoir amounting to at least 15.