Abstract: A pipette and a process for producing a pipette (10) with a capacity of from 1 to 50 ml from a thermoplastic polymer. An essentially cylindrical pipette shaft (12) with an internal diameter (di) and an essentially cylindrical cup-shaped pipette reservoir (16) with an internal diameter (Di) are produced in an injection molding process. The pipette shaft (12) has, at one end, a pipette tip (14) which narrows to a suction/exit orifice (20), and, at the other end, a conical widening (18). The pipette reservoir (16) has a suction nozzle (24) abutting coaxially from the bottom of the pipette reservoir (16). The conical widening (18) is welded or adhesive-bonded at the end and coaxially to the pipette reservoir (16). The ratio of the total pipette length (L) to the arithmetic mean of the internal diameters (di and Di) of the pipette shaft (12) and of the pipette reservoir (16) is at least 15. The pipette may have a suction nozzle (24) with a retainer, such as a radially inward jutting rib (34) for a cotton wool bud.

Abstract: The invention relates to a process for producing a pipette (10) with a capacity of from 1 to 50 ml from a thermoplastic polymer. An essentially cylindrical pipette shaft (12) with an internal diameter (di) and an essentially cylindrical cup-shaped pipette reservoir (16) with an internal diameter (Di) are produced in an injection molding process. The pipette shaft (12) has, at one end, a pipette tip (14) which narrows to a suction/exit orifice (20), and, at the other end, a conical widening (18). The pipette reservoir (16) has a suction nozzle (24) abutting coaxially from the bottom of the pipette reservoir (16). The conical widening (18) is welded or adhesive-bonded at the end and coaxially to the pipette reservoir (16). The ratio of the total pipette length (L) to the arithmetic mean of the internal diameters (di and Di) of the pipette shaft (12) and of the pipette reservoir (16) is at least 15. The pipette may have a suction nozzle (24) with a clamping means for a cotton wool bud.