Syringe for use with a metering device

A metering device for use with a syringe (1) having a syringe piston (2) and a syringe cylinder (3) for metering liquids in a laboratory, comprising

• a seat (30) for the upper end of the syringe cylinder (2),
• an accommodation body (34) with a piston seat (35) for the upper end of the syringe piston (3),
• holding devices (40, 41) for detachably holding the upper end of the syringe cylinder (2) and the upper end of the syringe piston (3) in their seats (30, 35),
• piston adjustment devices (37) for moving the accommodation body (34) relative to the seat (30),
• an annular sensing device (32), disposed in the seat (30) and having at least 14 sensing elements (47) that are uniformly distributed over the circumference,
• a guiding structure (33) on the circumference of the seat (30) for aligning a further guiding structure (16) on the circumference of the syringe cylinder (2) of a syringe (1), for aligning seven encoding elements (12) and checking elements (13), disposed between the encoding elements (12), to the sensing elements (47) of the sensing device (32), said encoding elements (12) being uniformly distributed over the upper edge of the syringe cylinder (2) and having the form of protrusions (12.1) and deepenings (12.2) in an arrangement of an encoding of the syringe (1) characterising the type of the syringe (1), the checking elements being in the form of further protrusions (13.1) and deepenings (13.2), and wherein the encoding elements (12) and the checking elements (13) have six protrusions (12.1, 13.1) in total, and
• an electronic analysing device (44) connected to the sensing elements (47) and being configured such that it states an error-free sensing upon the actuation of exactly six sensing elements (47), and such that it triggers the metering device (28) into an operating condition only in the case of an error-free sensing, said operating condition depending on the encoding of a syringe (1) determined by analysing the switched sensing elements (47).