An improved metering apparatus includes a metering pipette (1) and a metering attachment (2). The metering pipette (1) includes a metering body (3) and a piston (4) which is longitudinally displaceably guided in the metering body (3). The metering attachment (2) is connected or connectable to the metering pipette (1). It includes a stop body (16) having a stop (17) for the piston (4) (FIG. 2).