Pipetting device with an upper part of the casing, a driving element, arranged in the upper part of the casing, with a movable drive element, a spigot receiver, arranged in the upper part of the casing, at least one claw receiver inside the spigot receiver, a lower part of the casing, at least one displacement equipment, arranged in the lower part of the casing, with a displacement chamber, at least one seat for detachably holding a pipette point, arranged on the lower part of the casing and being connected with the displacement chamber via a channel, a spigot, arranged on the lower part of the casing, to be inserted into the spigot receiver, at least one snap hook, arranged on the spigot, with a claw for engaging into the claw receiver when the spigot is inserted into the spigot receiver, and a springy shaft, which is deflectable transversely to the axis of the spigot in order to lift off the claw out of the claw receiver, a lock release ring, movable on the spigot, a wedge gear on the shaft and the lock release ring, effecting deflection of the snap hook towards the axis upon displacement of the lock release ring in a certain direction, and away from the axis upon displacement of the lock release ring in the direction opposite thereto, and a coupling equipment for coupling the drive element and the displacement equipment when the spigot is inserted into the spigot receiver.