Abstract: An automatic device for inoculating a sample on a substrate with a dilution mechanism formed by a head that holds a stylus in cooperation with a first dilution tank and a second dilution tank to dilute an original sample in at least one sub-sample and for inoculating the sub-sample on a substrate.

Abstract: A method and device for the gravimetric and in-series distribution of a predetermined quantity of a solution. The device has a delivery mechanism for delivering a solution, a weighing mechanism and a mechanism for measuring an operating value to establish a setpoint value of the delivery mechanism during a calibration step during which the weighing mechanism is used for the delivery of a predetermined quantity of solution. The device also has an actuating mechanism to actuate the delivery mechanism with the setpoint value to carry out one or more distribution steps with the delivery of the predetermined quantity of solution without using the weighing mechanism.

Abstract: A supplying system for an automatic inoculating machine for a sample on a substrate, characterized in that it includes a turret mobile in rotation, preferably around an axis substantially vertical, and an arm mobile in rotation, preferably around an axis substantially horizontal, carried by the turret, at a distal end of the aforesaid arm including means to fix a stylus, and means for raising or lowering the arm.