Abstract: A homogenizer device, is for the preparation of homogenized samples of food substances the bacterial flora content of which is to be analyzed includes a cup-like container (4) for receiving the sample to be homogenized and a lid (16) for the closure of the cup-like container. The homogenizer device (40, 42) includes a shaft (40) having a proximal end (44) provided with an engagement (44) for connection to a drive and a distal end (46) connected to an abrasive homogenizer member (42), the shaft (40) being mounted rotatably in an opening (24) of the lid (22, 16) and being provided with a tapered proximal portion (56) having a diameter which increases towards the proximal end (44) and which opposes forward movement of the shaft towards the sample by dimensional interference with the opening (24).

Abstract: A deconstituting device for the preparation of biological samples comprising: a container (2) in the form of a cup for holding the tissue to be deconstituted; a shaft (26) mounted for rotation inside the said container (2) with a blade (28) on the end inside the container; the said shaft (26) being supported axially by ball coupling means (30, 34) and having engagement means (36) on its end outside the container for coupling the said shaft to motor means; the device being used in automatic apparatus, which includes: at least one support element (54) with a plurality of housings for receiving the container; a deconstitution station (50) which includes at least one motor (52) with a drive shaft (55) for engaging the said engagement means (36) of the shaft (26) of the deconstituting device, this motor being movable between a position disengaged from the said shaft (26) and one engaging it, and; conveyor means (66, 68 and 78) for transporting the said support element (54) to the deconstitution station.

Abstract: A deconstituting device for the preparation of biological samples comprising: a container (2) in the form of a for holding the tissue to be deconstituted; a shaft (26) mounted for rotation inside the said container (2) with a blade (28) on the end inside the container, the said shaft (26) being supported axially by ball coupling means (30, 34) and having engagement means (36) on its end outside the container for coupling the said shaft to motor means; the device being used in automatic apparatus, which includes: at least one support element (54) with a plurality of housings for receiving the container; a deconstitution station (50) which includes at least one motor (52) with a drive shaft (55) for engaging the said engagement means (36) of the shaft (26) of the deconstituting device, this motor being movable between a position disengaged from the said shaft (26) and one engaging it, and; conveyor means (66, 68 and 78) for transporting the said support element (54) to the deconstitution station.

Abstract: A mechanical triturator for biological material comprises a cylindrical housing defining a chamber in which a cutting member constituted by a perforated plate is disposed. A rotor member, mounted for rotation in the chamber, has a screw which cooperates with the cutting member in order, as a result of its rotation, to supply the biological material into contact with the cutting member and to cause the trituration thereof.