Device for DNA sample fragmentation configured to produce ultrasonic waves

A device for the fragmentation of DNA samples that are in solution in a container by presenting a substantially homogenous field of ultrasonic waves in the vicinity of the container, the device comprising:

• a vessel for receiving a liquid, the vessel presenting a lateral face and being provided with means for producing ultrasonic waves so as to spread ultrasonic waves through the liquid;
• an outer frame at least partially disposed around at least a portion of the vessel so as to insulate ultrasonic waves propagating within the vessel from an outside environment;
• and
• a first support element resting on the vessel,
• the device further comprising a second support element comprising a passage designed to receive the container, the second support element being suspended from the first support element at a distance from said first support element by at least one suspension element forming at least one joint operably coupling the first support element and the second support element in three degrees of freedom to allow for the immersion of a lower portion of the container in the liquid, the vessel including structure defining an overflow device positioned along the lateral face of the vessel for precisely controlling the level of liquid received by the vessel, whereby the distance that the second support element is suspended from the first support element and the position of the overflow device along the lateral face of the vessel, provide for precise positioning of the container with respect to the level of liquid received by the vessel;
• wherein the overflow device includes a conduit extending between the vessel and the outer frame and to an exterior portion of the outer frame so as to convey excess liquid outside of the outer frame.