| 摘要 |
<p>A test tube (10), suitable to be immersed in a cryogenic fluid, comprises a containing body (11) having a perimeter wall (12) that defines a containing compartment (14), a bottom wall (13), disposed inside the latter to close it at the lower part, and a housing seating (16), inside the perimeter wall (12) and outside the containing compartment (14). A support element (17) for an identification code is suitable to be inserted into the housing seating (16), with at least a free surface (22) facing toward the outside of the housing seating (16) on the opposite side with respect to the bottom wall (13). In correspondence to said housing seating (16), mechanical constraint means (25, 31) are provided in cooperation with said perimeter wall (12) of the containing body (1 1) and with a peripheral portion (23) of the free surface (22) of the support element (17), in order to constrain the latter in a defined axial position with respect to the containing body (11).</p> |
