Container for selective transfer of samples of biological material

A container for selective transport of samples of biological material or of biological origin comprising a body having at least a compartment suitable for containing at least a fluid or liquid and/or for containing at least a portion of a collecting device for biological samples, the body comprising at least an access opening to the compartment and at least a containing wall integral to the body and provided with at least a selective passage portion integral to the body, wherein the selective passage portion is configured such as to prevent exit of a fluid or liquid from the container, through the passage portion at least in an operating sealed condition in which the container is in a rest state or is subjected to a first value of mechanical shaking and/or is subjected to a first value of relative centrifugal force for a first predetermined time interval, and wherein the selective passage portion is further configured such as selectively to enable exit of the fluid or liquid from the container, across the passage portion, at least in an operating passage condition, in which the container is subjected to a corresponding second state of mechanical shaking and/or is subjected to a corresponding second relative centrifugal force, for a second predetermined time interval.