A device for taking samples from containers includes: a receiving body for at least one container; a container bar code reader positioned in the receiving body for containers; a support for a test tube with the ability to move; a bar code reader positioned in the support; and a fluid communication component between the container and the test tube. The support for test tubes includes at least a test tube loading position and a sample-taking position. The device also includes a controller configured to control position of the support for test tube. The controller can also include at least one sensor of the position of the support for test tube and a blocking component configured to block a position of said support for test tube.