Once the user places each rack into the Lambda576, a gripper arm selects a tube and carries it to the camera. The camera detects the laser-friendly part of the tube, and then the gripper arm positions the tube in front of the laser. The laser etches a permanent marking onto the tube, and then the gripper arm returns it to its original position in the rack. The gripper arm picks up the next tube and repeats this process for every tube in the unit.
