Abstract: A non-destructive test system includes a plurality of impact devices including a knob configured to generate at least one flexural mode in a material when a surface of the material is impacted by the knob, a controller configured to independently control each of the plurality of impact devices, the controller having a communications channel for each of the plurality of impact devices, and a microphone configured to detect an acoustic response generated upon impact of the knob on the surface of the material, the acoustic response being based on the at least one flexural modes generated in the material.

Abstract: A non-destructive test system includes a plurality of impact devices including a knob configured to generate at least one flexural mode in a material when a surface of the material is impacted by the knob, a controller configured to independently control each of the plurality of impact devices, the controller having a communications channel for each of the plurality of impact devices, and a microphone configured to detect an acoustic response generated upon impact of the knob on the surface of the material, the acoustic response being based on the at least one flexural modes generated in the material.

Abstract: A culture dish (1) comprising a basic structure (2) with a number of macro wells (4) for culturing oocytes and embryos, the culture dish further comprising a lid (3) with a movable part (8), the movable part (8) having an opening (11) adapted to the size of the macro wells (4), the movable part (8) being movable between a first position where all macro wells are closed by the lid (3) and further positions where for each further position (11) the opening (11) is aligned with one of the macro wells (4) to allow access to this macro well (4) through the opening (11) in the lid (3).