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  • MGIT 960 Instrument: Parts

    Learning Objectives

    Understand the components/parts and functionality of the MGIT 960 instrument used in tuberculosis (TB) culture.

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Instrument Components:

 

  • Three Drawers (A, B and C),​ from top to bottom
    • Each drawer holds up to 320 Mycobacteria Growth Indicator Tube (MGIT) 7 ml tubes.
    • Each drawer contains:
      • Tube rack – wells in the rack, into which tubes are inserted, called stations
      • Detector assembly – moves from left to right and back, taking test readings for each of the 20 station columns and calibrator tube column
      • Drawer status indicators – three lamps located on the front of each drawer
        • One indicator lights any time a positive tube exists in the drawer
        • One indicator lights any time an out of protocol negative exists in the drawer
        • One indicator lights to inform if there is an error station in the drawer
      • Station status Light Emitting Diode (LEDs) – indicator LEDs located at each station indicate the various station statuses (positive, negative, error)
        • Colour (red, green, or orange)
        • State (on, off, or flashing)
  • Barcode Scanner
    • Located on the front of the instrument to scan tube labels/ barcodes for specimen identification
  • Floppy Disk/ USB Drive
    • Update instrument software, save data for troubleshooting and system diagnostic purposes
  • Liquid Crystal Display (LCD) ​
    • 640 X 480 pixel LCD presents information about the instrument status and function key to perform instrument operations
  • Keypad
    • Perform operations to enter and remove tubes, adjusting setup parameters
  • External Ports (5)​, at rear
    • To connect printer, field service diagnostic use, for connections to other systems

 

Figure: BACTEC™ MGIT™ Instrument Layout; Source: BD BACTEC MGIT Instrument Manual.

 

 

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