Heads are available in 2 colours and with a modern design with individually adjustable numerical sample identification to help distinguishing between inlet and outlet. - Menu driven. - With backlit LCD graphical display. - Control LED. - 3 operating keys. - For a direct output of BOD measuring values on the display. - Preselection of volume. - Selectable measurement period (1 to 7 days). - Curve display. - Instantaneous value output. Heads are available in 2 colours and with a modern design with individually adjustable numerical sample identification to help distinguishing between inlet and outlet. - Menu driven. - With backlit LCD graphical display. - Control LED. - 3 operating keys. - For a direct output of BOD measuring values on the display. - Preselection of volume. - Selectable measurement period (1 to 7 days). - Curve display. - Instantaneous value output.