Fresenius Medical Care 2008k Technical Manual page 95

4. The second calibration that is performed is the automatic blood dimness
calibration. When its finished, the following calibration complete screen
will be displayed:
Press the [CONFIRM] key to save the data. The screen will change.
5.
Press the [CONFIRM] key again to complete the calibration and return to
the Calibrate Sensors screen.
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Fresenius 2008K Calibration Procedures
P/N 507296 Rev. A