4 CALIBRATION
The screen shows that the calibration is complete.
9. Press [YES].
The residual-chlorine zero calibration coefficient is updated.
10. Close the valve of the calibration tank.
11. Disconnect the calibration tank from the calibration inlet of the device.
Span calibration <residual chlorine>
Follow the instructions given in " Span calibration <residual chlorine>" (page 66) .
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