Hanna Instruments HI 88713 User Manual

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Note: The reading of the first point could be skipped for FNU and NTU modes by pressing “Skip”
functional key. In this case, the 0.00 value will be used for calibration.

Place the cuvette for first calibration point:

<0.1 FNU (NTU) calibration cuvette for all

modes except FAU mode.

15 NTU formazin prepared standard for FAU

mode.

Note: For the FAU mode, if necessary, press UP
or DOWN key to edit the calibration point value
to match the exact value of the standard.

Close the lid and press “Read” functional key. The display will show the value blinking and the

light icon during measurement.
Note: If the Average mode was previously selected, the measurement in calibration mode will be
done using the average.

At the end of the measurement, the second proposed calibration point is displayed.

SECOND POINT CALIBRATION

Remove the first calibration cuvette.

Place the cuvette for second calibration point:

15 NTU (FNU) calibration cuvette for NTU

ratiometric mode.

15 NTU formazin prepared standard for NTU

non-rating and FNU modes.

100 NTU formazin prepared standard for FAU mode.

Note:

If necessary, press UP or DOWN key to edit

each calibration point value to match the exact value of

the standard as measured with a reference turbidimeter.

Close the lid and press “Read” functional key.

The display will show the value blinking and the light icon during

measurement.

At the end of the measurement, the third proposed calibration point is displayed.

At this moment it is possible to exit calibration by pressing “End” functional key.

If the calibration is terminated, the display will briefly

show “Store...” and the two point calibration is saved.
The instrument returns to the main screen.

THIRD CALIBRATION POINT

Remove the second standard cuvette.

Place the cuvette for third calibration point:

100 FNU (NTU) calibration cuvette for NTU

ratiometric mode.

100 NTU formazin prepared standard for NTU

non-ratio and FNU modes.

750 NTU formazin prepared standard for FAU mode.

Note:

If necessary, press UP or DOWN key to edit each

calibration point value to match the exact value of the
standard as measured with a reference turbidimeter.

Close the lid and press “Read” functional key.

The display will show the value blinking and the light icon during

measurement.

At the end of the measurement, the fourth proposed calibration point is displayed.

At this moment it is possible to exit calibration by pressing “End” functional key.

If the calibration is terminated, the display will briefly

show “Store...” and the three point calibration is saved.
The instrument returns in the main screen.