22
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.
