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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.
LOG
