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30
Close the lid and press READ/TIMER . The
display will show blinking dashes and the icons
for cuvet, detectors and lamp will appear during
measurement.
At the end of the measurement, the third
calibration point (100 NTU) is displayed on the
primary LCD and “CAL P.3” on the secondary LCD
and “READ” tag will blink.
At this moment it is possible to exit calibration
by pressing CAL/CHECK. The instrument will
memorize the two-point calibration data and
will return to measurement mode.
THREE-POINT CALIBRATION
To perform a three-point calibration, continue the
procedure with the following steps:
Remove the second standard cuvet.
Place the 100 NTU standard cuvet (or the third
prepared formazin standard) into the holder,
with the cuvet mark aligned with the sign on
the instrument top.
Close the lid and press READ/TIMER
. The
display will show blinking dashes and the icons
for cuvet, detectors and lamp will appear during
measurement.
At the end of the measurement, the fourth
calibration point (750 NTU) is displayed on the
primary LCD and “CAL P.4” on the secondary LCD
and “READ” tag will blink.
At this moment it is possible to exit calibration
by pressing CAL/CHECK. The instrument will
memorize the three-point calibration data and
will return to measurement mode.