Hanna Instruments HI 83414 - Manual (Page 33)

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• Remove the cuvette.
• Place the CAL CHECK™ Standard cuvette B
into the holder. Make sure that the mark on
the glass is aligned with the mark on the
instrument top.
• Press the Chk key. The LCD will display dashes
and the lamp icon blinking, depending on the
measurement phase. After a few seconds the
display will show the validation standard
value.
The reading should be within specifications as
reported on the CAL CHECK™ Standard Certificate.
If the value is found out of specifications, please
check that the cuvettes are free of fingerprints, oil
or dirt and repeat validation. If results are still out
of specifications, then recalibrate the instrument.
• Place the zero cuvette (A) in the instrument
with the mark aligned with the mark on the
instrument top.
• Close the lid
• Press the Zero key. The dashes and the lamp
icon will blink on the LCD, depending on the
measurement phase. If the zeroing procedure
was successful, the display will show “
-0.0-”.
Warning: Do not validate or calibrate the instrument with standard solutions other than Hanna CAL
CHECK™ Standards, otherwise erroneous results will be obtained. For accurate validation
and calibration please perform test at room temperature, 18 to 25 ºC (64.5 to 77.0 ºF).