Hanna Instruments HI 96704 - Manual (Page 16)

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• Press CAL CHECK and the lamp, cuvette and
detector icons together with “CAL CHECK”
will appear on the display, depending on the
measurement phase.
• At the end of the measurement the display
will show the validation standard value.
The reading should be within specifications as reported in the CAL CHECK TM Standard
Certificate. If the value is found out of the specifications, please check that the cuvettes are free
of fingerprints, oil or dirt and repeat validation. If results are still found out of specifications,
then recalibrate the instrument.