Hanna Instruments HI 96721C - Manual (Page 16)

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• After a few seconds, the display will show
“-0.0-” . The meter is now zeroed and ready
for validation.
• Remove the cuvette.
• Place the CAL CHECK TM Standard HI 96721-11
Cuvette B into the cuvette holder and ensure
that the notch on the cap is positioned securely
into the groove.
• Press CAL CHECK TM 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.
• Press ZERO/CFM and the lamp, cuvette and
detector icons will appear on the display,
depending on the measurement phase.