20
CALIBRATION PROCEDURE
• Turn the meter on by pressing ON/OFF.
• When the beeper sounds briefly and the LCD displays dashes, the meter is ready. The blinking
“ZERO” asks for instrument zeroing.
• Press and hold CAL CHECK for three seconds to enter calibration mode. The display will show
“CAL” during calibration procedure. The blinking “ZERO” asks for instrument zeroing.
• Place the CAL Check
TM
Standard HI96751‑11 Cuvette A into the cuvette holder and ensure
that the notch on the cap is positioned securely into the groove.
Note: It is possible to interrupt calibration procedure at any time by pressing CAL CHECK or
ON/OFF keys.
Warning: Do not calibrate the instrument with standard solutions other than the Hanna Instruments
CAL Check™ Standards, otherwise erroneous results will be obtained.
3''
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