Hanna Instruments HI 9829 - Manual (Page 39)

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• After the calibration point is confirmed, to avoid cross-contamination immerse
the sensors in the next calibration buffer rinse solution and stir gently.
• Press <Cal Point> to select the next buffer (if necessary), and repeat the cali-
bration procedure outlined above with the second and third buffers.
Note Note Note Note Note The calibration procedure can be terminated after a single or 2 point
calibration by pressing <ESC>. The message “Storing” followed by
“Calibration completed” will be displayed.
• Press <OK> to return to the Calibration menu.
• Press <Measure> to return to the measurement screen.
Note: If a single point calibration is conducted after restoring the factory calibra-
tion, it will offset the entire factory probe values by the same offset required to
calibrate the sensor to the single buffer value.
Custom buffer calibration
The HI 9829 permits a single custom buffer to be used for pH calibration. This
can be used along with standard buffers as part of a 2 or 3 point calibration or
as a single point.
• To select this option first press <Cal. point> and then <Custom> while the
meter is waiting for stable reading.
• A text box window will appear. Use the keypad to enter the value of the buffer
at the current temperature. The valid range for custom a buffer is from 0.00
to 14.00 pH.