Hanna Instruments HI 2221 - Manual (Page 19)

19
• •• •• The pH calibration offset.
• •• •• The pH calibration slope in mV/pH normalized to 25 °C (the
percentage is referred to the ideal value of 59.16 mV/pH).
Note: If you calibrate using electrodes with pin the electrode condition
and response gauges appear while the offset and slope are
displayed.
• The pH calibration buffers in calibrating order and with the selected
resolutions used during calibration.
The first pH calibration buffer:
The second pH calibration buffer:
The third pH calibration buffer:
The fourth pH calibration buffer:
The fifth pH calibration buffer:
Note: The “OLd” message displayed beside the pH value means that
this buffer was not used during last calibration. Press and hold
down SETUP if you want to see calibration date (or time, if old
calibration was performed on the same day as the current calibration).