Hanna Instruments HI 2214 - Manual (Page 14)

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Press the ARROW keys to select another buffer to be
replaced.
Press
CFM to confirm the buffer that will be replaced.
Press CAL to leave calibration without replacing.
Note: If the replaced buffer is outside the ±0.2 pH
window, around each of the calibrated buffers, it is
possible to select this buffer for next calibration
during current calibration.
WORKING WITH CUSTOM BUFFERS
If a custom buffer was set in SETUP menu, it can be selected during
calibration by pressing the
ARROW keys. The “BUFFER pH” tag will
blink.
Press
SETUP if you want to adjust the buffer value. The buffer value will
start blinking.
Use the
ARROW keys to change the buffer value.
After 5 seconds the buffer value is updated. Press SETUP if you want to
change it again.
Note: Custom buffer value can be adjusted in a ±1.00 pH window,
around the set value.