User Guide

10
TO VIEW THE pH CALIBRATION DATA
Press the FACTOR key and the meter will
display the last calibration date, in the fol-
lowing sequence:
- month, day and year
Press the FACTOR key again and the meter
will display the last calibration time as
- hour and minutes.
Press the FACTOR key again, the display
will show the offset calibration factor as:
- pH offset value
- pH 7 buffer
The pH offset value should be between
±0.50 pH.
For values higher than +0.50 or lower than
-0.50 pH the electrode is no longer reliable
and should be replaced.
FACTOR
DATE
FACTOR
TIME
FACTOR
pH