In several separate plastic containers,
prepare a small amount of:
fresh tap water
pH 7.0
pH 4.0 and/or pH 10.0 calibration
solutions.
pH 7.0 calibration
1. Rinse and place both clean pH and
Temperature probe tips in the pH 7.0
calibration solution.
2. Wait a few minutes for the probes to
come to the same temperature as
the solution.
3. Press and hold ‘CAL’ for three
seconds. ‘pH 7 Calibrate’ will be
displayed.
4. Press ‘CAL’ to initiate calibration.
5. Calibration is complete when all the
‘’s on the screen become solid. The
screen will display ‘OK’ and the ‘pH 7’
indicator will appear to indicate
successful pH 7.0 calibration.
6. Now you can calibrate to pH 4.0
and/or pH 10.0
pH 7.0 calibration
solution
Temperature
Probe
pH Probe
water pH 7.0 pH 4.0
press cal buttonclean the pH probe
ready for pH 4 or pH 10 calibration
successful pH7 calibration