Clearing calibrated data from the
product
Clean the electrode probe 1 and the test liquid
absorption rod 1a (see "Cleaning the electrode probe
and the test liquid absorption rod").
Switch the product off and then on again (see "Power
on/off"). pH 7 is shown in the display.
76
GB/IE
Press /MODE 5 twice to enter the calibration
mode. CAL is flashing in the display 6 .
Press CAL/HOLD 4 repeatedly until CLr is flashing
in the display 6 . Press /MODE 5 .
NOTE: If the button is not pressed within 2 minutes,
Err starts flashing in the display 6 . Repeat all
previous steps of this section.