Calibration Menu (pH) - eSelect M
From main screen select OK and using the right arrow
Keep scrolling until screen on the right is shown.
Pressing the right arrow button again will move to the
Next channel or channels if you have eSelect M3.
Press the OK button to begin ZERO calibration. Place
clean electrode in buffer solution 7 and wait 2-3
minutes.
Press OK to highlight the pH reading then using the left
and right arrow buttons adjust the display to match pH
7 followed by OK to confirm.
Press the right arrow to go to Slope Calibration and
repeat as above using buffer solution 4 or 9. Press ESC
when done.