wtw inoLab pH/ION Level 2 Operating Manual page 38

Operation
Three point
calibration
122
12 To return to the measuring mode: press the
or continue with the three point calibration.
g
13 Press the
The previously selected concentration of the third
standard solution appears on the display.
14 Enter the current concentration of the third standard
solution using
15 Thoroughly rinse the electrode with distilled water.
16 Immerse the electrode into the third standard solu-
tion.
g
17 Press the
The electrode voltage appears on the display, the AR
display indicator flashes.
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