Metrohm 781 pH/Ion Meter User Manual
Page 35
3 Short operating tutorial
780/781 pH/Ion Meter, Manual
25
2 Start calibration with first standard
•
Immerse electrodes in the standard with the lowest F
-
concen-
tration
•
Start calibration with
•
If no temperature sensor is connected:
enter the temperature and exit with
•
Confirm standard concentration with
sary– correct it
•
Wait for measurement of the potential
3 Continue calibration with increasing standard con-
centrations
•
When the request 'Change std.
the electrodes from the first standard, rinse them with water
and blot them gently with a clean lint-free tissue
•
Immerse electrodes in the next standard and continue the cal-
ibration sequence with
•
In each case conform the standard concentration with
•
Repeat procedure for each remaining standard
4 Result
•
Wait for potential measurement, result will be displayed:
•
After 30 s the pH/Ion Meter will switch back automatically to
the measurement display. This can also be done immediately
with
CAL
ENTER
ENTER