Ph Calibration - Hach TitraLab User Manual

Operation
4.6

pH calibration

28
1. Place a magnetic stirring bar and pH 7.00 calibration solution in a titration cell.
2. Attach the titration cell to the magnetic stirrer.
3. Lower the electrode into the titration cell.
Note: Make sure that the electrode cannot be damaged by the stirring bar or come into contact
with the bottom of the titration cell. Make sure the combined pH Electrode, including the
reference element porous pin is covered by sample.
4. Select
PH CALIBRATION
shown on the display.
5. Select .
START
6. Following successful calibration, "
the display.
•
FINISH CALIBRATION
• : Place a magnetic stirring bar and pH 4.00 calibration solution in a
NEXT POINT
titration cell. Continue as described.
7.
"IMMERSE THE PH ELECTRODE IN THE SECOND BUFFER."
8. Select .
START
9. Following successful calibration, "
10. Press to confirm.
OK
.
"IMMERSE THE PH ELECTRODE IN THE FIRST BUFFER."
" or "
NEXT POINT
: Calibration finished as one-point calibration.
FINISH CALIBRATION
" is shown on
FINISH CALIBRATION
is shown on the display.
" is shown on the display.
is