Hach TitraLab Basic User Manual page 84

pH measurement
1. Place a magnetic stirring bar and the sample 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 MEASURE PH. "STABILITY" or "CONTINUOUS" is shown
on the display.
• STABILITY: pH is shown on the display once stable.
• CONTINUOUS: pH is continuously shown on the display and,
if a PC or printer is connected, transferred at a defined interval.
5. Select START MEASURING.
6. The result is shown on the display and, depending on the setting,
sent to a printer or computer.
7. Press OK to confirm the result.
8. To begin another analysis, select OK. "NEXT SAMPLE" is shown
on the display.
English 84
pH calibration
1. Place a magnetic stirring bar and 10 mL of the 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. "IMMERSE THE PH ELECTRODE IN
THE FIRST BUFFER." is shown on the display.
5. Select START.
6. Following successful calibration, "NEXT POINT" or "FINISH
CALIBRATION" is shown on the display.
• FINISH CALIBRATION: Calibration finished as one-point cali-
bration.
• NEXT POINT: Place a magnetic stirring bar and 10 mL of the
pH 4,00 calibration solution in a titration cell. Continue as
described.
7. "IMMERSE THE PH ELECTRODE IN THE SECOND BUFFER." is
shown on the display.
8. Select START.
9. Following successful calibration, "FINISH CALIBRATION" is shown
on the display.
10. Press OK to confirm.
Note: Use the lids supplied to close the titration cells containing the
calibration solutions. The calibration solutions can be used several times.