Hach TitraLab Manual Básico Del Usuario página 86

Chloride analysis in liquid samples
1. Place a magnetic stirring bar in a titration cell and dispense the
sample as follows:
• Milk or liquid dairy products: 10 mL sample
• Water: 10 mL sample
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 Silver rod electrode, including the
reference element porous pin is covered by sample.
4. Select ANALYZE CHLORIDE (V). "INSERT SAMPLE: 1" is shown
on the display.
5. Select OK.
The following steps are carried out automatically by TitraLab:
• Acid is dispensed into the titration cell for 2 seconds
• The solution is stirred for 3 seconds
• Titration is then started
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.
To begin another analysis, select OK. "NEXT SAMPLE" is shown on the
display.
English 86
Manual component activation
Burette
1. Select MANUAL ACTIVATION > BURETTE and press OK to
confirm.
• Select FILL with the DOWN navigation key to fill the burette.
• Select EMPTY with the UP navigation key to empty the burette
into the titration cell.
• Select RETURN with the LEFT navigation key to empty the
burette back into the titrant bottle.
Note: Repeat this procedure multiple times to make sure that the
dispensing process functions correctly.
Pump
1. Select MANUAL ACTIVATION > PUMPS and press OK to confirm.
2. Press OK to switch the pump on or off.
Note: Repeat this procedure multiple times to make sure that the
dispensing process functions correctly.
Stirrer
1. Select MANUAL ACTIVATION > STIRRER and press OK to
confirm.
2. Press OK to switch the stirrer on or off.
3. Use the navigation keys UP and DOWN to select the stirring speed.