Hach-Lange TITRALAB Short-form Reminders - Manual (Page 23)

Maintenance recommendations
Daily
Check and maintain electrodes according to manufacturer recommendations.
Check that there is no crystallisation at piston level, if so rinse the burette using
appropriate solvent to remove crystals. If not sufficient, dismount burette to remove
crystals.
Check that there is no crystallisation at addition tip end that may block the reagent to
pour freely, if so use appropriate solvent to remove crystals.
Check the level of reagent in the reagent bottle
Empty waste bottle if installed.
Remove air bubbles from the burette and tubing by running a “Flush” procedure from
the burette menu.
Weekly
piston
Reagent
✓
glass
cylinder
Change burette
stand
Reagent
For burette air bubble removal,
run the Flush procedure
Form no. 11
Flush the burette with appropriate solvent to
ensure complete cleaning of burette and
stopcock.
Check the piston for leakages.
The burette stand must be changed when at
least 2 mm of liquid can be seen between
the two sealing lips. Refer to diagram.
Having 1 mm or less liquid between the two
sealing lips does not require to change the
burette stand.