Metrohm 799 GPT Titrino - Manual (Page 222)

5.2. Connection of electrodes, preparing titration vessel
799 GPT Titrino
218
Setting up the titration vessel
The titration vessel is set up as shown in Fig. 5-6. During a titration, it
is important to ensure that the solution in contact with the electrode
is thoroughly mixed. This is achieved by
• efficient stirring. But it should not be too fast, otherwise the stirrer
vortex will suck in air bubbles and CO
2
or O
2
can disturb the titra-
tion.
• placing the buret tip according to the drawing below for maximum
distance between the adding of the titrant and the electrode.
Stirrer
Buret
Electrode
Pay attention on the direction of rotation of the stirrer!