Hanna Instruments HI 903 - Manual (Page 110)

7-4
AUXILIARY FUNCTIONS
7.2 Burette
To access the Burette screen, press from the Idle screen.
Highlight the desired option and then press .
Note: Do not perform burette functions with solvent below the “Min” sign. Doing so could
spray titrant on the beaker top or other components.
7.2.1 Prime Burette
After solvent has been added to the titration cell, the burette can be primed with titrant. The
priming process consists of several cycles of filling and emptying the burette with titrant. It
ensures that any air, water or water vapor in the burette or tubing is removed.
Two rinse cycles of burette are shown in the figure below. The dispensing tube is connected
on the right side and the aspiration tube on the left side.
Note: Before starting this operation, the aspiration tube must be inserted into the titrant
bottle.