Auxiliary functions – Hanna Instruments HI 903 User Manual

Page 112

7-6

AUXILIARY FUNCTIONS

The manual dispense volume must be between the limits shown below:

0.001 to 4.500 mL for a 5-mL burette

7.2.4

Purge Burette

This option allows the burette to be emptied before cleaning and/or storing.

Note: Before starting this operation, remove the aspiration tube from the titrant bottle.

The figures below show the steps in a purge burette operation.

7.3

Stirrer

Note: When custom stirrer is selected (see Section 4.4, Stirrer in General Options chapter),

the commands related to the stirrer are not available.

The stirrer can be turned on and off by pressing

while in

Idle

mode.

During the titration process the stirrer cannot be turned off.
The stirring speed is set within the method parameters (

see Section,

5.5.6 Stirring Speed

During the titration process, the stirring speed can be manually adjusted by using the

and

keys.