Hanna-instruments HI 904 Manuel d'utilisateur télécharger pdf (Page 31)

2-9

SETUP

Figure 3

2.3.4.3 Titration Vessel

The titration takes place in a sealed titration vessel. The titration vessel can also be referred

to as a reaction vessel, titration cell or reaction cell.

The primary design features of the HI 904 titration vessel include the following:

• Durability, easy to use, clean and maintain.

• All glass cells are manufactured with ground-glass joints for ultra-low water vapor

permeability and high chemical resistivity to Karl Fischer reagents.

• A sample port with open-top screw cap for easy septum replacement.

• A desiccant cartridge containing molecular sieves to dry the ambient air which

enters the cell as reagent and sample are added/removed from the titration vessel.

• Electrode port for generators with and without diaphragm.

To attach the titration vessel, see Figure 3 and follow the steps below:

• Align the vessel support (D) with the base plate and attach by rotating clockwise.

• Insert the support adapter (C) onto the vessel support (D) while aligning the notches.

If the o-ring (B) is not installed, insert it into the inner groove of the support adapter (C).

• Lower titration vessel into the vessel support (D) by gently pushing it through the

support adapter (C).

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Hanna-instruments HI 904 Manuel d'utilisateur Page 31