Hanna-instruments HI 903 Manual do Utilizador descarregar pdf (Página 85)

5-21

METHODS

5.5.14.3 Standby Duration

The user can enter the period of time which the cell is kept dry and ready for subsequent

analysis after a titration has finished.

The user can set the standby period up to 72 hours.

5.5.14.4 Imposed Current

The HI 903 uses a bivoltametric electrode system. During a titration, the titrator monitors

the voltage required to maintain a constant polarization current (imposed current).

This option allows the user to select the electrode polarization current from the predefined list.

Note: Higher polarization currents will speed the contamination of the electrode and

potentially degrade samples.

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Hanna-instruments HI 903 Manual do Utilizador Página 85