Metrohm 904 Titrando User Manual

7.2 SET titration
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904 Titrando
Problem Cause Remedy
2. Remove and clean the exchange unit (see
the chapter in the manual for the exchange
unit, "Care and upkeep").
3. Contact your local Metrohm Service
department if necessary.
The data of the exchange
unit can no longer be read.
The data chip is damaged,
either mechanically or by
chemical action.
￭ Contact your local Metrohm Service
department to have the data chip replaced.
￭ If necessary, remove the data chip yourself
so that the exchange unit can continue to
be used in the meantime.
7.2 SET titration
Problem
Cause Remedy
The titration will not
be finished.
The minimum dosing rate is
too low.
Select the user-defined titration rate and
increase the minimum rate (see manual/help of
the software used).
The stop criterion is unsuit-
able.
Adjust the control parameters (see manual/
help of the software used):
￭ Increase the stop drift.
￭ Select a short delay time.
The sample is over-
titrated.
The control parameters are
unsuitable.
Adjust the control parameters (see manual/
help of the software used):
￭ Select Titration rate = slow.
￭ Select the user-defined titration rate and
increase the control range.
￭ Select the user-defined titration rate and
reduce the maximum rate.
￭ Select the user-defined titration rate and
reduce the minimum rate.
￭ Stir faster.
￭ Arrange the electrode and buret tip to an
optimum.
The electrode responds too
slowly.
Replace the electrode.
The titration time is
too long.
The control parameters are
unsuitable.
Adjust the control parameters (see manual/
help of the software used):
￭ Select Titration rate = optimal or fast.

Metrohm 904 Titrando Specifications

General

Brand	Metrohm
Model	904 Titrando
Category	Laboratory Equipment
Language	English