Metrohm 900 Touch Control Manual - Manual (Page 329)

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29 Parameters
900 Touch Control
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Table 8 Default values of the predefined titration rates for SET
Titration rate
slow optimal fast
Dynamics
– pH
– U und Ipol
– Upol
5.000
300.0 mV
40.00 µA
2.000
100.0 mV
10.00 µA
0.500
30.0 mV
5.00 µA
Max. rate 1.00 mL/min 10.00 mL/min maximum
Min. rate 5.00 µL/min 25.00 µL/min 50.00 µL/min
Stop criterion
Stop criterion
The titration is stopped when the endpoint has been reached and this
stop criterion has been fulfilled. If no stop criterion has been selected then
the titration will not be stopped. The stop conditions (see Chapter 29.3.4,
page 315) always lead to a stop, even if the stop criterion has not been
reached.
NOTE
In older instructions the delay time was usually defined as the stop cri-
terion. The same delay time may however result in different stopping
time points – because of different smallest possible volume increments
(depending on the cylinder volume). In contrast, if the stop drift is used,
the titration will always be stopped at the same curve slope dV/dt.
Selection drift | time | off
Default value drift
drift
The titration is stopped when the stop drift has been reached.
time
The titration is stopped when the endpoint has been exceeded during
a certain period of time (Delay time).
off
The titration will not be stopped until the stop conditions have been
fulfilled.
Stop drift
This parameter can only be edited with Stop criterion = drift.