Metrohm tiamo 2.3 Patch 1 - Manual (Page 475)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 5 Method
tiamo 2.3 Patch 1 ￭￭￭￭￭￭￭￭ 459
The figure shows that the evaluation also requires measured values from
the measuring point list after the equivalence point as well.
For the recognition of the EPs found, the set EP criterion is compared
with the ERC (Equivalence point Recognition Criterion) found. The ERC is
the first derivative of the titration curve combined with a mathematical
function which is more sensitive for flat jumps than for steeper ones. EPs
whose ERC is smaller than the set EP criterion will not be recognized.
Commands
Depending on the measured value one of the following four DET com-
mands can be selected:
￭ DET pH
Potentiometric pH measurement with pH electrodes (measured quan-
tity pH).
￭ DET U
Potentiometric voltage measurement with metal electrodes (measured
quantity voltage U).
￭ DET U
Voltametric measurement with selectable polarization current (meas-
ured quantity voltage U).
￭ DET Upol
Amperometric measurement with selectable polarization voltage
(measured value current I).