Metrohm viva 1.0 Manual - Manual (Page 432)

5.5 Method run subwindow
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viva 1.0
VA measuring command
Selection of the VA measuring command whose evaluation quantity is to
be checked.
Selection 'VA measuring command'
Substance
Selection of the substance for which the evaluation quantity is to be
checked.
Selection 'Substance'
Standard deviation
Specification of the standard deviation of the evaluation quantity for the
selected substance. If this value is not achieved, then the VA track will no
longer be called again. All of the measuring results of the VA measuring
command are used for the calculation of the standard deviation that were
generated at the moment of the last two executions of the VA track called
by CALL COND.
A standard deviation of around 2% is to be recommended for small sig-
nals (< 500
μC) and a value of around 0.5% for larger signals (> 500 μC).
Input range 0.1 - 99.9 %
Default value 0.5 %
Example: measuring command with 2 measurement cycles (replications)
The following single results x-y of run x and replication y are used for the
calculation of the standard addition:
After 2 runs: 1-1, 1-2, 2-1, 2-2
After 3 runs: 2-1, 2-2, 3-1, 3-2
After 4 runs: 3-1, 3-2, 4-1, 4-2
etc.
Number of runs
on | off (Default value: off)
If this check box is activated, then the defined action is triggered when
the specified number of runs of the VA track has been achieved.
Number of runs
Number of runs of the VA track, after which the call of the VA track is to
be canceled.