Metrohm viva 1.1 (ProLab) - Manual (Page 381)

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4 Database
viva 1.1 (for process analysis)
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Variables
on | off (Default value: off)
Shows the variables used in the formula.
NOTE
Variables that have not been created in the run are not displayed and
lead to invalid results.
Calculation of the concentration of a substance:
NOTE
The calculation does not apply to Dilution Titration.
Concentration(sample) = concentration(measuring cell) * (cell volume /
sample amount) * (dilution volume / analysis volume)
Concentration(sample) Concentration of the analyte in
the sample
Variable = CONC
Concentration(measuring cell) Concentration of the analyte in
the measuring cell at the moment
of sample measurement
Variable = CONCM
Cell volume Sum of the volumes of all solu-
tions added to the measuring cell
until the measurement of the
sample.
Variable = VAR{1}.VTOT
Sample amount Volume of the sample in mL
Dilution volume Volume to which the sample
amount is filled up with ultrapure
water
Analysis volume 'x' mL of the dilution volume,
which is pipetted into the measur-
ing cell