Metrohm 797 VA Computrace - Manual (Page 161)

5.8 Data processing and evaluation
797 VA Computrace – Software
149
• Determining the working range
The calibration curve is defined only for the range between the
calibration solutions with the lowest and highest mass concen-
trations. Extrapolations outside this range are not allowed.
• Keep temperature constant
Owing to the large temperature dependence of the measured
values (≥ 2%/°C), it is advisable to work with the 6.1418.220
thermostatted measuring vessel.
• Consideration of blank values
Any blank values must be determined separately and sub-
tracted by means of the formula in the
CALCULATION window.
Formula calculation
The last step in the evaluation is the calculation of the calculation
formulae entered in the
CALCULATION window for the output of
the
Final results
:
Without changing the default values for Multiplier , Divisor , and
Summand , the Final Result is calculated as the concentration
multiplied by the Cell volume and divided by the Sample amount .
The final result has the Final unit selected in the CALCULATION
window.