Metrohm 746 VA Trace Analyzer - Manual (Page 308)

5.6.3 SUBSTANCES
746 VA Trace Analyzer / 747 VA Stand
5-157
Parameter Range; Default value / Meaning
V0.CSoln. 0.1...50.0 mL; 5.000 mL
Addition volume of calibration solutions
Volume of every calibration solution that must be added to the meas-
uring vessel.
If work is performed with the 695 Autosampler, an asterisk
* can be
entered here in place of a volume. However, this is admissible only if
the instruction
CSOLN/F with subsequent solution transfer to the
auxiliary or measuring vessel is used.
If calibration curves of several substances are recorded simultane-
ously,
V0.CSoln. must be the same for every substance.
Coefficients display only
Coefficients
Title for the calculated coefficients of the calibration curve for the
internal standard.
Prop.fact. -999.9...999.9 e-20...e+20;
Proportionality factor
Display of the proportionality factor between analyte and reference
substance. The proportionality factor is identical with the slope calcu-
lated from the calibration lines. This value can also be entered or
changed manually.
This value can be used in formulae as
KS: ( = sub-
stance name) for further calculations.
Mean dev. -999.9...999.9 e-20...e+20;
Mean deviation of calibration curve for internal standard
Display of the calculated, mean deviation of the measured values
about the calibration curve. This value can be changed manually.
The size of
Mean dev. can be used as a measure of the quality of the
calibration curve for the internal standard.
This value can be used in formulae as
KD: ( = sub-
stance name) for further calculations.
CSoln.name 8 characters;
Name of calibration solutions
The entry of a name for the calibration solutions is optional. The
names are used as follows:
• Without 695 Autosampler, before every manual addition of a
calibration solution to the measuring vessel the message
Next
Standard, CSOLN 'CSOLN.name''Mass conc.' > M appears with
details of the name and the mass concentration of the calibration
solution.
• If work is performed with the 695 Autosampler with Auto.samples
= on , all calibration solutions must be entered on the "SAMPLES"
page. We advise you to enter the names CSoln.name there as
sample identification.
Mass conc. 0.001...999.99 ng...kg/L;
Mass concentration ρρ
a,n
of calibration solutions
The mass concentration must be specified for all n calibration solu-
tions defined by the instruction
CAL)n .