Metrohm 746 VA Trace Analyzer - Manual (Page 297)

5.6 Method Specifications
746 VA Trace Analyzer / 747 VA Stand
5-146
Parameter Range; Default value / Meaning
Soln.name 8 characters;
Name of standard addition solution
The name of the standard addition solution must be identical with the
name entered under
Soln.name with an ADD or PADD instruction.
If the standard addition solution has to be added automatically, this
solution must be entered on the "SOLUTIONS" page and assigned a
position
Pos. (see section 5.3.4). The standard addition solutions
entered on the "SUBSTANCES" page can here be automatically
copied to the solution list with the softkey
.
XXXXXXXX
--------
If already standard addition solutions have been entered on the "OP.
SEQUENCE" page, these names are displayed on the softkeys and
can be incorporated directly.
Mass conc. 0.001...999.99 ng...kg/L;
Mass concentration ρρ
std
of standard addition solution
If the standard addition solution has to be added automatically, the
mass concentration must also be entered on the "SOLUTIONS" page
(see section 5.3.4).
Range min 0.001...999.99 ng...kg/L;
Lower limit of working range
Here, a lower limit can be optionally defined for the working range in
the standard addition. If a mass concentration
Mass conc. less than
the value entered here is found for the substance, an error message is
put out and the remark
conc. out of range displayed on the
"RESULTS" page.
The lower limit of the working range (in terms of the effective mass
concentration
ρ
eff
) is marked by a vertical line in the display and on the
plot of the calibration curve.
Range max 0.001...999.99 ng...kg/L;
Upper limit of working range
Here, an upper limit can be optionally defined for the working range in
the standard addition. If a mass concentration
Mass conc. greater
than the value entered here is found for the substance, an error
message is put out and the remark
conc. out of range displayed on
the "RESULTS" page.
The upper limit of the working range (in terms of the effective mass
concentration
ρ
eff
) is marked by a vertical line in the display and on the
plot of the calibration curve.
M.conc./cm 0.001...999.99 ng...kg/L;
Axis scaling for plot of standard addition curve
Here, the scale in g/L per cm for the plot of the x axis of the standard
addition curve (
ρ
eff
) can be entered. In the absence of an entry, the
entire curve is plotted within 10 cm.