Metrohm 746 VA Trace Analyzer User Manual
Page 236
5.5.2 RESULTS
746 VA Trace Analyzer / 747 VA Stand
5-85
Parameter
Range; Default value / Meaning
Method
display only
Method name
Name of the method loaded in the working memory (file name without
extension
.mth
).
Determ.
display only
Determination name
Name of the determination loaded in the working memory (file name
without extension
.dtm
).
Substance
display only
Substance name
Name of the selected substance. Additional substances can be
selected with the softkey
.
Mass conc.
display only
Mass concentration
ρρ
s
(variable MC:
The mass concentration in the sample
ρ
s
for the selected substance
with numeric value and unit (g/L, mg/L,
µ
g/L, etc.) determined using
the selected calibration (see section 6.9).
The mass concentration
ρ
s
can be used in formulae as
MC:
(
= substance name) for further calculations. It should be
noted that this value is put out in such cases in the base unit g/L
without prefix (see section 5.6.4).
The mass concentration
ρ
s
of the substance always refers to the
addition volume
V.sample
defined for the SMPL instruction (in other
words, depending on the entry to
S0
,
S0/S2
or
V.fraction
). The
effective mass concentration
ρ
eff,s
of the investigated substance in the
measuring vessel, referred to the total solution volume V
eff
it contains
at the start of the first measurement, is reported only in the graphical
representation of the calibration curve (cf. here the remarks on
Sample
size/S0
in section 5.4.4).
This field remains empty (
–
) if no calibration technique has been
selected (
Technique = none
) or no result has been found.
MC.dev.
display only
Total deviation for mass concentration
ρρ
s
of the substance
(variable MD:
Absolute total deviation of the mass concentration
ρ
s
of the substance
with numeric value and unit as well as, in brackets, the relative total
deviation in % (for further details, see section 6.9.3).
The total deviation of the mass concentration
ρ
s
of the substance can
be used in formulae as
MD:
(
= substance name) for
further calculations. It should be noted that this value is put out in
such cases in the base unit g/L without prefix (see section 5.6.4).
The total deviation
MC.dev.
defines the range
Mass conc.
±± MC.dev.
in which the mass concentration
ρ
s
of the substance may be expected
with a probability of 68.3% (see section 6.9.3).