Metrohm 746 VA Trace Analyzer - Manual (Page 193)

5.3 Set Up
746 VA Trace Analyzer / 747 VA Stand
5-42
Parameter Range; Default value / Meaning
Dil.settings display only
Dilution settings
Title for the dilution parameters of the Dosimats/Dosinos. With the aid
of these parameters and the softkey
standard
solutions can be prepared. For this operation, the 6.5611.010 pipet-
ting equipment must have been installed at the Dosimat/Dosino and
connected to the remote interface of the 746 VA Trace Analyzer (see
section 3.10.6).
The initial volume V.init std needed for the dilution is automatically
calculated according to the formula
V.init std = V.end dilution * C.end dilution / C.init std
If the initial volume V.init std is smaller than 10 µL, the error mes-
sage DOSIMAT ERROR 11: Illegal Dilution settings appears.
We recommend to make only dilutions with an initial volume
V.init std
≥ 20 µL.
C.init std 0.001...999.9 ug...kg/L; 1.00 g/L
Initial standard concentration
Initial concentration of the standard used for the preparation of new
standard solutions.
The initial standard concentration C.init std must be ≥ 2 times the
desired end concentration C.end dilution .
C.end dilution 0.001...999.9 ng...g/L; 10.00 mg/L
End concentration
Desired end concentration of the new standard solution to be pre-
pared.
The end concentration C.end dilution must be ≤ 0.5 times the initial
standard concentration C.init std .
V.end dilution 0.1...999.9 mL; 10 mL
End volume
Desired end volume of the new standard solution to be prepared.