Instruction Manual

6.2 Calibration techniques with CVS and CPVS
797 VA Computrace – Software
181
Example for Response curve:
C:\User XYZ\Data\Response curve.dth
Achtung: To make sure that for "Suppressor ana-
lysis with 838 Advanced Sample Processor and
RC" always the latest response curve file is taken
for the calculation, the path of the file chosen for
Response curve, must match with the path defined
for the parameter Data folder (for the currently
logged-in user) on the tab User Directories of the
window USER RIGHTS.
Achtung: A determined response curve file is on-
ly adopted automatically if the checkbox Save ca-
libration curves additionally without date and time
on the General tab of the GENERAL SETTINGS
window is checked.
No. of replications [ 1...10 ; 2 ]
Number of replications (= total number of measu-
rements) for each variation (sample, standard ad-
dition, calibration level, conditioning measure-
ment). For cyclic modes (CV, CVS, CPVS) the “total
number of measurements” is the No. of replica-
tions
multiplied with the number of Save last ..
sweeps
(Voltammetric tab). “Total number of mea-
surements” must not exceed 10.
Voltammetric tab with Calibration technique “RC Sample with
response curve”
The
Voltammetric tab of the EDIT WORKING METHOD PARAME-
TERS
window contains parameters for preparation procedures and
VA measurement modes. With the Calibration technique "RC Sam-
ple with response curve" the Voltammetric parameters are not ed-
itable. They depend on the parameters defined for recording the
calibration curve.
Following parameters have to be defined:
Initial mixing time (s) [ read only ] [ 0...80600 s ; 10 s ](see Initial
mixing time with CVS and CPVS, section 6.3)
Time of mixing before the first measurement of
the sample solution.
Conditioning Cycles [ read only ] (see Conditioning cycles with CVS
and CPVS, section 6.3)
Start potential (V) [ -5...+5 V ; 0.2 V ] [ read only ]
Start voltage for the cyclic conditioning sweep.
End potential (V) [ -5...+5 V ; 1.625 V ] [ read only ]
Final voltage for the cyclic conditioning sweep.
No. of cycles [ 0...X ; 0 ] [ read only ]
Number of conditioning cycles.