Owner's manual

7.5 Determinations
757 VA Computrace – Software
143
12. The sample solution spiked with standard addition solution is
measured three times. Then the
MANUAL ADDITION
window
appears.
13. Use a pipette to add 100 µLl Pb ion standard solution ρ (Pb) =
1 g/Ll (Metrohm No. 6.2301.100) into the measuring vessel
and click the
<OK>
button.
14. The sample solution spiked again with standard addition solu-
tion is measured three times. Then the
END OF DETERMINA-
TION
window appears.
15. Click the
<OK>
button. The determination is saved automati-
cally if specified on the
General
tab of the
GENERAL SETTINGS
window and the result report is printed if specified on the
Documentation
tab of the
EDIT WORKING METHOD
PARAMETERS
window.
Perform determinations using the 813 Compact Autosampler
1. Install the 813 Compact Autosampler (see section 1.3).
2. Click on
MAIN WINDOW / Settings / General settings
and select
the
Automation
tab.
3. Check the
Use Autosampler
option, modify the parameters for
automation as desired and close the
GENERAL SETTINGS
window.
4. Close the VA Computrace program and restart the program.
5. If desired, test the automation parameters: Click on
MAIN
WINDOW
/ Settings / General settings
and select the
Automation
tab. Fill two sample vessels with water and place them on the
sample rack. Click on , check the automation pa-
rameters and modifiy them if need be.
6. Click on or
MAIN WINDOW / Mode / Determination
.
7. Click on or
MAIN WINDOW / Window / Working method spe-
cification
to open the
WORKING METHOD SPECIFICATIONS
win-
dow.
8. Load the desired method into the
WORKING METHOD
SPECIFICATIONS
window (see How to load a method).
9. If desired, modify the loaded method (see How to edit the
working method).
10. Click on or
MAIN WINDOW / Window / Sample table
to open
the
SAMPLE TABLE
window.
11. Load the desired sample table or edit the current sample
table (see Sample table, section 5.6).