Metrohm 797 VA Computrace - Manual (Page 262)

8 How to ...?
797 VA Computrace – Software
250
1. Click on or MAIN WINDOW / Mode / Determination .
2. Click on or MAIN WINDOW / Window / Working method
specification to open the WORKING METHOD SPECIFICATIONS
window.
3. Load the desired method into the WORKING METHOD SPECIFI-
CATIONS window (see How to Load a method, section 8.4).
4. Select Record calibration curve in the Calibration field of the
WORKING METHOD SPECIFICATIONS window (Is not selectable
with the CVS and CPVS mode).
5. Select Manual in the Addition field of the WORKING METHOD
SPECIFICATIONS window.
6. Select Batch with solution exchange in the Technique field of
the WORKING METHOD SPECIFICATIONS window.
7. Click to open the EDIT WORKING METHOD PA-
RAMETERS window.
8. Select the Determination tab (see section 5.2) and enter the Cell
volume and the number of calibration solutions in the No. of
cells field.
9. Select the Substances tab (see section 5.2) and make sure that
for each substance entered in the table the concentrations of
the calibration solutions are defined in the
CELL CONCEN-
TRATIONS window which is opened by clicking on the
button.
10. Close the EDIT WORKING METHOD PARAMETERS window by
clicking .
11. Place the first calibration solution in the measuring vessel at the
797 VA Computrace stand.
12. Click on or MAIN WINDOW / Window / Monitor to open
the MONITOR window.
13. Start the measurement by clicking the icon in the MAIN
WINDOW or the button in the MONITORING win-
dow.
14. Enter the Calibration curve id (used as part of the determination
file name) in the START CALIBRATION window and click .
15. Each time a solution exchange is required in the BATCH SOLU-
TION EXCHANGE window, replace the solution measured by
the next calibration solution.
Record calibration curve automatically
This method is used for preparing different calibration solutions by
adding automatically several times a concentrated standard solu-