Measure a sample using a calibration curve – Metrohm 757 VA Computrace User Manual
Page 163
7.7 Calibration curve technique
757 VA Computrace – Software
153
variable addition volumes in the
Addition
fields, and close this
window by clicking
<OK>
.
11. Close the
EDIT WORKING METHOD PARAMETERS
window by
clicking
<OK>
.
12. Place the electrolyte solution (e.g. buffer) in the measuring
vessel at the 757 VA Computrace Stand.
13. Click on
or
MAIN WINDOW
/ Window / Monitor
to open the
MONITOR
window.
14. Start the measurement by clicking the
icon in the
MAIN
WINDOW
or the
button in the
MONITORING
window.
15. Enter the
Calibration curve id
(used as part of the determina-
tion file name) in the
START CALIBRATION
window and click
<OK>
.
Measure a sample using a calibration curve
For the determination of a sample using a previously recorded
calibration curve, this calibration curve must have been recorded
and saved. Proceed as follows:
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).
4. Select
Sample with calibration curve
in the
Calibration
field of the
WORKING METHOD SPECIFICATIONS
window.
5. Click
to open the
EDIT WORKING METHOD PA-
RAMETERS
window.
6. Select the
Determination
tab (see section 5.2) and enter
Sam-
ple identifier
,
Sample amount
,
Cell volume
and the name and di-
rectory of the determination with the recorded calibration
curve in the
Calibration curve
field.
7. Close the
EDIT WORKING METHOD PARAMETERS
window by
clicking
<OK>
.
8. Place the sample solution in the measuring vessel at the 757
VA Computrace Stand.
9. Click on
or
MAIN WINDOW
/ Window / Monitor
to open the
MONITOR
window.