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

11. Close the

EDIT WORKING METHOD PARAMETERS

window by

clicking

12. Place the electrolyte solution (e.g. buffer) in the measuring

vessel at the 757 VA Computrace Stand.

13. Click on

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

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

MAIN WINDOW

/ Mode / Determination

2. Click on

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

8. Place the sample solution in the measuring vessel at the 757

VA Computrace Stand.

9. Click on

MAIN WINDOW

/ Window / Monitor

to open the

MONITOR

window.