4 sample determination – Metrohm 792 Basic IC User Manual

Page 63

3 Operating tutorial

792 Basic IC

3.4 Sample

determination

Following the calibration of the IC system as described in section 3.3

the first sample solution can be injected.

1 Start determination

Click on

or select

Start determination

of the

Control

menu in the system window. An empty chromatogram win-

dow opens where the baseline is recorded continuously. The

message

Initialisation [792 COM#]

appears in the

SYSTEM

STATE

window. Then the

Edit

sample

description

window is

opened automatically.

2 Enter information for determination

Enter the desired information concerning the sample in the

Edit

sample

description

window and confirm with

. Set

Ca-

libration level

and confirm with

3 Switch injection valve to "FILL" position

Click on the

button of the 792 icon in the system

window to switch the injection valve to the "FILL" position. At

the same time, the suppressor module is switched to the next

position.

4 Fill sample loop

Immerse the aspirating tubing 23

23 in the vessel containing the

drinking water sample.

Using the syringe fixed to the syringe tubing 25

25, siphon in ca.

1 mL drinking water.