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2 putting into operation with suppressor – Metrohm 792 Basic IC User Manual

Page 51

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2 Installation

792 Basic IC

42

4 Check for leaks

x Check all capillaries and their connections between the high-

pressure pump and the detector block for escaping liquid. If

eluent escapes anywhere, the appropriate compression fitting

must be tightened further or changed.

5 Condition system

x Rinse the system with eluent until the desired stability of the

baseline is reached (normally 30}60 min; if the eluent is

changed, the establishment of the ion exchanger equilibrium

on the separating column can take longer).

x The instrument is now ready for sample determinations using

the selected system.

2.9.2

Putting into operation with suppressor

Before sample solutions can be injected at the

792 Basic IC (with use

of the suppressor), the entire system must be tested for leaks and then

conditioned with eluent until the baseline is stable. At the same time,

the suppressor module must be conditioned. Proceed as follows:

1 Open system "Prep MSM.smt"

x Start the «792 Basic IC» PC program, if it has not already

been started (see section 2.5.3).

x Select

File / Open / System

in the main window. Open the folder

Suppressed anion

and select the system file

Prep MSM.smt

.

Click on

.

2 Open control window

x Double-click the 792 icon in the system window. The control

window for manual control of the 792 Basic IC appears, which

indicates conductivity, pressure and current system parame-

ters.