Metrohm 872 Extension Module Sample Prep - Manual (Page 9)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
872 Extension Modul – Sample Prep ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
Existing 850 Professional IC instruments can be expanded to include addi-
tional functions with extension modules. Every 850 Professional IC instru-
ment can be supplemented with up to 3 extension modules.
With the 872 Extension Modul – Sample Prep, an 850 Professional IC
instrument can be extended to include additional sample preparation pos-
sibilities. For example, this makes it possible also to have inline dialysis in
AnCat systems (2.850.30x0) or to prepare samples with an anion high
pressure gradient system (2.850.2220).
The extension module is operated with MagIC Net software, just like the
IC instrument. When it is connected to a 850 Professional IC instrument,
MagIC Net recognizes the extension module automatically and checks its
functional capability. It controls and monitors the IC instrument with
extension module, evaluates the measured data and administers it in a
database.
The 872 Extension Modul – Sample Prep comprises the following
components:
Peristaltic pump
Peristaltic pumps are used for pumping sample and auxiliary solutions.
They can rotate in both directions.
Switching valve
The switching valve corresponds in its design to the injection valve that is
utilized in the models of the 850 IC Professional series. It can however also
be utilized with sample preparation and then it acts as a switcher between
two different flows, e.g. in the sample dilution for switching between
sample dilution and direct injection.