Introduction; Instrument Description - Metrohm 942 Extension Module Vario LQH Manual

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1 Introduction

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Instrument description

942 Extension Module Vario LQH (2.942.0070)
942 Extension Module Vario are extension modules used to expand exist-
ing 940 Professional IC Vario instruments with additional functions. Each
940 Professional IC Vario instrument can be expanded with up to 3 942
Extension Module Vario instruments.
The 942 Extension Module Vario LQH expands a 940 Professional IC
Vario by adding extensive options for inline sample preparation and liquid
handling. Up to 6 auxiliary solutions can be provided in the instrument.
The 942 Extension Module Vario LQH enables guard column reactions, pH
adjustments and much more.
The 942 Extension Module Vario is operated using MagIC Net software,
just like the IC instrument. If a 942 Extension Module Vario is connected
to a 940 Professional IC Vario instrument, MagIC Net automatically
detects the 942 Extension Module Vario and checks its functional capabil-
ity. It controls and monitors the entire IC system including all connected
instruments; it evaluates the measured data and manages it in a database.
The 942 Extension Module Vario LQH consists of the following compo-
nents:
10-port valve
The 10-port valve is used during sample preparation and serves as a unit
for switching between different liquids.
Peristaltic pump
The peristaltic pump is used for pumping sample and auxiliary solutions. It
can rotate in both directions.
6-port valve
The 6-port valve mimics the injection valve in its design. It is used during
sample preparation. The 6-port valve serves as a switch-over point
between two different liquids, such as switching between sample and
auxiliary solution during Inline Matrix Elimination.
1 Introduction
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