Metrohm 850 Professional IC Anion MCS LP-Gradient - Manual (Page 13)

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1 Introduction
850 Professional IC – Anion – MCS – LP Gradient
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Conductivity detector
The conductivity detector continuously measures the conductivity of the
liquid passing through and indicates these signals in digital form (DSP –
Digital Signal Processing). The conductivity detector exhibits outstanding
thermal stability and thus guarantees reproducible measuring conditions.
Separation column
The intelligent separation column is the heart of the ion chromatographic
analysis. It separates the different components corresponding to their
interactions with the column. The Metrohm analytical columns are equip-
ped with a chip on which their technical specifications and their history
(first use / setting up, operating hours, injections, ... ) are saved.
1.2 Intended use
The 850 Professional IC – Anion – MCS – LP Gradient is used for the
ion chromatographic determination of anions or polar substances with
sequential suppression in cases where the complexity of the separation
problem requires the use of gradients.
￭ Chemical suppression with the Metrohm Suppressor Module (MSM)
(see Chapter 3.18, page 55) and subsequent
￭ CO
2
suppression with the Metrohm CO
2
Suppressor (MCS) (see Chap-
ter 3.20, page 63).
The use of sequential suppression reduces background conductivity to a
minimum.
If required, the instrument can also be used for the determination of cati-
ons or anions without suppression.
The low pressure mixing valve and two additional eluent degassers in the
lower area of the instrument are used for the controlled mixing of up to 3
eluents.