Metrohm 861 Advanced Compact IC - Manual (Page 11)

1.1 Instrument description
861 Advanced Compact IC / Instructions for Use 8.861.1033
1
1 Introduction
1.1 Instrument description
The 861 Advanced Compact IC is a PC-controlled system for ion
chromatographic analyses. The three following versions are available:
• 2.861.0010 without suppressor
• 2.861.0020 with suppressor module «MSM II»
• 2.861.0040 with suppressor module «MSM II»
and 853 CO
2
Suppressor (MCS)
The extremely compact housing of the 861 Advanced Compact IC con-
tains everything needed to carry out ion chromatography at the highest
quality level:
• Injection valve – for individual injections or for use with a sample
changer such as the Metrohm 838 Advanced Sample Processor
• High-pressure pump – extremely low-pulsation double piston
pump with a flow range from 0.2 … 2.5 mL/min and a maximum
pressure of 35 MPa (350 bar)
• Pulsation dampener – even with low-level pressure variations the
pulsation dampener reliably protects the column against damage
• Column chamber – the perfect insulation of the housing provides
not only thermally stable conditions for the separation column but
also shields the system against electromagnetic interference
• Columns – whether anion columns with or without suppression,
separation columns for cations or organic acids – the 861 Ad-
vanced Compact IC can accommodate them all
• Suppressor module – the Metrohm suppressor module (MSM) is
already integrated in the versions 2.861.0020 and 2.861.0040 –
pressure-resistant, with fully automatic regeneration, highest per-
formance and optimal reproducibility
• Peristaltic pump – integrated two-channel peristaltic pump with a
flow rate of 0.4 … 0.5 mL/min for regeneration and rinsing of the
suppressor module «MSM II» built into the versions 2.861.0020 and
2.861.0040.
• Detector – conductivity detector with outstanding temperature
stability. The detector temperature varies by less than 0.01°C and
can be optimally adapted to the ambient conditions.
• 853 CO
2
Suppressor – in Version 2.861.0040 the 853 CO
2
Sup-
pressor (MCS) is built in downline from the suppressor module
«MSM II». The·853 CO
2
Suppressor (MCS) removes the CO
2
from
the eluent. This reduces the background conductivity, improves de-
tection sensitivity and minimizes the injection and carbonate peak.