Metrohm 850 Professional IC Anion MCS Prep 2 - Manual (Page 122)

6.13 Metrohm CO
2
suppressor (MCS)
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850 Professional IC – Anion – MCS – Prep 2
6.13 Metrohm CO
2
suppressor (MCS)
Material fluoropolymer
Resistance to sol-
vents No restriction (apart from PFC)
Vacuum
Working range Microprocessor-controlled / stabilized
Build-up time
after start < 30 s
Capillary volume 400 µL
Recommended
flow range 0.1…1.0 mL
6.14 Conductivity measuring system
Type ￭ Microprocessor-controlled Digital Signal Processing (DSP technol-
ogy)
￭ Intelligent detector with 6 reference chromatograms
Measuring range 0…15000 µS/cm single range
Noise < 0.1 nS at 1 µS/cm
Deviations from
the linearity < 1 % for conductivity values greater than 1…16 µS/cm (typical for
analyses with sequential suppression)
Drift < 0.2 nS/cm per hour
Measuring rate 10 measurements per second for optimum results without filtering
Resolution 0.0047 nS/cm
Baseline Noise < 0.2 nS/cm typical for sequential suppression
Conductivity
detector
Cell volume 0.8 µL
Cell constant ￭ Individual calibration data saved in the detector
￭ adjustable range: 13.0…21.0 /cm
Electrodes Ring-shaped electrodes made from stainless steel
Materials in
contact with
eluent Chemically inert PCTFE
Maximum oper-
ating pressure 5.0 MPa (50 bar)