«MCS» – 853 Metrohm CO2 Suppressor: The «MCS» removes both carbonate from the sample as well as any CO2 formed during the suppression reaction, virtually eliminating the injection peak while allowing the peak areas of the analyte ions to be considerably larger. In addition, the interfering carbonate peak is effectively removed. The principle is based on the gas permeability of Teflon AF™. The special system arrangement with built-in vacuum cell, Teflon AF™ membrane and CO2 absorber is controlled e.g. from the 861 Advanced Compact IC.
The «MCS» Metrohm CO2 Suppressor is available integrated into the 861 Advanced Compact IC (Version 2.861.0040) or as a stand-alone suppressor. It can be used to easily retrofit existing Compact, Modular, Advanced and Online Metrohm IC systems. The CO2 Suppressor is installed between the «MSM II» and conductivity detector. The vacuum pump of the «MCS» is controlled by remote commands and is equipped with an external power supply.
The 853 Metrohm CO2 Suppressor carries following advantages:
- 20 to 50% larger peak areas
- No injection peak
- No carbonate peak
- No interferences, even at high carbonate concentrations
- Excellent linearity of calibration with carbonate eluents
- Extremely low background conductivity at <1 µS/cm
- Noise level <0.2 nS/cm with sequential suppressor combination «MSM II» and «MCS»
Very low background conductivity – combined with larger peak areas – significantly improves detection limits. When an existing IC instrument is equipped with the «MCS» the detection limits can be lowered by up to 50%.