CO2 suppressor used sequentially with suppressor module, removes both carbonate from the sample as well as CO2 formed during the suppressor reaction to virtually eliminate the injection peak
For many years Metrohm has recognised the flexibility that running with a carbonate mobile phase for anion analysis offers ion chromatography (IC) users, without the need to use concentrated hydroxide based eluents that can cause corrosion problems over a relatively short period of time.
The 853 Metrohm CO2 Suppressor, MCS, used sequentially with the Metrohm Suppressor Module MSM, removes both carbonate from the sample as well as any CO2 formed during the suppressor reaction to virtually eliminate the injection peak while allowing larger peak areas of the anions of interest.
In addition the interfering carbonate peak is effectively removed.
The CO2 suppressor is installed between the MSM and conductivity detector and can be fitted to existing Metrohm compact, modular, advanced and online systems to enhance the existing IC technology to sequential suppression.
Sequential suppression with the 853 Metrohm CO2 suppressor offers 50% larger peak areas, almost no injection peak, almost no carbonate peak, no interference - even at high carbonate concentrations, excellent linearity of calibration with carbonate eluents, extremely low background conductivity at <1uS/cm, noise level of <2Ns/cm with sequential suppressor combination of MSM and MCS.
The very low background combined with larger peak areas significantly increase the detection limits and when an existing IC instrument is equipped with the MCS the detection limits for anions can be lowered by up to 50%, says Metrohm.
