828 IC Dual Suppressor by Metrohm AG

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[View page 1] 828 ic dual suppressor opens up new applications for ion chromatography and offers decisive advantages · minimal background conductivity thanks to chemical suppression and suppression of co2 · minimal interference as both injection peak water dip and system peak become very small · step ahead in gradient ic with carbonate-hydrogen carbonate eluents · no limitation to hydroxide eluents

[View page 2] one plus one equals three with the 828 ic dual suppressor metrohm introduces a new suppressor generation in addition to the usual chemical suppression which eliminates the carbonate-hydrogen carbonate background the new suppressor has an additional suppression stage that removes the co2 produced to reduce the background conductivity even further this increases the peak areas in the ppm range and above by approximately 30 at the same time the areas of the injection peak water dip and the system peak diminish considerably this means improved detection of the anions that elute very early and of those situated around the system peak retention time of hco3­/co32­ the new formula in gradient ic 1+1=3 when purchasing an 828 ic dual suppressor and adding it to your modular metrohm ic system you have at your disposal · a chemical suppressor · a co2 suppressor · an electronic suppressor this means that your system now covers the whole spectrum of ion chromatography you can now determine anions

[View page 3] gradients from 88 to 18 minutes up to now the use of gradients was essentially restricted to hydroxide eluents as the change in co2 concentration caused a marked rise of the base line when carbonate-hydrogen carbonate eluents were used however hydroxide is an extremely weak eluent this means that very high alkali concentrations which are as such undesirable may have to be applied to achieve the desired separations the continuous operation of the 828 ic dual suppressor facilitates the use of gradient systems the h cations required for anion suppression are generated electrochemically as the 828 ic dual suppressor is also able to eliminate co2 it opens up an entirely new application field the flexible and highly efficient carbonate-hydrogen carbonate system can be used without any restrictions the injection and carbonate peaks are reduced to the absolute minimum moderate concentrations are applied which has a beneficial effect on the ic components used and lowers the operating costs of y

[View page 4] ordering information 2.828.0010 ic dual suppressor 6.2837.000 co2 absorber cartridge subject to modifications ­ printed in switzerland by metrohm ltd ch-9101 herisau ­ 8.828.6003 ­ 2002-05