New stainless steel version of Metrohm 844 UV/VIS Compact IC used to assay caffeine in over the counter tablets

07 May 2008

Metrohm has launched a new version of the 844 UV/VIS Compact Ion Chromatography (IC) in stainless steel complete with a column oven. The new device is especially suited as an alternative low cost and simplified way of assaying many pharmaceutical or food/beverage based products using photometric detection.

One such application is the analysis of caffeine in over the counter tablets. It can be performed isocratically simply using a phosphate/methanol mobile phase. Analysis of tablets was relatively simple; one tablet was solved in a known quantity of ultra pure water and run against a previously run caffeine calibration curve. The caffeine was detected on the ProntoSil C18 column in less than 6 minutes at a wavelength of 280 nm using the IC Net controlling software.

To learn more about this application and further details of the new 844 UV/VIS Compact IC in stainless steel please visit our website www.metrohm.com

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Metrohm AG

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