Metrohm has launched a new version of the 844 UV/VIS compact ion chromatograph (IC) in stainless steel complete with a column oven.
The device is suitable 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 using a phosphate/methanol mobile phase.
One tablet is solved in a known quantity of ultrapure water and run against a previously recorded caffeine calibration curve.
The caffeine is detected on the Prontosil C18 column in less than six minutes at a wavelength of 280nm using the IC Net controlling software.
