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18Julie Tilquin is the responsible lab technician for the fully automated Metrohm titration system.The determinationThe determination is carried out automatically. Thus, afterdegassing, the only manual task is placing the beverage samples onthe sample rack and filling the sample data table with the appropriatesample data. Automatically, 10 mL sample is pipetted to the externaltitration cell where some additions of auxiliary solutions take place.After calibrating of the electrode, the citric acid titration is per formed.Pipetting, measuring, titrating and cleaning of the equipment aredone fully automatically in one run.Data evaluationThe titration system is controlled completely by Metrohm‘swell-proven titration software tiamo. With the installed tiamomulti version, the results of different workplaces can be checked fromany office desk within only a few steps using the intuitive and wellarranged user interface. The database provides all necessary tools formanaging results, searching for them and grouping them together.Quick filters allow a fast search through thousands of determinations.Control charts provide a rapid overview of the chronologicalsequence of the results. tiamo is compliant with the demands ofFDA Regulation 21 CFR Part 11.Customer application report
19ConclusionThe European Quality Centre in Brussels has worked with thesystem since February 2005 and is extremely satisfied as all requirementsare fulfilled:• high throughput• fast and time-saving analysis• good accuracy and reproducibility• reliable system, that even provides unattended operationover night• rapid and competent support by Metrohm if neededAn enormous amount of various beverage samples can besucessfully prepared and analyzed with a fully automated customtailoredsolution from Metrohm. The citric acid concentration of thesamples can be monitored conveniently from the office desk.We would like to thank Julie Tilquin from Coca-Cola Services forher assistance in writing this article.Close-up of the specially-designed needle for the aspiration of even pulpysamples.INFORMATION | 2 | 2010-11
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Page 48: ImprintVolume 39, Issue 2ISSN 1424-

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