With the analysis system of the LetzTOC measuring device the total organic carbon concentration of a sample is measured. All regulations of the European-, the American- and the Japanese pharmacopoeia are followed and fulfilled. Instead of using conductivity sensors the CO2 which is generated during the UV-oxidation process is determined by an infra-red detector. The analyser contains of 2 online ports and is able to measure cold and hot water samples. Letzner supplies certified solutions to perform the calibration and the system suitability test which don’t need to be cooled during storage.