Fast and Direct Sodium Determination in Food
29 May 2019
In this video, Metrohm presents a direct thermometric titration method for quantifying sodium in food samples. This is a robust method that can be fully automated to cope with samples of challenging food matrices and establish accurate results in less than two minutes. Thermometric titration and its application to food samples is described in detail in this Metrohm white paper.
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Metrohm AG
Our many years of experience in electrochemical analysis form the basis of the modern instrument program. Only companies that deal with the entire field of ion analysis can provide you with optimum guidance for your specific analytical problem.
Of all suppliers offering electrochemical analysis instruments, only Metrohm is proficient in the fields of titration, voltammetry and ion chromatography, as well as in the techniques of pH, ion and conductivity measurement - while also being engaged in the development of a wide range of sensors for all these methods.
Our application chemists in the laboratory and the field are thus in a position to provide you with the best possible guidance. Only the correct method is good enough for your application! Competent advice, trustworthy service and the very highest quality have made us the market leader. Metrohm specialists the world over are working to ensure that this remains the case - for your benefit. Metrohm has taken a new direction in designing the user interface with the aim of providing the user with a clear arrangement for even complex applications.
Ion analysis - really easy with Metrohm...
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859 Titrotherm
Metrohm AGThermometric titration is a very versatile determination method and an ideal complement to potentiometric titration. In principle it is suitable for any reaction that produces a sufficiently large temperature change in the sample solution. It is particularly suitable for applications for which no suitable potentiometric sensor is available, for which no suitable reference electrode is available, in which the sample affects the indicator electrode or destroys it, for which no solvent is available that is suitable for potentiometry. The 859 Titrotherm combines innovative sensor technology with Metrohm's titration know-how. The temperature sensor based on semiconductor technology (thermistor), has a short response time of 0.3 s and a high resolution of 10-5 K. This makes the Thermoprobe the ideal sensor for thermometric titration, as it can follow any change in temperature quickly and accurately. Metrohm's Dosino technology has defined a new standard for volumetric titration. The Dosing Unit with its drive motor is mounted on the reagent bottle and thus guarantees maximum precision with minimum space requirements. The clearly laid out Titrotherm software allows adaptation of the screen view to the particular method parameters and thus provides rapid access to important commands or parameters. The endpoints are determined by calculating the first and second derivatives of the titration curve; by means of additional optimization parameters, the reproducibility can be improved even further.
