• Rapid Nitrogen Determination according to Dumas using the Gerhardt Dumatherm Nitrogen / Protein Analyser

    DUMATHERM, is a highly efficient, precise and fast alternative to Kjeldahl for the determination of Nitrogen. For most sample matrices, it is a real alternative to Kjeldahl. In the Dumas method, a sample is burned in an oxygen rich atmosphere at high temperature and the resulting gases analysed.

    The main product features are:

    • Only about 30 minutes start-up time when completely turned off or stand-by mode
    • Analytical results within 5 minutes for all standard sample matrices
    • Perfect results for samples with low nitrogen content thanks to helium technology and total gas analysis
    • Residue free combustion using acid-free and salt resistant catalysts without pyrolysis residues in the analytical system
    • Simple and total water separation based on condensation traps and a maintenance free gas dryer: also perfect for the liquid samples in food and feed analysis
    • Minimal maintenance required by lab technician as the construction as well as the parts used are extremely user friendly
    • Few consumables needed ensure fast and inexpensive maintenance (Reactors can be replaced during operation)

    During each measurement the total amount of nitrogen is analysed with a detection limit of 0.01 mg N absolute. The maximum detectable amount of nitrogen is 50 mg nitrogen from sample weights up to 1g.

    The Dumatherm system can be supplied with manual sample entry or a 40-position auto-sampler, which can be easily expanded to 80 or 120 positions. Loading of the auto-sampler is also possible during analysis. The manual sample entry system can be easily upgraded to an auto-sampler in the future.

    Dumatherm is entirely controlled and operated using the controlling software Dumatherm Manager. This software is capable of handling all parameters of the instrument and analysis, documentation function and system diagnosis.