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Description: The CHNS content is determined using the Pregl-Dumas method where your sample is prepared, introduced into the combustion chamber and burned at high temperature 925F under pure oxygen. The resulting gas mixture and helium carrier gas pass through various reductive and catalytic zones to convert the gas mixture into CO2, H2O, N2, and SO2. The gasses are separated using gas chromatography and quantified with a thermal conductivity detector. Elemental analysis has
