What is a combustion analyzer?
Combustion analyzers, also called CHN analyzers, measure the concentration of elements in a sample. The term CHN stands for carbon, hydrogen, and nitrogen which are a few of the elements commonly measured on these machines.
How do combustion analyzers work?
CHN analyzers operate by combusting a sample in the presence of oxygen causing the individual elements to combine with oxygen and form gaseous byproducts and water vapor such as CO
2, NO, and H
2O. These products can then be separated via absorption/desorption or gas chromatography and analyzed. Common methods of analysis include thermal conductivity detectors, infrared detectors, and spectrometry.
Combustion analyzers are used in labs that specialize in food/agricultural, biology, chemistry, manufacturing, pharmaceutical, environmental, electronic production, and more.
What things should you consider when purchasing a combustion analyzer?
Which particular elements will need to be analyzed
Detection method
Ease of use
Speed of analysis
Operation software
Portability (whether the instrument will be used in the lab or in the field)
Sample weight that will be introduced
Whether organic or inorganic samples will be measured
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