Combustion Additive Summary

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Combustion Additive Summary

Turn Around Time 1 Day

Combustion Additive Summary

Sample Requirements 1 - 2 mg

Combustion Additive Summary

Supported Elements This technique is suitable for a reporting limit of >0.1% for carbon, hydrogen and nitrogen.

Combustion Additive Summary

Accuracy + 0.3-0.4% Absolute

Combustion Additive Summary

Compatible Sample Types Solids, Liquids, Oils

Combustion Additive Summary

Incompatible Sample Types Gases

Combustion Additive Summary

Interferences High levels of fluorine or inorganics
Note:
It is recommended that samples, which contain high amounts of fluorine or inorganics, should be analyzed using optimum combustion conditions.

Combustion Additive Summary

Sample Preparations Approximately 2 mg of sample is weighed accurately into a tin sample boat. A combustion additive of tungstic anhydride or tin powder is added.

Combustion Additive Summary

Method Summary Carbon, Hydrogen, Nitrogen are determined using a Perkin-Elmer 2400 Elemental Analyzer. This analyzer uses combustion to convert the sample elements to simple gases, i.e., CO2, H2O, N2. Upon entering the analyzer, the sample is combusted in a pure oxygen environment. The product gases are separated under steady state conditions, and measured as a function of thermal conductivity. The instrument is calibrated prior to sample analysis with an NIST traceable organic standard. System suitability is confirmed by analyzing an NIST traceable organic standard. The standard must check to within + 0.1% of its theoretical value. All sample analyses are bracketed with a standard that must be within + 0.3% of its theoretical value.