CHN

Combustion/Optimum

Price $36

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CHN Optimum Combustion Summary

Turn Around Time 1-3 Days

CHN Optimum Combustion Summary

Sample Requirements 1 - 2 mg

CHN Optimum Combustion Summary

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

CHN Optimum Combustion Summary

Accuracy + 0.3-0.4% Absolute

CHN Optimum Combustion Summary

Compatible Sample Types Solids, Liquids, Oils

CHN Optimum Combustion Summary

Incompatible Sample Types Gases

CHN Optimum Combustion Summary

Interferences N/A

CHN Optimum Combustion 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.

CHN Optimum Combustion Summary

Method Summary The combustion conditions are optimized by increasing the oxygen purge and the combustion time. 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.