Elementar vario EL cube CHNS Elemental Analyzer
Carbon, hydrogen, nitrogen and sulfur content by combustion analysis.
A CHNS analyzer determines what fraction of a sample, by mass, is carbon, hydrogen, nitrogen and sulfur. A few milligrams of sample are weighed into a tin capsule and burned in pure oxygen at over 1,000 °C; the resulting gases are separated and measured with a thermal conductivity detector.
Because every pure compound has a fixed elemental composition, comparing the measured percentages with the theoretical formula is a simple, independent check on identity and purity. For peptides, the nitrogen result can also be used to estimate peptide content alongside HPLC.
Applications
- CHNS composition of peptides and synthetic compounds versus theoretical formula
- Nitrogen-based estimation of peptide or protein content
- Purity confirmation of organic chemicals and reference materials
- Carbon, nitrogen and sulfur content of soils, plant material and feeds
Typical Sample Types
Dry solids and viscous liquids. Typically 1–5 mg for pure compounds; larger amounts for heterogeneous materials.
Key Specifications
| Technique | Dynamic flash combustion with thermal conductivity detection |
|---|---|
| Elements | C, H, N and S (modes for CHN, CN, N and S) |
| Combustion temperature | Up to 1,200 °C |
| Sample weight | Microgram to several hundred milligram range, matrix dependent |
| Output | Mass % of each element with comparison to theoretical values |
Specifications are provided for general reference. Method performance depends on sample matrix and project requirements.
To discuss a project that uses the Elementar vario EL cube CHNS Elemental Analyzer, please call (314) 652-3448 or submit a project quote request.
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