CHNS/O Analyzer

The ELEMENTRAC CS-i elemental analyzer measures carbon and sulfur concentrations in solid samples by melting them in a pure oxygen atmosphere within an induction furnace. Sulfur oxidizes to SO₂ and carbon to CO and CO₂. A lance directs oxygen precisely into the crucible to ensure complete combustion and prevent sample loss, especially for dusty materials. Typical sample sizes range from 50 to 1000 mg, and accelerators like tungsten are added. Sample shape does not affect results. The process is automated via ELEMENTS software, and results are available within 45–60 seconds. The ELEMENTRAC CS-i elemental analyzer measures carbon and sulfur concentrations in solid samples by melting them in a pure oxygen atmosphere within an induction furnace. Sulfur oxidizes to SO₂ and carbon to CO and CO₂. A lance directs oxygen precisely into the crucible to ensure complete combustion and prevent sample loss, especially for dusty materials. Typical sample sizes range from 50 to 1000 mg, and accelerators like tungsten are added. Sample shape does not affect results. The process is automated via ELEMENTS software, and results are available within 45–60 seconds.

By Allschoolabs · August 2, 2025 · 78 views

The elemental analyzer ELEMENTRAC CS-i was used to measures the carbon and sulfur concentration In the induction furnace of the elemental analyzer the sample is melted in a pure oxygen atmosphere, causing sulfur to react to sulfur dioxide (SO2) and carbon to a mixture of carbon monoxide (CO) and carbon dioxide (CO2).Individual control of the oxygen supply during inductive combustionA lance flushes the entire oxygen flow to the center of the crucible to ensure complete oxidation of the carbon and sulfur contained in the sample (solid samples)Oxygen flow is supplied through the combustion chamber to avoid swirling and loss of sample material (dusty samples)Sample volumes of 50 mg to 1000 mg are typical for C/S analysis. The sample is weighed in a ceramic crucible and accelerators like tungsten are added. The geometry of the sample (e. g. wire, powder, pin etc.) is not essential for a reliable analysis. The ceramic crucible is then placed on the pedestal and the analysis is started via the ELEMENTS software. The software controls all subsequent steps like combustion and evaluation.45-60 seconds after the analysis has started, the measured carbon and sulfur concentrations are available for export as a report