Oxygen and Nitrogen Analyzer

The Oxygen and Nitrogen Analyzer is an essential tool for high-precision elemental analysis in materials science, metallurgy, and industrial quality control. By accurately measuring trace oxygen and nitrogen levels in metals, ceramics, and alloys, these instruments ensure that material properties such as strength, ductility, and corrosion resistance meet demanding standards. Using inert gas fusion technology, modern analyzers provide rapid, reliable measurements down to parts-per-million (ppm) concentrations. Whether used for steel purity checks, titanium quality assessment, or high-purity electronic materials testing, an Oxygen and Nitrogen Analyzer supports consistent product performance and compliance in laboratories worldwide.

What Is an Oxygen and Nitrogen Analyzer?

An Oxygen and Nitrogen Analyzer is a precision analytical instrument designed to determine oxygen (O) and nitrogen (N) concentrations in solid inorganic materials. It operates primarily on the principle of inert gas fusion, where the sample is melted in a graphite crucible at temperatures up to 3000°C. The evolved gases — CO/CO₂ from oxygen and N₂ from nitrogen — are quantified using infrared and thermal conductivity detectors. This process enables laboratories to detect elements at trace levels, ensuring optimal purity and performance of critical materials such as steels, titanium alloys, and advanced ceramics.

Devices in This Category

Oxygen and Nitrogen Analyzer (ON Analyzer)
Oxygen Nitrogen Hydrogen Analyzer (ONH Analyzer)
Inert Gas Fusion Analyzer
Elemental Analyzer for Solid Materials
Trace Gas Fusion Analysis System
High-Purity Material Analyzer

Technical Features and Specifications

FeatureDescription
Detection RangeFrom parts per million (ppm) to percentage levels
Applicable MaterialsSteel, copper, titanium, ceramics, and advanced alloys
Detection MethodInfrared (Oxygen) and Thermal Conductivity (Nitrogen)
Sample MassTypically 0.1–1.0 g
Analysis Time2–4 minutes per sample
Carrier GasesHelium or Argon
AutomationOptional autosampler and PC-based control
CalibrationCertified reference materials for trace accuracy

Benefits

High analytical precision for trace oxygen and nitrogen detection
Rapid results with minimal sample preparation
Excellent reproducibility across a wide range of materials
Automatable for batch and high-throughput workflows
Compliant with international analytical standards

Applications and Tests

🔬 Molecular Biology

Purity verification of metallic substrates used in bioinstrumentationTrace gas contamination control in analytical tools
🧪 Clinical Diagnostics

Validation of metallic components in medical devicesQuality assurance of instrument-grade alloys
🏭 Industrial & Food Testing

Determination of oxygen and nitrogen in steel and copperMonitoring nitrogen embrittlement in alloysProcess control for metallurgical production
🌱 Environmental & Agricultural Labs

Analysis of ceramic filters and catalystsResearch on soil and mineral oxygen-nitrogen content

Oxygen and Nitrogen Analyzer vs. Combustion Analyzer

AspectOxygen and Nitrogen AnalyzerCombustion Analyzer
Target ElementsOxygen, Nitrogen (sometimes Hydrogen)Carbon, Sulfur
Detection PrincipleInert Gas Fusion with IR/TCD detectionCombustion with IR/UV detection
Sample TypeMetals, ceramics, alloysOrganic and inorganic materials
Carrier GasHelium or ArgonOxygen or Air
Best Use CaseTrace O/N analysis in high-purity materialsCarbon/sulfur quantification in steel and coal

Expert Tips for Choosing the Right Oxygen and Nitrogen Analyzer

Assess the required detection range — from ppm to percentage levels.
Confirm compatibility with target materials such as steel, titanium, or ceramics.
Check for automation options like autosamplers for efficiency.
Evaluate software capabilities for data export and quality reporting.
Ensure reliable calibration, technical support, and after-sales service.

Maintenance Best Practices

Clean the furnace and gas lines regularly to avoid contamination.
Replace graphite crucibles and filters as per manufacturer guidance.
Use only high-purity helium or argon carrier gases.
Perform frequent calibration with certified reference materials.
Inspect seals, detectors, and electronics for wear and stability.

FAQ

Q: How accurate is an Oxygen and Nitrogen Analyzer?
A: High-end models achieve accuracy down to a few ppm, making them suitable for trace element analysis in high-purity materials.

Q: Can these analyzers detect hydrogen as well?
A: Some ONH analyzers include additional detection channels for hydrogen, providing full gas analysis in one instrument.

Q: What gases are used in inert gas fusion analysis?
A: Helium or argon is typically used as the carrier gas due to their inert properties and stability at high temperatures.

Q: How often should calibration be performed?
A: Calibration should be done daily or before each analytical sequence using certified reference materials to ensure consistent accuracy.

Compliance & Support

Oxygen and Nitrogen Analyzers are typically compliant with CE, ISO, and ASTM analytical standards for elemental testing. AELAB provides full calibration support, documentation, and validation services to help laboratories meet industry and regulatory requirements for accurate and traceable elemental analysis.