Low-Level Sulphur Analyser

In Natural Gas and Biogas

Ultra-sensitive GC solutions for trace sulphur analysis down to ppb and sub-ppb levels,
delivering high selectivity, excellent linearity, and full compliance with international standards.

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High-Precision Low-Level Sulphur Analysis

Sulphur compounds such as H₂S, COS, mercaptans and thiophenes are highly corrosive, toxic, and harmful to downstream catalysts and processes. Accurate detection at very low concentration levels is therefore critical across gas, liquid, and liquefied hydrocarbon streams.

The GAS Low-Level Sulphur Analyser provides a flexible, high-performance solution for sulphur component analysis using proven GC technology combined with FPD, PFPD, SCD, or GC-MS (AEI) detection. Depending on the required sensitivity, selectivity, and matrix, the analyser can be configured to achieve detection limits from ppm down to <1 ppb, while maintaining excellent repeatability and linearity over multiple decades.

All systems are designed for reliable long-term operation and full compliance with international standards including ASTM, ISO, GPA, UOP, DIN, and EN methods.

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Applications

  • Supported methods:
    ASTM D6228, D5303, D5504, D3328, D4735, D5623,  D7011, UOP791, ISO 19739, ISO 21087
  • Trace Sulphur Analysis in Natural Gas and Fuel Gases
    Detect sulphur components at ppb levels to protect catalysts,pipelines, and downstream processes.
  • Sulphur Determination in Natural Gas and Biogas
    Analyse volatile sulphur components using GSV (Gas Sampling Valve).
  • Olefin Feedstock Quality Control
    Sulfur compounds in natural gas and biogas must be analysed because they are toxic, corrosive, catalyst-poisoning contaminants that can damage equipment, increase emissions, and prevent compliance with gas quality specifications.
  • Laboratory and Regulatory Compliance Testing
    Perform validated sulphur analysis according to international standaards.

Benefits

  • Flexible Detector Configurations
    Choose FPD, PFPD, SCD, or MS depending on sensitivity and cost requirements – or combine detectors in a single system.
  • Ultra-Low Detection Limits
    Achieve sulphur detection down to <1 ppb with GC-MS (AEI) for the most demanding applications.
  • High Selectivity and Linearity
    Excellent equimolar response and linearity over up to four decades, even in complex hydrocarbon matrices.
  • Automated Calibration and Stable Results
  • Optional Automatic Calibration Unit (ACU) with permeation tubes ensures accurate, reproducible multi-level calibration.
  • Modular and Scalable Design
    Available as a standalone analyser or combined with NGA, RGA, or other GAS analysers for an efficient footprint and lower total cost of ownership.

Questions or get a quote?

Interested in our Low Level Sulphur Analyser? Contact us today for a
personalised quote tailored to your application needs.

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Downloads – Low-Level Sulphur Analyser

Access product notes and application notes

 

Low-Level Sulphur Analyser FPD/PFPD based on Trace GC1600 or CompactGC4.0 Product Note

Explore flexible GC configurations for low-level sulphur analysis in natural gas with either FPD or PFPD detection.

Download Product Note

Low-Level Sulphur Analyser FPD/PFPD based on Trace GC1600 or CompactGC4.0 Application Note

Explore flexible GC configurations for low-level sulphur analysis in natural gas with either FPD or PFPD detection.

Download Application Note

Expertise you can rely on

With over 50 years of experience in gas chromatography, GAS delivers advanced analytical solutions for the most challenging sulphur measurements. The Low-Level Sulphur Analyser combines sensitivity, robustness, and configurability to support catalyst protection, product quality assurance, and regulatory compliance across the energy and petrochemical industries. Contact our experts to define the optimal configuration for your application.

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