Low-Level Sulphur Analyser

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 Liquid and Liquefied Hydrocarbons
    Analyse LPG, propylene, diesel, and light petroleum liquids using GSV, LSV, SSL, or PTV injection techniques.
  • Olefin Feedstock Quality Control
    Measure ultra-low levels of H₂S, COS (including arsine and phosphine) in ethylene and propylene to prevent catalyst poisoning in polymer production.
  • Refinery and Petrochemical Process Monitoring
    Monitor sulphur impurities in refinery gas, hydrogen streams, and intermediate process gases.
  • 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 brochures, technical datasheets, application notes, and software updates for Low Level Sulphur Analysers.

Low-Level Sulphur Analyser FPD/PFPD based on Trac GC 1600

Explore flexible GC configurations for low-level sulphur analysis in gaseous and liquid samples based on Trace GC 1600 with either FPD or PFPD detection.

Download Datasheet

Low-Level Sulphur Analyser using CompactGC and PFPD

Explore flexible GC configurations for low-level sulphur analysis in gaseous samples based on CompactGC4.0 with PFPD detection.

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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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