H2S in Liquids Analyzer

The only dependable H2S in Liquids Analyzer proven by hundreds of world-wide installations with references from major oil & gas producers

Model: 205


  • Conformity to ASTM Methods
  • Specific to H2S Only
  • Accurate and Continuous Analysis
  • Quantitative Measurement in PPB, PPM & Percent Levels
  • Push Button Validation
  • Proven Reliability
  • Normal Calibrations Not Required
  • Fast Response Time
  • Remote control & monitoring: Remotely monitor and control the analyzer using PC with optional communications software. Connect wirelessly with 3G/4G
  • Hazardous area classifications: Division 1 and 2 (Zone 1 and 2), ATEX and IECEx certificates may be available (added cost)

Product Description

H2S in Liquids Analyzer: The ability to analytically quantify H2S in liquid phase such as naphtha, water, crude oil (light, medium and heavy), condensate and gasoline is enhanced with the Sample Transfer Stripper, exclusive KECO Membrane Technology and rateometric-colorimetric detection technology offered by KECO.

This principle of operation is described in various ASTM methods including D4084-82, D4468-85, and D4045-81.

The most effective process of measuring H2S in liquid samples requires the H2S to be representatively separated from the liquid for measurement in the gas phase.

The problematic and complicated “headspace” stripping column, which often suffers from liquid carry-over, is not required for this separation. KECO utilizes the state-of-the-art Sample Transfer Stripper (STS) with exclusive KECO Membrane Technologies to efficiently and reliably separate the H2S from the liquid sample.

The STS is an extremely simple device that provides an ultra-clean and dry sample to the detector for analysis. The STS uses 90% fewer parts than the complicated “headspace” stripping column method. This results in radically reduced maintenance requirements when compared to the headspace stripping column and also enhances analytical reliability. KECO is established as the world-wide leader in H2S in liquids analysis due to the many benefits of these exclusive technologies.

The principle of operation is based on a continuous, free-flowing liquid sample into the heated Sample Transfer Stripper (STS) unit which separates the H2S from the liquid sample, based in part on Henry’s Law. H2S free carrier air then sweeps the H2S gas to the H2S specific detector for quantitative analysis in ppb, ppm, or percent levels.

The analyzer does not require zero or span field calibrations.

The detection technology is based on chemically specific density changes. The advanced rateometric-colorimetric tape detector utilized in our analyzers is the only detection method that is absolutely specific to H2S and does not require calibrations in the field. As few as 3-6 tape changes per year are required.

Optical illumination and detection are integrated for maximum resolution accuracy. Economic payout is increased because of this automated and continuous process. Laboratory version is also available. Patents and Patents Pending based on letters that are available on request.

Read the success cases for this analyzer.


  • Measure H2S in light crude, medium crude and heavy crude oil
  • Measure H2S in condensate
  • Measure H2S in water
  • Measure H2S in gasoline & diesel
  • Measure H2S in naphtha
  • Measure H2S in amine

Get Quick Quote

Get Quick Quote

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