h2s-in-condensate-analyzerThe effective process for measuring H2S in crude oil and other liquids involves representatively stripping the H2S vapor from the liquid for precise measurement in the gas phase. 


The Model 205 H2S in Crude Oil Analyzer utilizes the state-of-the-art Sample Transfer Stripper (STS) with exclusive ASI Membrane Technologies to efficiently and reliably separate the H2S from the liquid sample for measurement in the gas phase. The STS is a very 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 method and also enhances analytical reliability.

The principle of operation is based on a continuous flowing liquid sample into the heated STS unit which separates the liquids from the H2S gas sample, based in part on Henry’s Law. Carrier gas/air then sweeps the H2S sample to the H2S specific detector for quantitative analysis in ppb, ppm, or percent levels. The analyzer does not require zero or span field calibrations even when faced with process changes.



  • Specific to H2S only. No false positives, ever
  • No field calibrations required
  • Accurate and continuous analysis
  • Quantitative measurement in PPB, PPM & percent LevelsHSLIQ
  • Proven reliability
  • Conformity to ASTM methods
  • Fast response time
  • Long tape life: As few as 4 tape changes per year
  • Remote & Web based monitoring/control of analyzer
  • ATEX and IECEx certificates available



  • Crude Oil (light/medium/heavy)
  • Dirty/clean Water
  • Diesel
  • Fuel Oil
  • Drilling Fluid
  • Condensate
  • Quality control
  • Corrosion control
  • Transportation safety
  • Loading/unloading of trucks, rail cars, pipelines, etc.
  • Compliance


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