Leaders in manufacturing liquid & gas analyzers

For over 25 years Analytical Systems International Keco (ASI KECO) has provided field proven, continuous on-line and laboratory analyzers for refineries, chemical and gas processing plants and other industries world wide. These highly dependable and trouble-free products include H2S in non volatile liquids (water, crude, amine, diesel, gasoline & naphtha), Hydrocarbon VOC in Water analyzers, Oil in Water monitors and H2S, CO2 and Total Sulfur gas/LPG analyzers. ASI KECO also provides full support for Houston Atlas Tracor analyzers including detectcassette and H2S sensing tapes for most H2S and Total Sulfur analyzers.

Hydrogen Sulfide (H2S) in Liquids Analyzers
Measure H2S in Crude, Water, Diesel, Amine, Naphtha, Gasoline

H2S Liquid Analyzer
Calibration rarely required

Interference free detection

Automatic Zero - No 'drift'

Automatic Validation
Hydrocarbon (VOC) in Water Analyzer
Wastewater, Cooling Water, Produced Water, Run Off Water & more

Hydrocarbon VOC in Water Analyzer Monitor Calibration rarely required

Accurate to PPB levels & up

Exclusive Membrane Technology

Automatic Validation


Oil in Water Monitor
Produced Water, Cooling Water, Effluent Discharge,
Bilge Water, Sea Water, Runoff water, & more


Oil in Water Monitor Analyzer
Calibration rarely required

Accurate to PPB levels & up

Exclusive Membrane Technology

Automatic Validation
Hydrogen Sulfide (H2S) Gas Analyzers
ASTM Tape or Electrochemical Method

Interference free detection

Automatic Zero - No 'drift'

Automatic calibration

Total Sulfur Gas Analyzers
ASTM Tape Method / Reductive Method

Total Sulfur Analyzer
Interference free detection

Accurate to PPB levels & up

Automatic Zero - No 'drift'
Carbon Dioxide (CO2) Gas Analyzer
Dual Beam Infrared Technology

Carbon Dioxide CO2 Analyzer
Continuous on-line measurement

Sensor life over 4 years

No moving parts