Oil Content Analyzer

OCMA-500 to measure concentration of oil contained in drainage and environmental water.
After injecting the water sample and solvent, all you have to do is press the start button,and the system will automatically conduct the monitoring operation from oil extraction to sample measurement and draining. With no more troublesome operations like opening/closing the drainage valve, monitoring is speeded up.In addition, the color graphic LCD and the backlit extraction tank have improved operability.


Division: Water Pollution
Manufacturing Company: HORIBA Advanced Techno Co., Ltd.

How to measure:

OCMA-500 Oil Content Analyzer - Measurement


  • Backlit extraction tank

The extraction tank is equipped with LEDs. Illuminating the tank makes it easy to check the phase separation between sample and solvent and set the extraction time.


Before extraction                 After extraction
*The color depends on the sample.

  • Reduction of environmental impact and running cost

The OCMA-500 cuts solvent consumption by 20% compared with our previous products, reducing environmental impact. It also reduces the running cost.

  • Measurement mode

Measurement can be switched automatically or manually.

【Auto mode】
Stirring, measurement and draining are automatically conducted after injection of the sample.

【Manual mode】
You can conduct measurement operation at any timing while checking the extraction state.

■Example of manual mode

Fully used in Various Applications

Factory dranage


For monitoring final discharge water

Ballast water, Bilge


For monitorng discharge from ships

Vehicle mentenance site and gas station

For monitoring water quality in sorrounding areas



Water quality survay based on environmental standard.
For monitoring final discharge from petroleum refinery plant.
For oil dispersion reserch at time of an accident.

Product nameOil content analyzer
Measurement methodSolvent extraction - non-dispersive infrared absorption analysis method
Measured objectsSubstances extracted from sample water into solvent and having infrared absorption near a wavelength from 3.4 μm to 3.5 μm
Measurement range0 mg/L to 200 mg/L
ResolutionFor mg/L 0 to 99.9: 0.1, 100 to 200: 1
For mg/g, mg/kg, mg/PC 0 to 9.99: 0.1, 10.0 to 99.9: 0.1, 100 to 200: 1
Repeatability0 mg/L to 9.9 mg/L: ±0.3 mg/L.
10.0 mg/L to 99.9 mg/L: ±2.1 mg/L.
100 mg/L to 200 mg/L: ±5 mg/L. * For standard liquids
Display method3.5 inches, 320×240 dots, Backlight Color graphic LCD
Calibration methodZero, span calibration
Amount of test sample requiredSample water : Solvent = 2:1
Extraction solventS-316
Amount of extraction solvent required8 mL
Extraction methodBuilt-in extractor
Ambient operating temperature0°C to 40°C (no condensation)
Power supplyAC 100 V to 240 V ±10%, 50/60 Hz
Power consumptionAC 100 V: Approx. 60 VA, AC 240 V: Approx. 90 VA
External dimensions342 (H) × 200 (W) × 313 (D) mm
MassApprox. 7 kg
External outputOutput to a USB memory stick
  • 300-item data memory
  • Self error determination
  • Stabilized measurement value display
  • Clock
  • Compliant with ASTM D7066-4

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