Oil concentration meter

Automatic measurement with a single switch.

One-touch operation with a single button press allows for ease of use by anybody. Can be used for a wide range of applications such as wastewater monitoring and component quality control.


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

Quick and easy measurement in approximately 3 minutes*1

Measurements can be made easily and quickly by simply pressing the start button. Compared to the n-hexane method, measurement times can be significantly reduced.
*Excluding time for activities such as warming, calibration, rinsing

Capable of measuring low-boiling point oil components

The n-hexane method requires the evaporation of the oil extraction solvent, which leads to volatilization of low boiling point oils (such as gasoline). The OCMA-500 series eliminates the need for an evaporation process, allowing for the prevention of volatilization in low-boiling point oil components.

Oil content can be displayed as a concentration (value)

Unlike the n-hexane method, which calculates concentration by measuring the weight of oil content, OCMA-500 can directly display oil concentration.
*Please contact us for inquiries regarding the types of oil that can be detected.

Environmental-friendly, safe, and cost-effective oil extraction solvents are in use

The domestic model OCMA-505-H/555-H uses solvent H-519 for oil extraction, while the international model OCMA-500/550 uses solvent S-316. Both H-519 and S-316 are not regulated under the Montreal Protocol (Ozone Layer Protection Act) and the PRTR system (Act on the Evaluation of Chemical Substances and Regulation of Their Manufacture, etc. (CSCL)). Furthermore, compared to the traditional solvent H-997, solvent H-519 has achieved similar regeneration efficiency to solvent S-316, allowing for a reduction in running costs.

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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