OCMA-500 Oil Content Analyzer


The OCMA-500 Oil Content Analyzer has been redesigned for even better operability, maintaining its user-friendly features. After injecting the sample, all you have to do is press a button to get the monitoring operation done quickly, from oil extraction to sample measurement and draining. This machine is easy for anyone to use.The OCMA-500 cuts solvent consumption by 20% compared with our previous products, reducing environmental impact. It also reduces the running costs.

<How to measure> 


  • Fully automated one-touch operation, from oil extraction to sample measurement and draining

  • Reduced environmental impact and running costs
    (20% cut in solvent consumption)

  •  With no need for a solvent evaporation process, the OCMA-500 offers easy operation, and can detect even oils with low boiling points.

Improvement of operability

  • Backlit extraction tank (patent applied for)
    The extraction tank is equipped with LEDs. Illuminating the tank makes it easy to check the phase separation between sample and solvent.
    Before extraction                 After extraction
    *The color depends on the sample.

  • Color graphic LCD
    The OCMA-500 comes equipped with a 3.5-in color graphic LCD. Menus and measurement data can be clearly seen

  • USB flash memory drive port
    Storing data on USB flash memories enables easy data management on PCs.

  • Unit conversion
    Inputting measurement conditions can change the units displayed (mg/L, mg/kg, mg/g, and mg/PC) as the user needs.

Various Application

  • 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

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

Manufactured by HORIBA Advanced Techno


Measurement principle:

Solvent extraction, NDIR
analysis (Infrared spectroscopy)

Measurement range:

0mg/l ~ 200mg/l dynamic ranging


0 to 99.9 mg/L; 0.1 mg/L
100 to 200 mg/L; 1 mg/L


0 to 9.9 mg/L; ± 0.2 mg/L ± 1 digit
10.0 to 99.9 mg/L; ± 2 mg/L ± 1 digit
100 to 200 mg/L; ± 4 mg/L ± 1 digit
*For standard liquids 

Display Method

3.5 inches, 320×240 dots
Backlight Colour graphic LCD

Calibration Method

Zero, Span Calibration

Extraction Solvent

S-316 solvent

Amount of test sample required

Sample water : Solvent = 2 : 1 

Amount of extraction solvent required

8 mL

Extraction Method

Built-in extractor

Ambient Operationg Temperature

0 to 40 ℃ (non condensation)

Power supply

AC 100V to 240V ±10%, 50/60 Hz

Power consumption

AC 100V:Approx.60VA
AC 240V: Approx.90VA

External Dimensions

200(W)×313(D)×342(H) mm


Approx. 7 kg

External Output

Output to an USB memory stick


300-item data memory
Stabilized measurement value display
Self error determination