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Home  >>  Products  >>  pH & Conductivity  >>  OCMA 500 and 550

OCMA Series Oil Content Analyzer







Compact oil content analyzer OCMA Series. Operability is significantly improved while user-friendly features of the conventional products are maintained as they are. This machine is easy for anyone to use because all you have to do is press a button. This can be utilized across a wide variety of applications such as drain monitoring and quality control of components.

Easy and speedy measurement for approx. 3 minutes*
Measurement can be easily made in a short time only by pressing the start button. Measurement time can be significantly reduced in comparison with the n-hexane extraction method. *Excluding time for warming and calibration

1 minute - Put sample and solvent into OCMA
1 to 2 minutes - Start measurement by the start button
In less than 1 Minute - Read the measured value

*1 Shortest time. Measurement time depends on quality of sample. In case of OCMA-500. *2 Put extracted sample into the cell to set in case of OCMA-550.

Any oil with low boiling can be measured
The n-hexane extraction method needs to evaporate solvent and any oil with a low boiling point (toluene, gasoline, etc.) is evaporated along with solvent. The OCMA-500 series does not need to evaporate solvent, preventing evaporation of these kinds of oil.

What is the n-hexane extraction method? Testing method used to measure oil components. Because oil of a low boiling component such as gasoline or toluene is volatilized, an error may occur if they are included. It is necessary to take note of them when making evaluations.

Improvement of operability
  • Color graphic liquid crystal - It is easier to see menu and measurement results because a 3.5 inch color graphic (LCD) is employed.
  • USB data output port - It is easy to control data in a personal computer by saving data in a USB memory stick.
  • Unit conversion function - Indication unit (mg/L, mg/kg, mg/g, mg/PC) can be changed according to the purpose by inputting the measurement conditions.
  • Multi-language function - Japanese, English and Russian languages are available. Each language can be selected from the screen menu.

Unit: mm


Technical Data

Technical Data
  OCMA-500 OCMA-550
Measurement Method: Solvent extraction - non dispersive infrared absorption analysis method
Measured Objects: Substances extracted from sample water into solvent and having infrared absorption near a wavelength from 3.4 µm to 3.5 µm
Measurement Range: 0 mg/L to 200 mg/L
Resolution: for mg/L 0 to 99.9: 0.1, 100 to 200:1
Repeatability: 0 mg/L to 9.9 mg/L: ±0.2 mg/L ±1 dig
10.0 mg/L to 99.9 mg/L: ±2.0 mg/L ±1 dig.
100 mg/L to 200 mg/L: ±4mg/L ±1 dig *
*For standard liquids
0 mg/L to 9.9 mg/L: ±0.4 mg/L ±1 dig
10.0 mg/L to 99.9 mg/L: ±2.0 mg/L ±1 dig.
100 mg/L to 200 mg/L: ±4mg/L ±1 dig *
*For standard liquids
Display Method: 3.5 inches 320x240 dots Backlight color graphic LCD
Calibration Method: Select each optionally zero calibration and span calibration
Amount of Test Sample Required: 2:1 (Sample water: Solvent) -
Extraction Solvent: S-316 *Do not use any other solvent than S-316
Amount of Extraction
Solvent Required:
8 mL (possible to measure even at 10 mL) Approx. 6.5 mL (Amount of extraction solvent required)
Extraction Method: Built-in extractor Using the extraction solvent, and extracted manually outside the product
Ambient Operating
0°C to 40°C (no condensation)
Power Supply: AC 100 V to 240 V ±10%, 50/60 Hz
Power Consumption: AC 100 V: Approx. 60 VA,
AC 240 V: Approx. 90 VA
AC 100 V - 240 V: Approx. 60 VA
External Dimensions: 13.47 (H) x 7.87 (W) x 12.32 in (D)
342 (H) x 200 (W) x 313 mm (D)
7.80 (H) x 9.96 (W) x 11.54 in (D)
195 (H) x 253 (W) x 293 mm (D)
Mass: Approx. 15.5 LBS, 7kg Approx. 11 LBS, 5kg
External Output: Output to an USB memory stick
Measurement Flow: Automatic measurement (automatic switching sequence) and manual measurement after injection of liquid -
Call Length: - 20 mm
Call Material: - Quartz
Functions: 300-item data memory (measurement history), Self-error determination, Stabilized measurement value display, Clock function, With backlight for stirred batch tank, Unit conversion function 300-item data memory (measurement history), Self error determination, Stabilized measurement value display, Clock function, Unit conversion function




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.

  • 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.

  • 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 - Stirring, measurement and draining are automatically conducted after injection of the sample.
    MANUAL - You can conduct measurement operation at any timing while checking the extraction state.

*Color depends on sample
Manual Mode




OCMA-550 to measure residual oil on components and concentrations of oil adhered on solids such as soil. Measurement can be easily made only by injecting the extracted water sample into the attached cell and setting it to the equipment.

This model features a simple design which allows opening/closing of the door to setting of cell with just one hand. This is best for measurement of the extracted samples such as evaluation of residual oil on components and measurement of oil contained in food.

  • A timer function to display a measurement value in a certain amount of time is equipped. This saves work and time required for measurement.

  • Cell is easily detachable with just one hand - Simple design which allows opening/closing of door and detachment of cell with just one hand. Measurement operation becomes smoother.


Extractions Manual Mode



Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices

OCMA-500 - Filter element, Dropper, B heavy oil 10 mL, Instruction Manual, Water absorptive sheet and Power supply cable

OCMA-550 - Dropper, B heavy oil 10 mL, Instruction manual, Cell, Cell cap and Power supply cable
WC-380400 OCMA-500 $11,118.00
WC-380450 OCMA-550 7,956.00
WC-3805 Oil Extracted S-316 Solvent in 1.5 kg Bottle 495.00
WC-3840 Measuring Syringe Sample (10 mL)
WC-389011 SR-305 Solvent Reclaimer. Includes: O-rings (2/set), for Model SR-305 using S-316 Solvents, Filters (2/set), Activated Carbon (500g) and Activated Alumina (90g) 1,703.00
WC-389013 Filter Element (Teflon filter) for OCMA-500 9.00


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