ASTM D7678


Correlation to

ASTM D3921, ASTM D4281, ASTM D7066, DIN 38409-H18, DIN 38409-H53, EN 14039, EPA 1664B, EPA 9071B, ISO 16703, ISO 9377-2, ISO 9377-2 (MOD) OSPAR, IP426



ERACHECK is the industry leading measurement device for CFC-free and reliable oil-in-water or oil-in-soil testing. The only fully ASTM D7678 compliant analyzer on the market, it combines all benefits of the withdrawn IR method ASTM D3921 with the advantages of CFC-free solvents. It measures sub-ppm concentrations of Total Petroleum Hydrocarbons (TPH) and Total Oil and Grease (TOG) in water and soil.


Quantum Cascade Laser Technology

ERACHECK is the first and only measurement instrument on the market that uses the latest Quantum Cascade Laser (QCL) technologyto measure liquid samples. This measurement technique is covered by international patents held by eralytics and our partner , allowing a major step in easy-to-use, precise and environmental friendly oil-in-water testing.


Unique Measurement Precision

ERACHECK shows a linear behavior over the broad measurement range of 0.2 to 2000 mg/l during oil-in-water testing. At the low end of the concentration ranges ERACHECK PRO offers a repeatability of 0.1mg/l and at the high end it still delivers a repeatability as good as 0.1%. ERACHECK also perfectly correlates to gas chromatography (e.g. ISO 9377-2 (mod) OSPAR), gravimetric (e.g. EPA 1664A) and infrared (e.g. ASTM D7066) oil-in-water testing methods.


Measurement Procedure


  • Perform the sample extraction: Typically 900ml water sample are extracted with 50ml cyclohexane

  • Select the calibration to use

  • Enter sample ID, water and cyclohexane volumes and the operator ID

  • Chose if you are using the cartridges

  • Press the RUN button

  • Run a background measurement

  • Run a sample measurement


You are guided through the whole procedure by instructions on the screen. The measurement procedure is visualized on the screen and after the measurement the result is displayed. The extraction parameters for the oil-in-water testing can be adjusted to your needs.


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Feature Video

  • Latest laser technology (QCL) for highest precision

  • Patented measurement principle for oil-in-water testing

  • Use of an environmental friendly and low cost extraction solvent instead of CFCs

  • Fast & easy measurement of low concentration of oil in water or soil

  • Excellent correlation to a wide range of international standards

  • Usable for a wide range of applications

Operation Video

Watch this video to get an overview on the sample handling and measurement procedure of ERACHECK during oil-in-water testing.



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