Chemi-Sense Ferrous Iron Test for Hydrocarbons and Produced Water

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Routine lab analysis can delay critical decisions. Now, obtain accurate amine residual data of your corrosion inhibitors in the field within minutes using the patent-pending Chemi-Sense Ferrous Iron Sensor Field Test.

Fast, Accurate Ferrous Iron Testing of Hydrocarbons and Produced Water. Right in the Field.

Routine lab analysis can delay critical decisions. Now, obtain accurate ferrous iron (Fe2+) concentrations of your pipeline and process fluids in the field within minutes using the patent-pending Chemi-Sense System Ferrous Iron Test.

This portable, self-contained test provides measurable, repeatable results that allow for same-day system adjustments and optimized inhibitor dosing without waiting for tedious laboratory turnaround. Labs report a total iron content, requiring additional analysis of manganese to correlate corrosion activity. Ferrous iron is a ion created in the corrosion process, that by direct measurent allows an determination that active corrosion is occurring in your system.

Key Advantages

  • Reliable results in minutes.
  • Eliminates shipping and lab delays.
  • Enables on-site monitoring of corrosion activity and rapid corrective action.
  • Compact, easy-to-use design with minimal training required.

Procedure

  • Collect your sample, ensuring a visible water phase.
  • Immerse the provided sensor film for at least one minute.
  • Transfer the film to the clean, dry container for 2-3 minutes.
  • Compare the developed film color to the provided calibration scale to determine corrosion activity.

Facts About the Ferrous Iron Sensor Field Test

  • Sensor response: accurate from 0 to 1,000 ppm at 25 to 50 ppm intervals.
  • Applications: hydrocarbons, produced water, wastewater, water or low-level concentrations in process plants.
  • Reproducible results.
  • Maximum response time for low levels is 5 minutes at 70°F. Higher temperatures will respond faster.
  • Higher concentrations of ferrous iron respond faster than maximum time.
  • Minimum exposure time to sample is 1 minute.
  • Demonstrated no interference in crude or produced water.

Simple. Fast. Reliable.

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FAQs

Each kit includes sensor films, calibration chart, sample container, drying container, and user instructions.

It measures Fe2+ iron concentration produced by active corrosion in water and hydrocarbon streams in a sample, expressed in ppm (parts per million).

The test has been used on crude oil, produced water and water samples without demonstrated interferences

Obtain results in less than 5 minutes. Higher concentrations or higher temperatures produce faster results.

At least 1 minute.

The sensor provides reproducible results from 0–300 ppm, with calibration intervals of 25–50 ppm.

No. The system is self-contained and portable—no external lab tools or analyzers are required.

Compare the developed film color against the included calibration scale to determine ferrous iron concentration. An increasing trend of ferrous iron in samples taken before and after a segment indicates active corrosion occurring.

Yes. The specified 5 minute maximum response is at 70°F (21°C). Warmer conditions produce faster color development.

There are no known interferences, the sensor is only sensitive to ferrous iron Fe2+. Contact us if an interference is a concern.

No. Each film is single-use only for one test.

Ensure the film remains immersed for the full minute. Drying during exposure time may increase the reaction time.

Yes. Always view color under consistent lighting and use the provided chart.

Shelf stability is still being tested. Current recommendation: use within 4 months of receiving.

Keep at room temperature, away from direct sunlight or high humidity.

Yes, cooler temperatures extend stability of the sensor. We are still testing shelf stability.

Dispose of used films and sample residues according to your facility’s chemical waste procedures.

No formal training required. The kit comes with easy instructions.

It’s designed for batch or spot testing, not continuous monitoring. ReSpark is currently developing a continuous monitoring technology. If ferrous iron concentration increases, the sensor will continue to respond to higher levels but will not respond to levels lower than previously measured.

If color appears inconsistent or outside the range, retest with a fresh film and verify sample handling steps.

A digital companion app for automatic color quantification is under evaluation. Stay tuned for updates.

It is not currently capable of inserting into high-pressure lines. Collect a representative sample before testing. The sensor has been successfully tested to 200°F.

Chemi-Sense Systems is a part of ReSpark Innovations.