What does the Chemi-Sense™ Dissolved Fe(II) System actually measure?

It measures dissolved Fe(II) (ferrous iron) in a sample, expressed in ppm (parts per million).

How long does the test take?

Results are available in under 2 minutes at ambient conditions. Do not heat the sample.

What’s the minimum exposure time to the sample?

Follow the field procedure and read the result within 2 minutes at ambient conditions. Do not heat the sample.

How accurate is the test?

The sensor provides reproducible results across 5–1000 ppm when used with the supplied calibration scale.

How do I interpret the color results?

Compare the developed film color against the included calibration scale to determine ferrous iron concentration. Use the reading as a trend or signal for changes in the process stream.

Does temperature affect the response time?

For best comparability, test at ambient conditions using the field method, which is designed for under 2 minutes. Do not heat the sample.

What happens if the film dries during exposure?

Keep the film immersed for the field procedure and read the result within 2 minutes at ambient conditions. Do not heat the sample.

What’s the shelf life of the sensor films?

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

How should I store the test?

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

Dissolved Fe(II) Field Test for Corrosion Trending

Q: Do I need lab equipment to use this test?

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

Routine lab analysis can delay critical decisions. Now, measure dissolved Fe(II) (ferrous iron) in the field in under 2 minutes at ambient using the patent-pending Chemi-Sense Ferrous Iron Sensor Field Test.

Chemi-Sense dissolved Fe(II) sensor film with red colorimetric response

Fast, Accurate Dissolved Fe(II) Field Testing.

Routine lab analysis can delay critical decisions. Now, obtain accurate Fe(II) concentrations in crude, produced water, water, wastewater, and process fluids in the field under 2 minutes at ambient using the patent-pending Chemi-Sense System Ferrous Iron Test.

Labs often report total iron and may need extra work to relate results to corrosion chemistry. This test measures dissolved Fe(II), an ion associated with corrosion chemistry, as a field concentration screen in ppm. It is not total iron, and not iron in solids such as iron sulfide or iron carbonate, which can also be Fe(II). It is not a corrosion-rate meter. Rising dissolved Fe(II) trends, used with other integrity data, can support questions about system chemistry and whether further investigation is warranted.

Key Advantages

Reliable results in under 2 minutes at ambient.
Eliminates shipping and lab delays.
Supports on-site dissolved Fe(II) screening so teams can act the same day alongside other integrity data.
Compact, easy-to-use design with minimal training required.

Procedure

Collect your sample. Immerse the sensor film for at least 2 minutes (or pour sample so liquid covers the film). Gently blot excess liquid with a clean soft tissue. Color develops in under 2 minutes at ambient. Do not heat. Compare to the calibration chart.

Facts About the Dissolved Fe(II) Sensor Field Test

Sensor response: accurate from 5–1000 ppm; see calibration chart.
Applications: crude, produced water, water, wastewater, and process fluids.
Reproducible results.
Results available in under 2 minutes at ambient. Do not heat.
Minimum exposure time to sample is 2 minutes at ambient; do not heat.

Simple. Fast. Reliable.

FAQs

Each kit includes sensor films, calibration chart, sample container, drying container, a glove (provided), and user instructions.

It measures dissolved Fe(II) in a sample, expressed in ppm. It is not total iron, and not iron in solids such as iron sulfide or iron carbonate, which can also be Fe(II). It is not a corrosion-rate meter.

The test has been used in crude and produced water. Contact us before using it on other water types or process fluids.

Results available in under 2 minutes at ambient. Do not heat.

At least 2 minutes at ambient; do not heat.

The sensor provides reproducible results from 5–1000 ppm; see calibration chart.

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

Compare the developed film color against the included calibration scale to estimate dissolved Fe(II) concentration. A rising dissolved Fe(II) trend before and after a segment can be a useful signal for integrity discussions when combined with other data. It is not a corrosion-rate measurement.

Results available in under 2 minutes at ambient. Do not heat.

This is a field screen. If your stream contains other chemicals, contact us with your sample matrix before relying on the reading.

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

Ensure the film remains immersed for the full 2 minutes at ambient; do not heat. 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. Follow the kit insert.

If you will not use the films within 24 hours, store them in the provided petri dish in a refrigerator at about 4°C, away from direct sunlight and heat. Shelf stability is still being tested.

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. Continuous monitoring technology is under development.

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 designed to be inserted into high-pressure lines. Collect a representative sample and test it per the kit insert.