Testonic® Ammonium Test Kit is designed for the rapid and convenient determination of ammonium (NH4+) levels in water samples. It helps monitor ammonium content, evaluate nitrogen loading, assess treatment processes, and support water quality control.
The kit is suitable for ammonium monitoring in wastewater, biological treatment systems, agricultural drainage water, well water, and industrial processes. Its colorimetric color-comparison method allows testing without laboratory instruments. After adding the test reagents, the developed color is compared with the supplied reference scale to determine the ammonium level.
It provides a convenient solution for monitoring changes in ammonium concentration, comparing water sources, and supporting process control in water treatment applications.
Why Is Ammonium Testing Important?
Ammonium is part of the nitrogen cycle in water. Organic matter decomposition, agricultural activities, and certain industrial processes can affect ammonium concentrations. In biological wastewater treatment, ammonium monitoring helps evaluate nitrogen removal processes. Regular ammonium testing supports water quality monitoring and process control.
Ammonium Testing in 3 Simple Steps
- Prepare the Sample: Place 5 mL of the water sample in the test vial.
- Perform the Test: Add 6 drops of Reagent A and shake. Add 6 drops of Reagent B, shake again, and wait 8–10 minutes for color development.
- Read the Result: Compare the developed color with the supplied color chart to determine the ammonium level.
Package Contents
- Ammonium Test Reagent A
- Ammonium Test Reagent B
- 5/10 mL graduated test vial
- Color comparison chart
- Instruction manual
Testonic® Ammonium Test Kit provides a practical color-comparison method for determining ammonium (NH4+) levels in water samples. It is suitable for ammonium monitoring in wastewater treatment plants, biological treatment systems, agricultural drainage water, and industrial processes.
The color developed after adding two test reagents is compared with the supplied reference chart. This allows on-site testing without a spectrophotometer or other laboratory instruments. Results support monitoring of ammonium content and nitrogen-related water treatment processes.
Analytical Principle
Ammonium is one of the chemical forms in which nitrogen occurs in water. In colorimetric analysis, the color developed after applying the test reagents is used to determine the ammonium level.
The developed color is compared with the reference color chart. The result is read from the closest matching value and expressed in ppm NH4+.
Why Measure Ammonium?
Ammonium may occur in water as a result of organic nitrogen decomposition and various biological processes. Agricultural activities, fertilizer application, domestic wastewater, and certain industrial processes can also affect ammonium concentrations.
In biological wastewater treatment systems, monitoring ammonium helps evaluate nitrification and overall nitrogen removal performance. Comparing measurements from different treatment stages supports the tracking of process changes.
- Wastewater treatment plants: Monitoring ammonium levels in influent, process, and effluent samples.
- Biological treatment systems: Tracking nitrogen conversion processes and treatment performance.
- Industrial processes: Monitoring ammonium in applications where ammonium control is required.
- Agricultural drainage water: Evaluating changes in nitrogen-containing constituents.
- Well and surface water: Including ammonium monitoring in water quality evaluations.
- Water source comparisons: Comparing ammonium levels in samples collected from different locations.
How to Perform the Test
Place 5 mL of the water sample in a clean test vial.
Add 6 drops of Reagent A and shake. Add 6 drops of Reagent B, shake again, and wait 8–10 minutes.
Compare the developed sample color with the reference chart to determine the ammonium level.
Technical Specifications
| Measured parameter | Ammonium (NH4+) |
| Analytical method | Colorimetric, visual color comparison |
| Measuring range | 10 – 70 ppm NH4+ |
| Sample volume | 5 mL |
| Reagent application | 6 drops of Reagent A + 6 drops of Reagent B |
| Color development time | 8 – 10 minutes |
| Result reading | Reference color chart |
| Test capacity | Approx. 50 tests |
| Storage temperature | 8 – 24 °C |
Interpreting the Results
After color development, the sample color is compared with the reference chart. The closest matching scale value is taken as the ammonium result. Results are expressed in ppm NH4+.
NH4+ and NH4-N: Ammonium concentrations may be expressed as the ammonium ion or as nitrogen equivalent. These reporting units are not numerically identical. A concentration of 1 mg/L NH4+ corresponds to approximately 0.776 mg/L nitrogen (N).
Ammonium and ammonia: An equilibrium exists between ammonium (NH4+) and ammonia (NH3) in water. Their relative proportions depend on pH and temperature. These conditions are therefore relevant when evaluating results in biological systems.
Recording measurements over time helps identify changes in ammonium levels throughout water treatment processes.
Related Water Quality Parameters
| Parameter | What It Indicates |
|---|---|
| Ammonium | Monitoring ammonium levels |
| Nitrite | Nitrite formed during nitrogen conversion processes |
| Nitrate | Nitrate in the nitrogen cycle |
| pH | Water property related to ammonium-ammonia equilibrium |
| Dissolved Oxygen | Oxygen conditions in biological treatment and nitrification |
Important Usage Notes
- Use a clean test vial for each measurement.
- Prepare a 5 mL water sample.
- Add the reagents in the specified sequence and mix after each addition.
- Compare the color after the 8–10 minute development period.
- Use consistent reporting units when comparing results.
- Store reagents under the specified conditions.
Frequently Asked Questions
It determines ammonium levels in water samples. Results are read from the color chart in ppm NH4+.
No. Ammonium (NH4+) is an ionic form, while ammonia (NH3) is an uncharged chemical species. Their equilibrium in water depends on pH and temperature.
Yes. It can be used to monitor ammonium levels and treatment process changes in samples within the kit's measuring range.
Ammonium is a useful parameter for monitoring nitrogen loading in water and evaluating biological treatment performance.
After adding the reagents, allow 8–10 minutes for color development before comparing the sample with the color chart.
No. Results are determined by visually comparing the developed color with the reference chart supplied with the kit.
The kit provides approximately 50 tests. Actual capacity depends on the reagent quantities consumed during testing.
For Drinking Water Production Facilities
It is used to detect the presence of ammonium in drinking water sources, to determine whether the water meets regulatory standards and to protect public health.
For Textile Finishing and Dyeing Businesses
Ammonia, ammonium chloride etc. Detects the presence of ammonia in acrylate polymers produced with ammonia. Polyacrylates are used in textile dyeing as dispersants, thickeners, soaps, and ion sequestrants. Acrylates produced with ammonia easily decompose as alkalinity/temperature/pressure increases, releasing ammonia into the environment and causing precipitation. In the presence of ammonia, they can cause many problems such as pH drops, stains, etc. in dyeing.
Test and Process Control Kits for Textile Finishing and Dyeing Mills
Monitors ammonium in water and process samples, supporting evaluation of auxiliary residues, wastewater load or special contamination cases.
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How to detect the presence of ammonium in dyeing chemicals or water?
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