Testonic® Active Oxygen Residue Test Kit is designed for quick and easy measurement of residual hydrogen peroxide (H₂O₂) in water and process solutions after cleaning, disinfection and bleaching operations.
Ideal for textile washing and bleaching baths, industrial cleaning processes and rinse water monitoring. The drop-counting method requires no instrument and provides results in ppm within approximately 5 minutes.
|
Drop Factor
10 ppm H₂O₂
Per drop
|
Test Time
5 Minutes
Approx.
|
Test Capacity
50 Tests
Approx.
|
Why Is Active Oxygen Residue Monitoring Important?
Hydrogen peroxide is widely used in bleaching and disinfection processes. However, residual peroxide may cause unwanted oxidative effects in subsequent processing stages.
Testonic® allows you to monitor residual peroxide levels and evaluate the effectiveness of rinsing and peroxide removal operations.
Residue Testing in Three Easy Steps
| 01 | Collect Sample: Fill the test tube with the specified amount of water or process solution. |
| 02 | Perform Test: Add the kit solutions in the sequence specified in the instructions and count the titration drops. |
| 03 | Calculate Result: Multiply the drop count by 10 to obtain the H₂O₂-equivalent concentration in ppm. |
Kit Contents
- Solution 1
- Solution 2
- Graduated test tube
- Instructions for use
Testonic® Active Oxygen Residue Test Kit – Hydrogen Peroxide (H₂O₂) Monitoring
Testonic® Active Oxygen Residue Test Kit is a practical drop-counting test designed to determine residual hydrogen peroxide in water and process solutions after cleaning, disinfection and bleaching operations.
Suitable for textile bleaching and washing baths, industrial cleaning systems and final rinse water monitoring. The kit provides H₂O₂-equivalent results in ppm within approximately 5 minutes without laboratory instruments.
|
Parameter
H₂O₂
|
Drop Factor
10 ppm
|
Test Time
~5 min
|
Capacity
~50
|
Analytical Principle
The kit uses a drop-counting titrimetric method based on a chemical reaction to determine hydrogen peroxide-equivalent oxidizing activity in the sample.
After adding the specified reagents, the result is calculated from the number of drops consumed during titration.
H₂O₂ equivalent (ppm) = Number of titration drops × 10
For example, under the specified test conditions, consumption of 3 drops corresponds to 30 ppm H₂O₂ equivalent.
Why Is Active Oxygen Residue Monitoring Important?
Hydrogen peroxide is widely used in textile bleaching, industrial cleaning and disinfection due to its strong oxidizing properties.
Residual peroxide may cause unwanted color changes or process variations, particularly in textile dyeing and finishing operations.
Measuring residual levels makes it easier to evaluate the effectiveness of rinsing and peroxide removal processes.
Applications
- Textile processing: Monitoring washing and rinsing baths after bleaching.
- Dyehouses: Evaluating hydrogen peroxide residues before dyeing.
- Industrial cleaning: Checking rinse water after peroxide-based cleaning processes.
- Disinfection processes: Monitoring residual oxidizing activity after H₂O₂-based treatments.
- Process and quality control: Routine peroxide monitoring in suitable aqueous samples.
How to Use
| 01 | Sample Preparation Fill the test tube with the sample volume specified in the instructions for use. |
| 02 | Reagent Application Apply Solution 1 and Solution 2 in the sequence and quantities specified in the instructions. Count the drops used during titration. |
| 03 | Result Calculation Multiply the number of titration drops by 10 to obtain the result in ppm H₂O₂ equivalent. |
Note: Follow the product instructions for reagent addition sequence, quantities and titration endpoint determination.
Technical Specifications
| Property | Description |
| Test parameter | Active oxygen / H₂O₂ equivalent |
| Analytical method | Drop-counting titrimetric method |
| Drop factor | 1 drop = 10 ppm H₂O₂ |
| Result unit | ppm H₂O₂ equivalent |
| Test time | Approximately 5 minutes |
| Test capacity | Approximately 50 tests |
| Sample type | Water, rinse water and suitable aqueous process solutions |
| Instrument required | No |
Interpretation of Results
Results are expressed as ppm H₂O₂ equivalent. A higher drop count indicates a higher measured level of oxidizing activity in the sample.
| Number of Drops | H₂O₂ Equivalent |
| 1 | 10 ppm |
| 2 | 20 ppm |
| 3 | 30 ppm |
| 5 | 50 ppm |
| 10 | 100 ppm |
Results should be compared with the process limits established by the operator. No drop consumption does not prove that the peroxide concentration is absolutely zero.
Analytical Interferences and Measurement Limitations
- Other oxidizing substances present in the sample may affect the H₂O₂-equivalent result.
- Results obtained from mixtures containing peracetic acid should not be considered specific to H₂O₂ alone.
- Reducing agents and certain process chemicals may interfere with measurement.
- Highly colored or turbid samples may make the titration endpoint difficult to observe.
- The 10 ppm drop factor should be considered when evaluating the method's limited resolution.
The kit is not intended to replace high-sensitivity laboratory methods for trace-level determination. Suitable confirmatory methods should be used when sample interference is suspected.
Related Residue and Hygiene Parameters
Active oxygen monitoring is only one part of post-cleaning and disinfection quality control. Other residues may require separate testing depending on the chemicals used.
- Hydrogen peroxide: Active oxygen residue monitoring.
- Peracetic acid: PAA-specific concentration or residue measurement.
- Hypochlorite: Chlorine-based oxidizing residue monitoring.
- Acid / alkali: Chemical residue monitoring after cleaning.
- Detergents: Anionic, nonionic or cationic surfactant residues.
Important Application Notes
- Use a clean test tube for each measurement.
- Do not change the specified sample volume or reagent addition sequence.
- Perform the test promptly after sample collection.
- Interpret results according to the chemicals used and the process conditions.
- The kit is not a microbiological cleanliness or sterility test.
Frequently Asked Questions
1. What does the Active Oxygen Residue Test Kit measure?
It measures oxidizing residues in aqueous samples and expresses the results as ppm H₂O₂ equivalent.
2. What does one drop represent?
Under the standard test conditions specified on the product label, one drop corresponds to 10 ppm H₂O₂ equivalent.
3. How long does the test take?
Results are obtained in approximately 5 minutes.
4. Can it be used after textile bleaching?
Yes. It can be used to monitor residual peroxide levels in suitable liquid samples after bleaching and washing operations.
5. Does it also measure peracetic acid concentration?
The kit is intended for H₂O₂-equivalent active oxygen monitoring. Peracetic acid may interfere with the result. A PAA-specific method is required for separate peracetic acid determination.
6. Can it be applied directly to surfaces?
The kit is intended for suitable liquid samples. Surface monitoring requires a defined rinsing or sampling procedure; direct surface application should not be assumed.
7. Does a zero result mean all chemical residues have been removed?
No. The test evaluates H₂O₂-equivalent oxidizing residues under its measurement conditions. Other chemical residues require separate tests.
8. Is laboratory equipment required?
No. The test is performed using the supplied solutions and test tube.
Pollution Monitoring and Water Quality Testing for Environmental and Wastewater Management
It is used to determine hydrogen peroxide and other oxidant residues in wastewater, to evaluate the effectiveness of water treatment processes and to prevent environmental pollution.
Test and Process Control Kits for Textile Finishing and Dyeing Mills
Checks oxygen-based cleaner or bleaching residues, helping reduce oxidative carryover and shade variation before dyeing.
Testonic® Dyehouse Control Pack
Checks active oxygen residues and evaluates oxidative carryover risk from oxygen-based bleaching, cleaning or auxiliary processes.
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