Testonic® Acidity Test Kit is designed for the practical measurement of mineral and carbonic acidity in water samples. It provides a numerical indication of water acidity to support water-quality monitoring, treatment-process control, and the evaluation of acidity-related issues.
The kit can be used for well water, industrial process water, water treatment systems, boiler water, and cooling-water applications. Its drop-count titration method eliminates the need for complex laboratory instruments. By observing the color change in the sample, the acidity value can be determined in approximately 5 minutes.
It provides a convenient way to compare water sources, monitor changes in process-water acidity, and support routine water-conditioning checks.
Why Is Water Acidity Important?
Mineral acids and carbonic acid formed from dissolved carbon dioxide can influence the chemical properties of water. Under certain conditions, elevated acidity may contribute to corrosion of metal surfaces and increase chemical demand in water-conditioning processes. Routine acidity measurement helps assess water chemistry and monitor changing process conditions.
Acidity Testing in 3 Simple Steps
- Prepare the Sample: Fill the graduated test tube with the water sample to the level specified in the instruction manual.
- Perform the Test: Add the appropriate test solutions in the prescribed sequence. Add the titration solution drop by drop while gently mixing the sample.
- Read the Result: Count the drops required to reach the specified color change. Under the kit's measurement conditions, each drop corresponds to 50 ppm acidity.
Package Contents
- Acidity Test Solution A
- Acidity Test Solution B
- Acidity Test Solution C
- Graduated test tube
- Instruction manual
Testonic® Acidity Test Kit is designed for the determination of mineral and carbonic acidity in water samples using a drop-count titration method. It provides a practical solution for acidity monitoring in water treatment, industrial processes, boilers, and cooling-water systems.
The color-change endpoint allows results to be obtained without laboratory instruments. The kit has a drop factor of 1 drop = 50 ppm and provides approximately 50 tests.
1 Drop = 50 ppm
Drop-count titration
Approx. 5 minutes
Approx. 50 tests
Analytical Principle
Acidity is a water-quality parameter related to the amount of base required to neutralize acidic components in a sample to a specified titration endpoint.
Mineral acidity represents the contribution from mineral acids, while carbonic acidity is associated with dissolved carbon dioxide and the carbonic acid equilibrium in water.
The test uses suitable indicator and titration solutions. The number of drops required to reach the specified color change is used to calculate acidity. The reagent sequence and endpoint depend on the type of acidity being measured and should be followed according to the instruction manual.
Applications
- Water treatment systems: Monitoring changes in acidity before and after treatment.
- Boiler and cooling water: Supporting the evaluation of water-conditioning processes.
- Industrial process water: Tracking acidity changes under operating conditions.
- Well and source water: Comparing the acidity of different water sources.
How to Perform the Test
Fill the clean graduated test tube with the sample volume specified in the instruction manual.
Add the test solutions specified for the acidity measurement. Add the titration solution drop by drop while gently mixing the sample.
Count the drops required to reach the specified color change. Multiply the drop count by 50 to obtain the acidity value in ppm according to the kit calibration.
Technical Specifications
| Parameter | Mineral and carbonic acidity |
| Analytical Method | Drop-count titration |
| Drop Factor | 1 drop = 50 ppm |
| Result Reading | Color-change endpoint and drop count |
| Test Time | Approx. 5 minutes |
| Test Capacity | Approx. 50 tests |
| Storage Temperature | 8–24 °C |
Interpretation of Results
The acidity value is calculated by multiplying the number of titration drops by the kit's drop factor.
Acidity (ppm) = Number of drops × 50
For example, if 4 drops are required to reach the specified endpoint:
4 × 50 = 200 ppm acidity
This calculation applies to the sample volume and test conditions specified in the instruction manual.
Acidity and pH are different water-quality parameters. pH indicates how acidic or basic the water is, whereas acidity is related to the amount of acidic material neutralized during titration to a specified endpoint. Two samples with similar pH values may therefore have different acidity levels.
Results should be evaluated according to the intended water application, process conditions, and the target values established for the system.
Related Water Analyses
Acidity can be assessed alongside other measurements when evaluating water chemistry.
| Acidity | Titrimetric evaluation of acidic components |
| pH | Determination of the acidic or basic character of water |
| Alkalinity | Evaluation of acid-neutralizing capacity |
Important Notes
- Use the sample volume and reagent sequence specified in the instruction manual.
- The drop factor applies to the supplied dropper and specified measurement conditions.
- Follow the relevant procedure for mineral or carbonic acidity determination.
- Read the result when the specified color-change endpoint is reached.
- Store the test solutions under the recommended conditions.
Frequently Asked Questions
It allows mineral and carbonic acidity in water samples to be evaluated by drop-count titration.
Under the specified kit conditions, each drop corresponds to 50 ppm acidity.
No. pH describes the acidic or basic character of water, while acidity measures an acid-related contribution determined by titration.
No. Results are determined from the color-change endpoint and the number of drops used.
The analysis takes approximately 5 minutes.
Approximately 50 tests, depending on sample acidity and reagent consumption.
For Drinking Water Production Facilities
Measures the acidity level of drinking water.
Test and Process Control Kits for Textile Finishing and Dyeing Mills
Measures acidity in process water, acidic baths or auxiliary samples, supporting neutralization demand and dosing decisions.
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