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[Chemical Knowledge]：Precautions and Correct Method for Determination of Residual Chlorine on Site

Read： 232 Time：7months ago Source：Transform the World with Simplicity

On-site determination of residual chlorine is a common task in environmental monitoring and water quality testing. Residual chlorine is a disinfectant that can kill bacteria and viruses, but excessive residual chlorine can also cause harm to humans and the environment. Therefore, it is necessary to pay special attention to some matters and correct methods in the process of determining residual chlorine to ensure the accuracy and reliability of the test results. Let's take a look at the matters needing attention and correct methods for the determination of residual chlorine on site.

1. Select the appropriate reagent and equipment
Before performing the residual chlorine test, you first need to select the appropriate reagent and equipment. The reagent should be strictly tested and certified to accurately determine the residual chlorine content in the water. At the same time, the equipment used also needs to be kept clean and intact to ensure the accuracy of the test results.

2. Sample collection and preservation
When conducting residual chlorine tests, sample collection and preservation are also essential. First of all, it is necessary to ensure that the sample collection method meets the standard and avoid the influence of external pollution.

need to store the sample properly after collection to avoid chemical changes or bacterial growth that may distort the test results.

3. The correct use of the instrument
in the field determination of residual chlorine, the need to strictly follow the instrument operating instructions. For example, the calibration of PH meter and residual chlorine meter should be carried out in strict accordance with the operation manual to ensure the accuracy of the test results.

4. Skills training
for operators When conducting residual chlorine tests, operators need to receive professional training, understand the testing principles and methods, and master the operating skills of the instrument. Only trained professionals can guarantee the accuracy of the test results.

5. the control
of the test environment

in the field determination of residual chlorine, need to pay attention to control the test environment, to avoid external interference. For example, avoid direct sunlight, avoid wind blowing, etc., to ensure the authenticity of the test results.

To sum up, it is necessary to pay special attention to the above matters and correct methods when determining residual chlorine on site to ensure the accuracy of the test results. Only in strict compliance with the operating procedures and methods of the premise, the determination of the residual chlorine content is true and effective. It is hoped that the content of this article can help readers to better carry out residual chlorine test, so as to ensure the safety of water quality and environmental health.