Simple operation process of chlorine dioxide reagent

Author: 同奥科技

Abstract: 本文详细介绍了二氧化氯浓度测试的操作流程。首先，根据预估的浓度范围选择合适的操作步骤：若浓度在0-5 mg/L范围内，使用低量程步骤；若在5-10 mg/L范围内，使用高量程步骤。若浓度超过10 mg/L，需将水样稀释至适当范围再测定。测试过程中，颜色变化（橙黄色）指示浓度，需避免交叉污染，并选择合适的移液工具。定期校准移液工具，以确保测试准确。

Concentration prediction:Before testing the water sample, first predict the chlorine dioxide value of the water sample, and select the operation steps corresponding to the range, for example, predict the chlorine dioxide concentrationIf the degree value is 0-5mg/L, you need to select the operation step of the 0-5mg/L range; If the chlorine dioxide concentration is predicted to be 5-10mg/L, the 5-10mg/L range is chosenProcedure.

1. When the predicted value is in the range of 0 - 5mg/L

If chlorine dioxide is present, the water sample will appear orange-yellow, and the darker the color, the higher the concentration value of the water sample. Analysis Procedure: CLO2L; Watch out for overrange tips!

The simple operation process of chlorine dioxide reagent is shown in Figure 1

2. When the predicted value is in the range of 5 -10mg/L

If chlorine dioxide is present, the water sample will appear orange-yellow, and the darker the color, the higher the concentration value of the water sample. Analysis procedure: CLO2H; Watch out for overrange tips!

Chlorine dioxide reagent simple operation process with Figure 2

3. When the predicted value exceeds 10 mg/L

The water sample needs to be diluted to the corresponding concentration value in sections 1-2 above, and then operated according to the corresponding range, and the determination result is multiplied by the dilution factor.

4. Test steps on the computer

The simple operation process of chlorine dioxide reagent is shown in Figure 3

5. Precautions

◆ If there is chlorine dioxide, the water sample shows orange yellow, and the darker the color, the higher the concentration value of the water sample.

◆ Pay attention to cross-contamination, use different measuring utensils for different liquids (pay attention to changing the tip when using a pipette).

◆ Use appropriate pipetting tools to take liquids, and large range measuring tools cannot measure small volumes of water samples, such as: 5mL pipettes cannot be used to remove 2mL and below liquidsFor liquids less than or equal to 2mL, it is recommended to pipette twice with a 1mL pipette.

◆ When using a pipette, it is necessary to calibrate the pipette frequently (it is recommended to do so once a week), and pay attention to replacing the tip during use.