Harvey Sen water quality testing reactive oxygen species reagentUsed for detecting residual reactive oxygen species in drinking water, hospital wastewater, industrial wastewater, and other water treated with monopersulfate disinfectant.

Technical principles

Harvey Sen water quality testing reactive oxygen species reagentBased on the principle of DPD method in national standard GB/5750.11-2006, the disinfectant containing active oxygen reacts with DPD reagent in the presence of potassium iodide to make the solution red. The absorbance value of the colorimetric solution is measured at the test wavelength to obtain the content of active oxygen in the water sample. Within a certain concentration range, the absorbance value is proportional to the content of active oxygen in the water sample.

measuring range

Testing precautions

1. If the content is higher than the reagent range, the measured value can only be used to estimate the dilution factor and cannot be used as a test result. After diluting the sample, retest;

2. This reagent is a white or light gray powder. If the reagent clumps or turns black, please stop using it and contact the manufacturer;

3. The pH value of the water sample to be tested is 5.0-8.0;

4. The measurement should be completed within 1 minute after the completion of color development. Prolonged time will result in inaccurate test results;

5. If the concentration of reactive oxygen species in the water sample is too high, there will be a phenomenon where the color changes from pink to colorless. In this case, it is recommended to dilute it appropriately before testing;

6. Store in a dry, cool place, out of reach of children. Do not store with food, medicine, etc., and do not put into fire.