Product Name: DPD Residual Chlorine Detection Kit

The DPD reagent in the DPD water quality residual chlorine rapid determination kit is packaged in double aluminum foil tablets, which contain disintegrants and can be quickly dissolved. The product is highly sensitive to residual chlorine, with an accuracy of 0.05ppm and a testing range of 0-1.0mg/L, which can meet the needs of a wide range of users. The color chart is made by precision color separation and is equipped with a dedicated colorimetric tube, which has the advantages of easy use, long shelf life, stable and reliable quality. The configured DPD method corresponds to the color grading solution, and the measurement results are accurate and reliable compared with KIO3 standard solution. Shelf life of 2 years. This method is particularly suitable for on-site analysis and can be comparable to imported similar products. It has broad applications in the water industry, food industry, beverage production, pharmaceutical industry, and chemical industryThe application prospects.

Specification Introduction:
Specification: 0.05-1mg/l
Testing frequency: 50 times/box
Shelf life: 2 years
Storage conditions: Room temperature, cool and dry place

Operating instructions:
Take a clean colorimetric tube and add the water sample to be tested to the scale line of the tube (15mL). Pour the residual chlorine measuring reagent into the colorimetric tube and shake until completely dissolved,Lift the tube to a position about 2 centimeters above the color chart and visually compare it with the standard color scale from top to bottomThe color level that matches the color tone of the solution in the tube is the residual chlorine content in the water (milligrams per liter).
Note: 1) The pH value of the water sample to be tested is 5.0~8.0, and the temperature is 15~25 ℃;
2) The presence of other oxidants can interfere with the measurement;
3) The colorimetric process should be completed within 5 minutes after adding the medication.

Common interference:
1. The pH value should be controlled between 5-8.
2. Oxidants: bromine, iodine, aniline, iodoanine, ozone, hydrogen peroxide, chromate, manganese oxide, etc.
3. Reductive agents: Nitrite, etc.
4. If the alkalinity of water exceeds 250mg/l and the acidity exceeds 150mg/l, the measured values will be unstable during the measurement process, and the sample color will disappear or become very light. Adding diluted HCl or NaOH to the sample for neutralization reaction can solve this problem.
5. The color carried by the liquid itself can also cause interference. Activated carbon can be used for decolorization.

matters needing attention:
This product is non-toxic, but please keep it out of reach of children,Accidentally touching the skin, rinse off with water.