| Customization: | Available |
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| After-sales Service: | 3 Years |
| Warranty: | 3 Years |
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Guangdong HuanKai Microbial Sci. & Tech. Co., Ltd. is a national high-tech enterprise under the Guangdong Institute of Microbiology which is attached to Guangdong Academy of Sciences. Since established in 1993, HuanKai has adhered to the strategy of scientific and technological innovation and development, and has formed four product lines including microbiological testing reagents and consumables, digital laboratory instruments, physical and chemical rapid water detecting products, and high-efficiency environmentally friendly cleaning agents and disinfectant, both are with independent intellectual property rights. More than 2, 000 varieties of products are widely applied in mainland China, Hong Kong, Macao, Taiwan and Southeast Asia. Huankai has developed into an important R&D production base for domestic food and drug.
Q1: I purchased DPD reagent with gray spots, is it normal?
A: DPD residual chlorine, total chlorine, ozone reagent kits supporting the reagents are tablets. Due to the differences in the color of the DPD material, the color of the product may be white, light gray or pale pink. If the tablet is dark, sticky, do no use it .
Q2:How often should the measurement be completed?
A: Because DPD residual chlorine, total chlorine, ozone reagents react with the oxidizing substances in the air, resulting in color deepening. Therefore, we suggest to finish the testing within 5 minutes after the addition of the reagent.
Q3:What are the factors in the water that interfere with the measurement?
• Oxidizing agents: bromine, iodine, bromamine, iodine, ozone, hydrogen peroxide, chromate, manganese oxide.
• Reducing agent: nitrite etc..
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