Nitrite is a highly toxic substance that can oxidize ferrous ions in hemoglobin into ferric ions, thereby making it lose its ability to bind oxygen, hindering the transport of oxygen in the body, causing acute poisoning in the human body, and causing life-threatening conditions. Nitrite can cause oxidative damage to vitamin A and hinder the conversion of carotene into vitamin A, resulting in vitamin A deficiency in the human body. At the same time, nitrite that enters the stomach and intestines can easily be converted into carcinogenic nitrosamines when it encounters amines. Animal experiments that have been conducted have confirmed that nitrosamines are highly carcinogenic. Because the toxicity of nitrite seriously endangers health, and the ecological environment on which humans depend for survival is polluted to varying degrees, soil, water quality, vegetables, etc. have been found to contain different amounts of nitrite. Therefore, it is of great significance to accurately and quickly measure the content of nitrite. In the food industry, due to illegal additions, the phenomenon of nitrite exceeding the standard is common.
Principle
Nitrite in water is diazotized with p-aminophenylsulfonamide, and then coupled with N-(1-naphthyl)-ethylenediamine to generate a purple-red azo dye for colorimetric quantification.
Features
1.Quick and easy
Operating in accordance with the instructions, users can complete the low hardness test independently without specialized
training.5 minutes is enough to complete the analysis of one water sample.
2.Accurate and reliable
Determination results with this method are in accordance with the results with the standard method. It can be used as an
alternative method to the standard method.
3.Quantitative packing
The kit can be used for 100 times. It is small, light and easy to carry.
1.Offering Sample for Testing .
2.R & D team to provide technical support.
3.Provide packaging, labeling OEM customization.
Packing & Delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Company Profile
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 other industry.
FAQ
1. Who are we?
HuanKai are based in Guangdong, China, start from 1993,there are total about 301-500 people in HKM. HuanKai has successfully established four major product lines: microbiological testing reagents and consumables, digital laboratory instruments, rapid water testing products for physical and chemical analysis, and eco-friendly cleaning and disinfection solutions. These lines boast over 2,000 different products, each protected by independent intellectual property rights.
2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Microbial Detection Product,Peptone&Tryptone,Deydrated Culture Media,Granular Media,Microbial Air Sampler and so on.
4. Why should you buy from us not from other suppliers?
1.With strong R&D capacity and good scientific research conditions,over 30 years of experience 2.One of the largest physicochemical reagent and culture media manufactuer in China follow international standard 3.Stable high quality main raw material from Europe & strictly quality control
5. What services can we provide?
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,MoneyGram,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese
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