The “Urea Rapid Test Kit†project was included in the Tianjin Science and Technology Bureau's science and technology project plan and passed the results appraisal.
Working principle and technical indicators:
1. Urea rapid detection kit can detect the characteristic color reaction of urea. According to the principle of specific coloration of yellow product of dimethylbenzaldehyde and urea in the presence of hydrochloric acid, the test reagent is added to the urea sample to be detected within a few seconds, and the human eye is easy to recognize the yellowish color in fifteen seconds. The maximum is reached within the interior to complete the determination of the urea characteristics.
2. Urea rapid detection kit can detect whether impurities are mixed in urea. The detection of the dopant in the urea is completed according to the principle that the urea is dissolved in the blending solvent of water, ethanol and methanol, and the impurities are not dissolved in the blending solvent or react with the precipitating agent to form an insoluble matter. When the impurity content is more than 3%, the positive reaction which is easily recognized by the human eye is the solution turbidity.
3. Urea rapid detection kit can detect the biuret content in urea. According to the principle that the biuret has a purple color reaction with the divalent copper ion under alkaline conditions, when the detection reagent is added to the urea sample, the blue to purple color which is easily recognized by the human eye appears due to the different biuret content. The color change can reach 2% of the biuret content. Standard color rendering with increasing interval, with easy-to-discriminate color difference and color transition.
main feature:
The Urea Rapid Test Kit features on-site operation, fast display, accurate identification, easy portability and easy operation.
The project has strong practicability, low price and wide application market. It can provide quick and convenient testing methods for on-site quality inspection of urea products. It can also provide convenient quality inspection tools for operators and farmers to purchase urea. It is safe and safe to use.
The project was searched and searched in China, and no reports on the results were found. It is a domestic leader.
Working principle and technical indicators:
1. Urea rapid detection kit can detect the characteristic color reaction of urea. According to the principle of specific coloration of yellow product of dimethylbenzaldehyde and urea in the presence of hydrochloric acid, the test reagent is added to the urea sample to be detected within a few seconds, and the human eye is easy to recognize the yellowish color in fifteen seconds. The maximum is reached within the interior to complete the determination of the urea characteristics.
2. Urea rapid detection kit can detect whether impurities are mixed in urea. The detection of the dopant in the urea is completed according to the principle that the urea is dissolved in the blending solvent of water, ethanol and methanol, and the impurities are not dissolved in the blending solvent or react with the precipitating agent to form an insoluble matter. When the impurity content is more than 3%, the positive reaction which is easily recognized by the human eye is the solution turbidity.
3. Urea rapid detection kit can detect the biuret content in urea. According to the principle that the biuret has a purple color reaction with the divalent copper ion under alkaline conditions, when the detection reagent is added to the urea sample, the blue to purple color which is easily recognized by the human eye appears due to the different biuret content. The color change can reach 2% of the biuret content. Standard color rendering with increasing interval, with easy-to-discriminate color difference and color transition.
main feature:
The Urea Rapid Test Kit features on-site operation, fast display, accurate identification, easy portability and easy operation.
The project has strong practicability, low price and wide application market. It can provide quick and convenient testing methods for on-site quality inspection of urea products. It can also provide convenient quality inspection tools for operators and farmers to purchase urea. It is safe and safe to use.
The project was searched and searched in China, and no reports on the results were found. It is a domestic leader.
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