Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of desktop nitrite colorimeter in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk desktop nitrite colorimeter in stock here from our factory. We also accept customized orders.
product key technologies
The Desktop Nitrite Colorimeter is a high-precision laboratory analytical instrument specially developed for quantitative detection of nitrite content in domestic water, industrial process water and various liquid samples. Designed for fixed laboratory placement and routine batch sample testing, the instrument features high measurement accuracy and excellent data repeatability, perfectly meeting the long-term standardized detection demands of professional laboratories and inspection institutions.
This desktop nitrite analyzer has a wide range of application scenarios, covering large, medium and small water supply plants, industrial and mining enterprises, swimming pool operation and management departments, as well as professional food safety and environmental testing institutions. In addition to conventional daily water and industrial water quality monitoring, it can also perform nitrite content analysis on multiple liquid and food samples, ensuring all detection indexes fully comply with industry limit standards and relevant regulatory requirements.
Nitrite is a typical harmful pollutant and key safety control indicator. Excessive nitrite in water bodies and food will pose hidden risks to human health and ecological environment. Adopting professional laboratory analytical equipment for regular and accurate detection has become an essential link in water quality supervision and food safety quality control.
The nitrite analyzer adopts the colorimetric method for the measurement of liquid samples, which is based on the naphthylamine method (also known as sulfanilamide-N-1-naphthylethylenediamine method). Under acidic conditions, nitrite ions in water samples first react with sulfanilamide to form diazonium salts, and then couple with N-1-naphthylethylenediamine to produce red azo dyes. The red azo dye has a characteristic absorption peak at a wavelength of 525 nm, and its absorbance is proportional to the nitrite concentration. The quantitative analysis of nitrite content can be realized by detecting the absorbance value.
Replacing the traditional manual visual color comparison method, the instrument effectively eliminates subjective judgment errors and significantly improves detection precision and data stability. It adopts a standard desktop integrated structure, placing steadily and suitable for long-term fixed use in laboratories and testing rooms. Equipped with a high-definition display and simplified operating system, it supports batch sample testing, automatic data storage and historical result query, helping laboratory personnel efficiently complete daily detection work and data filing.
With outstanding anti-interference capability and stable long-term operating performance, the instrument can adapt to the testing environment of complex water quality and food liquid samples. It provides accurate and reliable data support for environmental monitoring, daily quality control of water plants, industrial wastewater discharge management and food safety inspection, and has become indispensable standard analytical equipment for professional laboratories, inspection and testing institutions.
Principle
The Desktop Nitrite Colorimeter adopts mature photoelectric colorimetric detection technology combined with the classic sulfanilamide-N-1-naphthylethylenediamine chemical reaction principle. By detecting the absorbance of the reaction solution at the characteristic wavelength of 525 nm, it converts the optical signal into concentration data through the built-in microprocessor, avoiding the deviation of manual visual comparison and greatly upgrading measurement resolution and detection accuracy.
Technical Parameter
|
Model |
YXSY-1 |
YXSY-2 |
|
Measuring Range |
0~0.25 mg/L |
|
|
Power Supply |
Power adapter (DC 5V/0.1A) |
220V |
|
Resolution |
0.001 mg/L |
|
|
Repeatability |
1% |
|
|
Linear Error |
±5% FS |
|
FAQ
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