CNW gas chromatography column

CNW gas chromatography column is an important organic chemical intermediate product, mainly used to make CNW gas chromatography columns, which have excellent water resistance, heat resistance, arc resistance, and excellent flame retardancy. Can be used for the production of decorative panels, such as amino plastics, adhesives, coatings, coin paper reinforcing agents, textile auxiliaries, etc. At present, melamine is considered to have mild toxicity, but in 2007, there was an animal poisoning incident in the United States due to the presence of melamine in pet food. After investigation, it was found that it was caused by two pet food raw material companies in China illegally adding melamine. It is reported that adding melamine to products can increase the apparent protein content, which is the main reason why many companies illegally add this ingredient.

Since the pet food incident in 2007, China has established standards for detecting melamine in feed. Prior to the Sanlu milk powder incident, China did not have relevant indicators and standards for detecting melamine in milk powder. Therefore, Shanghai Anpu Scientific Instrument Co., Ltd. has compiled laboratory consumables for detecting melamine in milk powder based on the melamine detection standard in feed, including standard samples, reagents, chromatography columns, pre-treatment products, etc.

Gas chromatography columns are widely used in petroleum, chemical, biochemical, pharmaceutical and health, food industry, environmental protection and other fields. In addition to quantitative and qualitative analysis, it can also determine physical and chemical constants such as distribution coefficient, activity coefficient, molecular weight, and specific surface area of the sample on the stationary phase. An instrument for analyzing and detecting the various components in a mixed gas.

The gas is carried in by a carrier gas and separated by chromatography columns with different retention properties for the components in the mixture to be detected. It is then sequentially introduced into the detector to obtain detection signals for each component. According to the order of importing detectors, after comparison, the components can be distinguished, and the content of each component can be calculated based on peak height or peak area. The commonly used detectors include: thermal conductivity detector, flame ionization detector, helium ionization detector, ultrasonic detector, photoionization detector, electron capture detector, flame photometric detector, electrochemical detector, mass spectrometry detector, etc.