Solid phase extraction devices are widely used as ideal equipment for pretreatment
Shanghai Haozhuang Instrument Co., Ltd. has developed the LNB brand solid phase extraction device, which is energy-saving and environmentally friendly, leading the country. Professional manufacturing is more secure and affordable
As a sample preparation technology, solid phase extraction has been more and more widely used in the laboratory. It utilizes the poor ability of the analyte to be adsorbed in different media to purify the target substance, effectively separating the target substance from the interfering components, greatly enhancing the ability to detect analytes, especially trace analytes, and improving the sample to be tested Recovery rate. Such products are widely used in many fields such as pesticide detection, food analysis, medicine, and commodity inspection.
Principle: SPE is a physical extraction process including liquid phase and solid phase. In the SPE process, the adsorption force of the solid to the analyte is greater than the sample mother liquid. When the sample passes through the SPE column, the analyte is adsorbed on the solid surface, and the other components pass through the column with the sample mother liquid. Finally, the analyte is analyzed with an appropriate solvent Take it off. Solid phase extraction (SPE) is a versatile and increasingly popular sample preparation technology, which is based on traditional liquid-liquid extraction, combining similar dissolution mechanism of substance interaction and currently widely used. The basic knowledge of the stationary phase gradually developed. SPE has the characteristics of small amount of organic solvent, convenient, safe and efficient. SPE can be divided into four types according to its similar miscibility mechanism: reverse phase SPE, normal phase SPE, ion exchange SPE, and adsorption SPE. SPE is mostly used to process liquid samples, and the semi-volatile and non-volatile compounds in extraction, concentration and purification can also be used for solid samples, but it must be processed into liquid first. At present, it is mainly used in the analysis of organic substances such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in water, pesticides and herbicides in fruits, vegetables and foods, antibiotics analysis, clinical drug analysis and so on. The SPE device is composed of SPE pillars and accessories. SPE small column is composed of three parts, column tube, sintered pad and packing. SPE accessories generally include vacuum system, vacuum pump, blow-drying device, inert gas source, large-capacity sampler and buffer bottle.
Technical advantages: 1 Each channel is equipped with an inlet regulating valve, which can adjust the flow rate according to the test requirements. 2 The unique spiral disc holder design can freely adjust the height and flexibly combine the support discs with different apertures to satisfy most sampling test tubes. 3 The unique waste liquid collection bottle separates the extraction part from the stored waste liquid part, which not only prevents cross-contamination, but also facilitates the treatment of waste liquid. Solid-phase extraction is a sample pretreatment technology developed in recent years. It is developed by the combination of liquid-solid extraction and column liquid chromatography technology. It is mainly used for sample separation, purification and concentration. Compared with the traditional liquid-liquid extraction method, it can Improve the recovery rate of the analyte, more effectively separate the analyte from the interfering components, reduce the sample pretreatment process, simple operation, save time and effort. Widely used in medicine, food, environment, commodity inspection, chemical industry and other fields.
Haozhuang R & D team's forward-looking technology development vision and strong technical strength are actively in line with the needs of scientific research. By promoting the continuous innovation of Haozhuang brand, Haozhuang's differentiated competitive advantage has been continuously improved, making Haozhuang always proud. The status of the industry leader. Taking advantage of the opportunity of the industrial gradient transfer in Shanghai where Haozhuang Company is located, Haozhuang will implement its headquarters to enter Hong Kong in the next five years, and will deploy Haozhuang Hong Kong Company to the global industry.
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