Purification and enrichment of solid phase extraction equipment

Shanghai Xinzhuang follows the policy of “survival by quality, development by technology, efficiency by management, and reputation by service”. It has an industry-recognized team of experts and first-class scientific talents. With a deep understanding and mastery of scientific instrument technology, On the basis of independent research and development of the core technology of scientific instruments, not only low temperature thermostats, ultrasonic instruments, cabinets, microbiology instruments, ice making refrigeration instruments, laboratory supporting instruments, but also various scientific instrument technologies have been developed. The product structure of the joint development of reserve products. The solid phase extraction technology of the LNB brand solid phase extraction device developed by Shanghai Xinzhuang Instrument Co., Ltd. - since the advent of the solid phase extraction method in the late 1970s, the development of very fast SPE columns with different stationary phases has emerged. The solid phase extraction method is continuously adapted to the pretreatment requirements of various samples, and the solid phase extraction method for different kinds of compounds is gradually improved.

The purification and enrichment of solid phase extraction equipment is the most important:

Solid Phase Extraction is the use of a solid adsorbent to adsorb a target compound in a liquid sample, separate it from the matrix and interfering compound of the sample, and then elute with an eluent or desorb to heat to achieve separation and enrichment. The purpose of the compound. As a sample preparation technology, solid phase extraction has been widely used in the laboratory.

SPE is a column chromatography process with many similarities to high performance liquid chromatography (HPLC) in terms of separation mechanism, choice of stationary phase and solvent. However, the particle size of the SPE column (>40!m) is larger than the HPLC packing (3~10!m). Due to the short column bed and large particle size, the SPE efficiency is much lower than for HPLC columns. A high-performance HPLC column can produce more than 10,000 plates, while a single SPE column can get 10 to 50 plates. Therefore, compounds with very different properties can only be separated by SPE. In this case, instead of isocratic, a typical SPE separation is performed in a digital switching manner (digitaIon-off mode). This means that, through a step gradient, the analyte is either not strongly adsorbed by the stationary phase or completely unretained. Another difference from HPLC is that the SPE column is disposable.

The characteristics of the SPE column itself determine the scope of application. SPE technology with low separation efficiency is mainly used to treat samples. The purpose of the SPE is to: (1) remove the interference material from the sample for subsequent analysis; (2) enrich the trace components to improve the sensitivity of the analysis; (3) change the solvent of the sample to make it and analyze The method is matched; (4) in situ derivatization; (5) desalting of the sample; (6) facilitating storage and transportation of the sample.

Shanghai Xinzhuang specializes in the production of experimental equipment such as solid phase extraction equipment, leading technology, quality assurance, welcome your inquiry to buy

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