Shanghai Shuangzhuang Instrument Co., Ltd. solid phase extraction device in the solid phase extraction, the solid relative to the separation of the adsorption force than the dissolution of the solvent is greater. When the sample solution passes through the adsorbent bed, the isolate is concentrated on its surface and other sample components pass through the adsorbent bed; high purity and concentrated isolates can be obtained by adsorbents that only adsorb the isolate without adsorbing other sample components. 
Retention and Elution: The most common method in solid-phase extraction is to hold the solid adsorbent in a syringe-like column, pass the sample solution through the adsorbent bed, and pass the compound in the sample either through the adsorbent or onto the adsorbent. (Rely on the relative adsorption of the solvent by the adsorbent). "Retention" is a phenomenon that exists between the adsorbent and the intermolecular molecules of the isolate, so that when the sample solution passes through the adsorbent bed, the isolate does not move on the adsorbent. Retention is the role of three factors: isolates, solvents, and adsorbents. Therefore, the retention behavior of a given isolate varies in the presence of different solvents and adsorbents. "Elution" is the process of removing an adsorbent remaining on an adsorbent from an adsorbent by adding a stronger solvent to the isolate than the adsorbent.
Shanghai Shuangzhuang Instrument Co., Ltd. developed a solid phase extraction device, Shanghai Xinzhuang Instrument Co., Ltd. developed the Xinzhuang brand solid phase extraction device, energy saving and environmental protection, leading domestically. Professional manufacturing is more secure and affordable. Product selection is exquisite, exquisite workmanship, excellent quality and reasonable price. Since the establishment of the company, it has paid great attention to the development, upgrading and updating of products. The continuous introduction of intelligent instruments with good operability and stability is the principle that Xinzhuang instrument has always followed. .
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