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1.Solid phase extraction column is a sample pre-treatment device for extraction, separation and concentration, mainly used for sample pre-treatment of target compounds in various foodstuffs, agricultural and livestock products, environmental samples and biological samples;

2. Used for sample cleanup and analyte concentration prior to liquid chromatography (LC), gas chromatography (GC), ion chromatography, and other techniques. Typical applications include sample cleanup, trace enrichment, desalting, solvent exchange, and sample preservation and storage;

3. Advantages of SPE (SPE) include increased throughput, reduced use of organic solvents and waste generation, improved analyte recovery compared to traditional liquid-liquid extraction, more effective separation of analytes from interfering components, reduced sample pretreatment, and simple, time- and labor-saving operation.