Solid phase extraction device with 24 positions

The basic principle of solid phase extraction vacuum device:

Solid phase extraction（Solid-PhaseExtraction, abbreviated asSPE）,It is a widely used and popular sample pretreatment technique that involves both liquid and solid phase extraction processes. It separates the target compound from the sample matrix by the interaction force between the bonding functional groups of the filler, and then uses elution solution or heating desorption to achieve the separation and enrichment of the target compound. It is in traditional“Liquid-liquid extraction（LLE）”Based on the principle of similar solubility between substances and combined with the widely used liquid chromatography（HPLC）Gas chromatography（GC

）Developed from the basic knowledge of fixed phase.During solid-phase extraction, the attraction of the solid phase to the analyte is greater than that of the sample mother liquor. When the sample passes throughSPEWhen the column is small, the analyte is adsorbed on the solid surface (other components pass through with the sample mother liquor)SPE

Little pillar). Then use an appropriate solvent to wash out the analyte adsorbed on the solid surface.SPEAccording to the principle, it can be divided into four types: reverseSPE（RP-SPE）,forward directionSPE（NP-SPE）Ion exchangeSPE（IE-SPE）And adsorptionSPE（Absorpt-SPE

）. In most cases, solid-phase extraction is commonly used to process liquid samples, such as extracting, concentrating, and purifying volatile and semi volatile compounds in the sample, while for solid samples, the solid sample must first be transformed into a liquid sample.

Structural characteristics of solid-phase extraction vacuum device:1．

Prevent cross infection, design atomization vacuum chamber, easy and fast operation.2．

The phase free separation operation is easy to collect analytes and can handle small volume samples.3．The glass vacuum chamber is formed using quartz glass molds, and its wall thickness is uniform, so it can withstand-80Kpa

The above high negative pressure.4．

The extraction column tray and collection rack are made of special polymer materials, which are beautiful and corrosion-resistant, and can be used under high pressure for a long time.5．

The top cover of the vacuum device is made of imported PTFE, which is resistant to strong acid and alkali liquids.6．The pressure regulating valve adopts sanitary grade316L

Made of stainless steel material, it is durable, corrosion-resistant, and resistant to high and low temperatures.7．Recommend using our company as a complementary productSCI-NV