Solid phase extraction instrument with 12 positions

12 bit solid phase extractorIt is developed by combining liquid-solid extraction and liquid chromatography techniques, using solid adsorbents to adsorb target compounds in liquid samples, separate them from the matrix and interfering compounds of the sample, and then use elution solution or heating desorption to achieve the purpose of separating and enriching target compounds (i.e. sample separation, purification, and enrichment)

Basic principle:

12 bit solid phase extractor（Solid Phase Extraction,abbreviationSPE）It is a sample pretreatment technology that has been developed since the mid-1980s. Developed by combining liquid-solid extraction and liquid chromatography techniques. Mainly used for sample separation, purification, and enrichment. The main purpose is to reduce sample matrix interference and improve detection sensitivity.

SPETechnology based on liquid-Solid phase chromatography theory, which uses selective adsorption and selective elution to enrich, separate, and purify samples, is a physical extraction process that includes liquid and solid phases; It can also be approximated as a simple chromatographic process.

SPEIt is a liquid chromatography separation principle that utilizes selective adsorption and selective elution. The commonly used method is to pass the liquid sample solution through an adsorbent, retain the analyte, and then use a solvent of appropriate strength to remove impurities. Then, a small amount of good solvent is used to quickly wash out the analyte, thereby achieving the goal of rapid separation, purification, and concentration. It can also selectively adsorb interfering impurities and allow the measured substance to flow out; Or simultaneously adsorb impurities and the test substance, and then selectively elute the test substance using a suitable solvent.

Operation steps:

The operation varies slightly depending on the different mechanisms of filler retention (whether the filler retains the target compound or impurities). Solid phase extraction generally involves four steps:

1.Filler retains the target compound

activation----Remove impurities from the small column and create a certain solvent environment.

sampling----Dissolve the sample in a certain solvent, transfer it into the column, and keep the components on the column.

rinse----Remove interfering substances.

elute----Wash off the tested substance with a small volume of solvent and collect it.

2.Filler retains impurities

Solid phase extraction generally involves three steps:

activation--Remove impurities from the column and create a certain solvent environment.

sampling--Transfer the sample into the column, at which point most of the target compound will flow out with the sample base solution, and impurities will be retained on the column. Therefore, this step needs to start collecting

elute---Rinse off the components with a small volume of solvent and collect them, then combine the collected solutions.

This situation is often used to remove pigments in food or pesticide residue analysis.

Main features of the product:

●The solid phase extraction instrument is made of highly transparent organic glass with strong corrosion resistance.
●The wall thickness of the vacuum chamber is uniform and can withstand-0.098MpaThe above high negative pressure will not deform when used in a high-pressure environment for a long time.
●The vacuum chamber design has good overall sealing performance, high stability, and uniform compression at all locations.
●The square distribution of extraction columns facilitates grouping experiments, with uniform extraction speed and easy control and adjustment.

●Multi channel can be independently controlled, and the guide needle is made of polytetrafluoroethylene material with strong corrosion resistance.

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The extraction column tray is made of ultra-high polymer material, which is beautiful, corrosion-resistant, and does not deform under high pressure for long-term use.

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The internal test tube rack of the solid-phase extraction instrument is made of polytetrafluoroethylene, so it has * corrosion resistance.

●Anti cross contamination, anti atomization vacuum chamber design, simple and fast operation.