Sample pretreatment Solid phase extraction device Extraction column

Solid phase extraction instrument manufacturerInstrument features:

lEach channel is equipped with an independent regulating valve, which is easy to control and accurately controls the flow rate;

l*The spiral disk bracket design allows for free height adjustment and flexible combination of support disks with different apertures, which can accommodate most sampling test tubes;

l*The waste liquid collection bottle can quickly and effectively collect waste liquid, prevent cross contamination, and improve work efficiency.

The application fields of the extraction instrument in production include:

lBiological fluid analysis mainly includes: serum, plasma, blood, urine, and intercellular matrix;

lMilk processing, Baijiu, beer, drinks and juice;

lAnalysis and monitoring of drinking water, groundwater, and sewage;

lVolatile oils, plant tissues, fruits, vegetables, and grains;

lLiquid drug samples, soil, and sediment;

lMeat, fish, and other animal tissues, pills, and other solid medicines.

Sample pretreatment Solid phase extraction device Extraction column instrument Working principle:

Solid phase extraction is a physical extraction process that involves both liquid and solid phases. In solid-phase extraction, the adsorption force of the solid phase on the separated substance is greater than that of the solvent used to dissolve the separated substance. When the sample solution passes through the adsorbent bed, the separated substances concentrate on its surface, while other sample components pass through the adsorbent bed; By using adsorbents that only adsorb the separated substance without adsorbing other sample components, high-purity and concentrated separated substances can be obtained.

When a gas sample passes through a chromatographic column, the fixed phase in the column has different adsorption and dissolution abilities for the components in the measured gas sample, which is also known as the different distribution coefficients of the components in the stationary phase and mobile phase of the gas sample. When the gas sample is carried into the chromatographic column by the carrier gas and continuously moves forward, the components with smaller distribution coefficients (i.e. the ability to be dissolved and adsorbed by the stationary phase) move faster, while the components with larger distribution coefficients move slower. The components with smaller distribution coefficients flow out of the chromatographic column first. The components with high partition coefficients flow out of the chromatographic column to achieve separation of each component.