About the SPE Cartridge Packing Type and Features

Solid phase extraction (SPE) has been recognized as a very useful sample pretreatment technique, as it can avoid many problems caused by liquid-liquid extraction, such as incomplete phase separation and lower quantitative analysis recovery, fragile glassware, and large amounts of organic waste.

Compared to liquid-liquid extraction, SPE is more efficient, easy to achieve quantitative extraction, and fast and automated, while reducing solvent usage and working time.

Packing type and features

1. Mixed-mode Cation Exchanger: A mixed adsorbent having strong cation exchange and reverse retention, which is highly selective for alkaline analytes, and stable in organic solvents. Such as Mixed Mode Octyl(C8)/SCX SPE Cartridges

2. Mixed-mode Anion Exchanger: A mixed adsorbent with strong anion exchange and reverse retention. Highly selective for acidic analytes, stable in organic solvents.

3. Weak Cation Exchanger: Weak cation exchange and reverse retention complex mechanism, which is used to retain and release strongly alkaline analytes, stable in organic solvents.

4. Weak Anion Exchanger: Weak anion exchange and reverse retention complex mechanism, which is used to retain and release strongly acidic analytes, stable in organic solvents.

5. Hydrophilic-Lipophilic Balance: Hydrophilic-lipophilic balance chemical structure, strong hydrophobic water-inflatable polymer adsorbent, even after drying, it still has good retention of analytes and it is stable in many organic solvents.

6. Reverse-Phase Chromatography: Styrene/divinylbenzene as matrix polymer adsorbent

7. C18-Reverse-Phase: A hydrophobic silica matrix C18 bonded phase for the enrichment of analytes in aqueous phase samples.

8. C8-Reverse-Phase: Medium hydrophobic

9. Spherical Silica  NH2: The surface of the adsorbent is weakly alkaline.

10. Spherical Silica  CN: It is weaker than silica gel under positive conditions. It is less hydrophobic than C18/C8 in the reverse condition.

C18A Reversed Phase SPE Cartridges SPE Cartridges C18

11. Spherical Silica Diol: Medium grade, neutral silica matrix.

12. Spherical Silica PSA: Similar to the aminopropyl bonded filler, but with a higher PKa value and a higher ion exchange capacity.

13. Spherical Silica: Polar adsorbents are mainly used to adsorb analytes from non-polar solvents such as hydrocarbon halogenated hydrocarbons or weaker polar esters or ethers, and then washed with more polar solvents such as polar ether ester alcohol acetonitrile-water. It can also be used as a medium-strength cation exchange adsorbent in an aqueous medium, or as a carrier for liquid-liquid partition separation.

14. Neutral-Alumina, Basic-Alumina, and Acid-Alumina: High surface active polar adsorbent, similar to silica gel, with neutral (N) acidity (A) alkaline (B). There are specific π-electron interactions for aromatic hydrocarbon analytes.

15. Florisil: The SPE cartridge is simple, reliable, reproducible, and accurate. The packings can be a silicone-bonded matrix, polymer matrix, and adsorption matrix. The Florisil belongs to the last one. Florisil is a highly selective adsorbent, which consists mainly of three components, silica (84%), magnesium oxide (15.5%), and sodium sulfate (0.5%).

It is a commonly used solid phase extraction packing with good effect and lower cost. It can be used for purification, and separation, etc. of pesticide residues; Separation and removal of endocrine and oil; PCBs, PAHs, separation of nitrogenous compounds and antibiotics in hydrocarbons, etc., which is the must-have sample pretreatment cartridge for the NY761 analytical method. It is often used in the analysis of pesticide residues to remove pigments.