Columns for SPE "Presep®" series
Solid-phase extraction, which is used for pretreatment of samples, is extensively employed in various fields, such as pharmaceuticals, foods, and environmental analysis, due to its simplicity and minimal solvent requirement.
It also has many advantages, including the ability to process multiple samples simultaneously in a short time.
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Presep®-C is both ends closed, cartridge type.
Presep® Syringe is one end open type.
Presep® series features
- Can be used in both pressurized and depressurized modes during solid-phase extraction.
- The type and amount of packing material can be customized, with the ability to connect several units depending on the purpose.
(use a connection adapter for syringe type) - High flow speed due to the sharp particle size distribution of packing material.
- High recovery due to packing material designed for solid-phase extraction.
- High reproducibility due to strict quality control.
Product Line-up
More Information
Presep® series packing material list
| Column Name | Packing Materials | Particle diameter(μm) | Applications, characteristics, etc. |
|---|---|---|---|
| C18(ODS) | Octadecyl silane Silica gel | 63 - 212 | Reversed-phase partitioning: separation of hydrophobic substances in water-soluble samples. |
| NH2 | Aminopropyl Silica gel | 38 - 63 | Removal of acidic compounds such as organic acids and fatty acids. |
| Silica gel | Crushed Silica Gel | 75 - 150 | Normal-phase adsorption: separation of low- to middle-polarity components in non-aqueous solutions. |
| Alumina | Basic Alumina (pH 9) | 44 - 149 | Removal of interfering substances in pesticides and environmental samples. |
| Florisil | MgO3Si | 75 - 150 | Lipid removal, pretreatment of pesticide residues in foods. |
| Na2SO4 | Sodium Sulfate Anhydrous | - | Dehydration |
| Diatomaceous Earth, Granular | Diatomaceous Earth, Granular | 500 - 1,400 | Desolvation |
| Polyamide C-200 type M | Polyamide resin | 75 - 150 | Pretreatment of paeoniflorin in Kakkonto extract. |
| RPP | Styrene divinyl benzene polymethacrylate Resin | 30、60 | Trapping of high-polarity substances that cannot be adsorbed to normal ODS, pretreatment of biological sample. |
| RPP-SAX | Basic Anion Exchange Resin (divinyl benzene polymethacrylate) | 40 - 48 | Selective extraction of acidic compounds, extraction of drugs or their metabolites from biological samples (urine, blood, etc.) |
| RPP-WAX | 60 |
Quality control
Our products are designed to minimize variability in quality through initiatives to improve reproducibility between lots. Packing volume, packing condition, basic performance, etc. are tested for general-purpose columns, and recovery of the target compound is tested for application-specific columns. Highly reproducible quality is maintained through these tests.
Example of basic performance test
Presep®-C Silica Gel
The product was connected to HPLC, and analysis was performed under the conditions shown below to confirm the packing status based on the peak shape.
| Eluent | : n-Hexane / CH３CN=99 /1 (v/v) |
| Flow Rate | : 2.0 mL / min. at 35 ℃ |
| Detection | : UV 254nm 0.08 AUFS |
| Injection Vol. | : 20 µL |
| Sample | : 1) Toluene 2) Dimethyl Phthalate 1) / 2) / n-Hexane=1 / 1 / 48 (v/v/v) |
For research use or further manufacturing use only. Not for use in diagnostic procedures.
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