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Compared with low-purity irregular silica, SelectCore silica based SPE cartridges utilize high-purity spherical silica particles as the matrix, and exhibit reproducible recoveries for quick and effective extraction, isolation and concentration of pharmaceuticals from biological fluids and other aqueous sample matrices.
Product | Particle size | Description |
SelectCore Silica | 50 μm | Polar sorbent, used primarily to adsorb analytes from non-polar solvents like hydrocarbons, chloro- or fluoro-subsitituted hydrocarbons or less polar esters and ethers; elution with more polar solvents like polar esters, ethers, alcohols, acetonitrile or water; the binding mechanism can be hydrogen bonding or dipole-dipole interaction. |
SelectCore C18 | 50 μm | Silica based bonded phase, used to adsorb analytes of even weak hydrophobicity from aqueous solutions; typical applications include drugs and their metabolites in serum, plasma or urine, desalting of peptides, trace organics in environmental water samples, organic acids in beverages. |
SelectCore NH2 | 50 μm | Silica based bonded phase with weakly basic surface; can be used as a polar sorbent, like silica, with different selectivity for acidic/basic analytes or as weak anion exchanger in aqueous medium below pH8; applications include phenols and phenolic pigments, petroleum fractionation, saccharides, drugs and drug metabolites. |
SelectCore PSA | 50 μm | Silica based phase with ethylenediamine-N-propyl that contains both primary and secondary amines; A weak anion exchanger with a pKa of 10.1 and 10.9; Similar to aminopropyl SPE phases (NH2) in terms of selectivity, but has a much higher capacity due to presence of secondary amine; Strong affinity and high capacity for removing fatty acids, organic acids, and some polar pigments and sugars when conducting multi-residue pesticide analysis in foods. |
Package | Silica | C18 | NH2 | PSA |
100mg/1mL; 100/pkg | SI050-010100-1 | C18050-010100-1 | NH050-010100-1 | PSA050-010100-1 |
200mg/3mL; 50/pkg | SI050-030200-1 | C18050-030200-1 | NH050-030200-1 | PSA050-030200-1 |
500mg/3mL; 50/pkg | SI050-030500-1 | C18050-030500-1 | NH050-030500-1 | PSA050-030500-1 |
500mg/6mL; 30/pkg | SI050-060500-1 | C18050-060500-1 | NH050-060500-1 | PSA050-060500-1 |
1000mg/6mL; 30/pkg | SI050-061000-1 | C18050-061000-1 | NH050-061000-1 | PSA050-061000-1 |