High Steric Selectivity
Shim-pack GIS C18-P is designed with a polymerically bonded octadecyl group, which provides high steric selectivity for separation of planar and non-planar compounds. It achieves complete baseline separation of structurally similar compounds such as vitamin D2 and D3 because of the planarity recognition capability.
Shim-pack GIS C18-P is also ideal for the HPLC analysis of 16 PAH compounds listed as target pollutants by the U.S. EPA.
| Shim-pack GISS | Shim-pack GIS | ||||||
| Reversed Phase | Reversed Phase | Normal Phase / RP | HILIC | ||||
| Chemistry | C18 | C18 | C18-P | RP-Shield | CN | SIL | HILIC |
| Bonded Phase | Octadecyl groups | Octadecyl groups | Octadecyl groups | Octadecyl groups | Cyanopropryl groups | - | Diol groups |
| Features | High speed analysis with ultra-high inertness and high stability |
High retentivity, lower column back pressure, high inertness |
High steric selectivity | Embedded with a polar functional group |
Suitable in either reversed phase or normal phase mode |
Suitable in either reversed phase or normal phase mode |
deal for the separation of highly polar basic compounds |
| Particle Size (µm) | 1.9, 3, 5 | 2, 3, 4, 5, 10 | 3, 5 | 5 | 3, 5 | 3, 5 | 3, 5 |
| Pore Size | 20 nm 200 Å |
10 nm 100 Å |
10 nm 100 Å |
10 nm 100 Å |
10 nm 100 Å |
10 nm 100 Å |
10 nm 100 Å |
| Surface Area (m2/g) | 200 | 450 | 450 | 450 | 450 | 450 | 450 |
| Carbon Loading (%) | 9 | 15 | 29 | 9 | 14 | - | 20 |
| End Cap | Yes | Yes | No | No | No | No | No |
| pH Range | 1-10 | 2-7.5 | 2-7.5 | 2-7.5 | 2-7.5 | 2-7.5 | 2-7.5 |
| USP Code | L1 | L1 | L1 | L1 | L10 | L3 | L20 |
