Embedded with a Polar Functional Group
Shim-pack GIS RP-Shield contains a polar functional group embedded between silica surface and an octadecyl group, making it stable in 100 % aqueous mobile phases without phase collapse. The embedded polar functional group is also extremely base deactivated, which enables the column to provide superior peak shape for acids.
Shim-pack GIS RP-Shield provides unique selectivity as hydrogen bonding interactions, making it suitable for separations that cannot be achieved by other modes, such as hydrophobic interactions or π-π interactions.
| 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 |
