GL Sciences has established a successful manufacturing process for ultra pure Silica gel with smooth and rigid surface.
The SEM photos of Inertsil SIL-100A and other brands’ Silica gel are shown below. Particles of Inertsil SIL-100A stand out by the smooth surface, uniformity in size and spherical shape.
The 29Si NMR spectrum is shown below. Signals of SiO4 structure and isolated silanol-group (Si-OH) are detected. It also shows that these silica particles have almost no geminal silanols (Si-(OH)2), which act as the strongest adsorption centres for analytes by hydrogen bonding, dipole interaction, and ion exchange.
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Strong retention of basic compounds
As silanols on the SIlica surface interact with basic compounds, Inertsil SIL-100A retains basic compounds strongly and acidic compounds weakly.
Particle Size |
Particle Shape |
Surface Area |
Pore Size |
Pore Volume |
Bonded Group |
End-Capping |
Carbon Load |
pH Range |
3 µm |
Spherical |
450 m2/g |
100Å |
1.05 mL/g |
None |
No |
0% |
2 - 7.5 |
5µm |
Inertsil® SIL-100A Columns List