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Compared with 2.0 mmI.D. columns, COSMOSIL® 1.0 mm I.D. columns are 4 times more sensitive and reduce
the solvent consumption by 75%.
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Material characteristics |
| COSMOSIL® |
5C18-MS-II |
5C18- AR-II |
5PYE |
| Silica gel |
high purity porous spherical silica |
high purity porous spherical silica |
high purity porous spherical silica |
| Average particle size |
5µm |
5µm |
5µm |
| Average pore size |
approx. 120Å |
approx. 120Å |
approx. 120Å |
| Specific surface area |
approx. 300m2/g |
approx. 300m2/g |
approx. 300m2/g |
| Stationary phase |
monomeric type octadecyl group |
polymeric type octadecyl group |
2-(1-pyrenyl)ethyl group |
| End capping treatment |
near-perfect treatment |
near-perfect treatment |
near-perfect treatment |
| Carbon content |
approx.16% |
approx. 17% |
approx. 18% |
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Equipment |
The 1.0 mmI.D. columns are more influenced by dead volume of injector, detector cell and tubing than 2.0mmI.D. columns. Big dead volume causes broading and tailing of a peak. The following data were collected using commercially available micro injector, semi-micro detector cell and 50μm capillary.
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| 1.0 mmI.D. ver. 2.0 mmI.D.(Sensitivity) |
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Click  Click |
Ordering information |
| Product name |
Size |
Code No. |
End-fitting |
| COSMOSIL® 5C18-MS-II Packed Column |
1.0 mmI.D.× 50 mm |
02824-31 |
Waters type |
| 1.0 mmI.D.× 150 mm |
02896-01 |
| COSMOSIL® 5C18-AR-II Packed Column |
1.0 mmI.D.× 50 mm |
02955-21 |
| 1.0 mmI.D.× 150 mm |
02951-61 |
| COSMOSIL® 5PYE Packed Column |
1.0 mmI.D.× 150 mm |
02851-71 |
Other sizes may be available. Please enquire! |
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| (C)2004 Nacalai Tesque, Inc. E-mail: info-intel@nacalai.co.jp |