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An ultra-pure silica gel of more than 99.99% purity is used for the COSMOSIL® SL-II packed column series. Thus, chemical compounds having carbonyl or phenol hydroxyl groups that could not be clearly separated using conventional silica gel columns can be separated with improved reproducibility and with better baseline resolution.
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Material characteristics
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| COSMOSIL® 5SL-II |
| Silica gel |
high purity porous spherical silica |
| Average particle size |
5µm |
| Average pore size |
approx. 120Å |
| Specific surface area |
approx. 300m2/g |
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Scaling up from analytical to preparative
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Several sizes are available for the COSMOSIL® SL-II packed columns for both analytical and preparative applications.
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Ordering information
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| Product name |
Size |
Code No. |
End-fitting |
| COSMOSIL® 5SL-II Guard Column |
4.6mmI.D.x 10mm |
37997-01 |
Waters type |
| 10mmI.D.x 20mm |
37998-81 |
| 28mmI.D.x 50mm |
34359-31 |
| COSMOSIL® 5SL-II Packed Column |
4.6mmI.D.x 50mm |
37999-81 |
| 4.6mmI.D.x 100mm |
38000-01 |
| 4.6mmI.D.x 150mm |
38001-91 |
| 4.6mmI.D.x 250mm |
38002-81 |
| 6mmI.D.x 150mm |
38003-71 |
| 6mmI.D.x 250mm |
38004-61 |
| 10mmI.D.x 250mm |
38005-51 |
| 20mmI.D.x 250mm |
38006-41 |
| 28mmI.D.x 250mm |
34358-61 |
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| (C)2004 Nacalai Tesque, Inc. E-mail: info.intl@nacalai.co.jp |