by Nacalai
Conventionally end-capped C18 columns still have many residual silanol groups on the silica surface of stationary phase that can form ionic bonds with basic compounds. The resulting peak tailing makes accurate quantification of analytes difficult, especially in trace analyses. COSMOSIL 3C18-EB with a better end-capping treatment offers improved peak shape and separation particularly for basic compounds.
| Vendor | Nacalai | Pore size | 120 |
| Brand | COSMOSIL 3C18-EB | Surface Area | 300 |
| Modifification | Silica/C18 | Carbon Load, % | 14.5 |
| Mode | Reversed-Phase | Endcapped | Yes |
| Particle Size | pH stability from | 2.0 | |
| Length | pH stability to | 10.0 | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Aapptec | Spirit Organic | Reversed-Phase | Silica/C18 | 3.0 mm | 100 mm | 5.0 μm | 100 Å | On request |
| ACE | ACE C18-HL | Reversed-Phase | Silica/C18 | 4.6 mm | 250 mm | 5.0 μm | 90 Å | On request |
| Chromenta | Chromenta KAQ C18 | Reversed-Phase | Silica/C18 | 3.0 mm | 100 mm | 5.0 μm | 120 Å | On request |
| RSTech | OptimaPak C18 | Reversed-Phase | Silica/C18 | 10.0 mm | 250 mm | 5.0 μm | — | On request |
| Welch Materials | Ultisil AQ-C18 | Reversed-Phase | Silica/C18 | 1.0 mm | 20 mm | 3.0 μm | 120 Å | On request |
| Sepax Technologies | Sepax Bio 300 C18 | Reversed-Phase | Silica/C18 | 0.75 mm | 150 mm | 5.0 μm | 300 Å | On request |
| MACHEREY-NAGEL | NUCLEODUR POLARTEC | Reversed-Phase | Silica/C18 | 3.0 mm | 50 mm | 5.0 μm | 110 Å | 352.00 |
| KYA Technologies Corporation | HiQ Sil C18W - 120 | Reversed-Phase | Silica/C18 | 4.0 mm | 250 mm | 5.0 μm | 120 Å | On request |
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