by Welch Materials
Xtimate is the brand-name for Welch premium HPLC column series. There are two types of Xtimate column, those based on based on Hybride Silica Polymer packing materials, and those based on pure polymer materials.
| Vendor | Welch Materials | Internal Diameter | |
| Brand | Xtimate C8 | Surface Area | 320 |
| Modifification | Hybrid silica-polymer/C8 | Carbon Load, % | 10.0 |
| Mode | Reversed-Phase | Endcapped | Yes |
| Particle Size | pH stability from | 1.0 | |
| Length | pH stability to | 12.5 |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.0 mm | 300 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 300 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 200 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 21.2 mm | 150 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 4.6 mm | 50 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 2.1 mm | 100 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 50 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate C8 | Reversed-Phase | Hybrid silica-polymer/C8 | 3.0 mm | 100 mm | 3.0 μm | — | On request |
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