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 | Surface Area | 320 |
| Brand | Xtimate C18 | Carbon Load, % | 14.0 |
| Modifification | Hybrid silica-polymer/C18 | Endcapped | Yes |
| Mode | Reversed-Phase | pH stability from | 1.0 |
| Particle Size | pH stability to | 12.5 | |
| Length | Product usage | Basic compounds | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 21.2 mm | 250 mm | 10.0 μm | — | On request |
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 200 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 250 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 30.0 mm | 250 mm | 10.0 μm | — | On request |
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 10.0 mm | 250 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 100 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 2.1 mm | 100 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate C18 | Reversed-Phase | Hybrid silica-polymer/C18 | 3.0 mm | 200 mm | 5.0 μm | — | On request |
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