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 | Length | |
| Brand | Xtimate CN | Internal Diameter | |
| Modifification | Hybrid silica-polymer/CN | Surface Area | 320 |
| Mode | Normal-Phase/Reversed-Phase | pH stability from | 1.0 |
| Particle Size | pH stability to | 12.5 |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 3.0 mm | 250 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 4.0 mm | 50 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 2.1 mm | 50 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 2.1 mm | 30 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 4.6 mm | 300 mm | 3.0 μm | — | On request |
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 4.6 mm | 150 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 2.1 mm | 100 mm | 5.0 μm | — | On request |
| Welch Materials | Xtimate CN | Normal-Phase/Reversed-Phase | Hybrid silica-polymer/CN | 4.6 mm | 250 mm | 3.0 μm | — | On request |
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