Ultisil XB-C18
– 86 columns
Vendor: Welch Materials
Ultisil XB-C18 columns, featuring high surface coverage and exhaustive endcapping, are an excellent choice as a general purpose C18 column for a wide variety of organic compounds. The bonding chemistry is optimized specifi cally for our base material. Our proprietary double end-capping leads to optimal performance with neutral, polar, acidic, basic, and chelating compounds.
- The most universal C18 for most application
- High surface area coverage and exhaustive endcapping
- Excellent peak shape for polar compounds and strong bases
- Exceptional batch-to-batch and column-to-column reproducibility
- Available in dimensions from analytical to preparative for all sample sizes
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Brand specifications
Every parameter recorded for every column in this Brand is shown here. A single value applies across the Brand; multiple values show what is recorded across its columns.
| Mode | Reversed-Phase | Carbon Load, % | 17.0 |
|---|---|---|---|
| Modification | Silica/C18 | Endcapped | Yes |
| Pore Size (Å) | 120 | pH stability from | 1.5 |
| Surface Area | 320 | pH stability to | 10.0 |
Choose column specifications
Available: 20 – 300 mm
Available: 1 – 21.2 mm
Available: 3 – 10 μm
Pore Size
Recorded value
120 Å
Columns in this brand
Use the selectors above to narrow the list by specification, or search here by P/N or any displayed value.
86 columns shown
| Ult10B181015 | 150 | 10.0 | 10.0 | 120 |
| Ult10B181025 | 250 | 10.0 | 10.0 | 120 |
| Ult10B1821205 | 50 | 21.2 | 10.0 | 120 |
| Ult10B1821215 | 150 | 21.2 | 10.0 | 120 |
| Ult10B1821225 | 250 | 21.2 | 10.0 | 120 |
| Ult10B18315 | 150 | 3.0 | 10.0 | 120 |
| Ult10B18320 | 200 | 3.0 | 10.0 | 120 |
| Ult10B18325 | 250 | 3.0 | 10.0 | 120 |
| Ult10B18330 | 300 | 3.0 | 10.0 | 120 |
| Ult10B184015 | 150 | 4.0 | 10.0 | 120 |
| Ult10B184020 | 200 | 4.0 | 10.0 | 120 |
| Ult10B184025 | 250 | 4.0 | 10.0 | 120 |
| Ult10B184030 | 300 | 4.0 | 10.0 | 120 |
| Ult10B18415 | 150 | 4.6 | 10.0 | 120 |
| Ult10B18420 | 200 | 4.6 | 10.0 | 120 |
| Ult10B18425 | 250 | 4.6 | 10.0 | 120 |
| Ult10B18430 | 300 | 4.6 | 10.0 | 120 |
| Ult3B18102 | 20 | 1.0 | 3.0 | 120 |
| Ult3B18103 | 33 | 1.0 | 3.0 | 120 |
| Ult3B18105 | 50 | 1.0 | 3.0 | 120 |
| Ult3B18110 | 100 | 1.0 | 3.0 | 120 |
| Ult3B18115 | 150 | 1.0 | 3.0 | 120 |
| Ult3B18203 | 33 | 2.1 | 3.0 | 120 |
| Ult3B18205 | 50 | 2.1 | 3.0 | 120 |
| Ult3B18207 | 75 | 2.1 | 3.0 | 120 |
| Ult3B18210 | 100 | 2.1 | 3.0 | 120 |
| Ult3B18215 | 150 | 2.1 | 3.0 | 120 |
| Ult3B18220 | 200 | 2.1 | 3.0 | 120 |
| Ult3B18225 | 250 | 2.1 | 3.0 | 120 |
| Ult3B18303 | 33 | 3.0 | 3.0 | 120 |
| Ult3B18305 | 50 | 3.0 | 3.0 | 120 |
| Ult3B18310 | 100 | 3.0 | 3.0 | 120 |
| Ult3B18315 | 150 | 3.0 | 3.0 | 120 |
| Ult3B18320 | 200 | 3.0 | 3.0 | 120 |
| Ult3B18325 | 250 | 3.0 | 3.0 | 120 |
| Ult3B18330 | 300 | 3.0 | 3.0 | 120 |
| Ult3B184003 | 33 | 4.0 | 3.0 | 120 |
| Ult3B184005 | 50 | 4.0 | 3.0 | 120 |
| Ult3B184010 | 100 | 4.0 | 3.0 | 120 |
| Ult3B184015 | 150 | 4.0 | 3.0 | 120 |
| Ult3B184020 | 200 | 4.0 | 3.0 | 120 |
| Ult3B184025 | 250 | 4.0 | 3.0 | 120 |
| Ult3B18403 | 33 | 4.6 | 3.0 | 120 |
| Ult3B184030 | 300 | 4.0 | 3.0 | 120 |
| Ult3B18405 | 50 | 4.6 | 3.0 | 120 |
| Ult3B18410 | 100 | 4.6 | 3.0 | 120 |
| Ult3B18415 | 150 | 4.6 | 3.0 | 120 |
| Ult3B18420 | 200 | 4.6 | 3.0 | 120 |
| Ult3B18425 | 250 | 4.6 | 3.0 | 120 |
| Ult3B18430 | 300 | 4.6 | 3.0 | 120 |
| Ult5B181015 | 150 | 10.0 | 5.0 | 120 |
| Ult5B181025 | 250 | 10.0 | 5.0 | 120 |
| Ult5B18203 | 33 | 2.1 | 5.0 | 120 |
| Ult5B18205 | 50 | 2.1 | 5.0 | 120 |
| Ult5B18207 | 75 | 2.1 | 5.0 | 120 |
| Ult5B18210 | 100 | 2.1 | 5.0 | 120 |
| Ult5B1821215 | 150 | 21.2 | 5.0 | 120 |
| Ult5B1821225 | 250 | 21.2 | 5.0 | 120 |
| Ult5B182125 | 50 | 21.2 | 5.0 | 120 |
| Ult5B18215 | 150 | 2.1 | 5.0 | 120 |
| Ult5B18220 | 200 | 2.1 | 5.0 | 120 |
| Ult5B18225 | 250 | 2.1 | 5.0 | 120 |
| Ult5B18303 | 33 | 3.0 | 5.0 | 120 |
| Ult5B18305 | 50 | 3.0 | 5.0 | 120 |
| Ult5B18310 | 100 | 3.0 | 5.0 | 120 |
| Ult5B18315 | 150 | 3.0 | 5.0 | 120 |
| Ult5B18320 | 200 | 3.0 | 5.0 | 120 |
| Ult5B18325 | 250 | 3.0 | 5.0 | 120 |
| Ult5B18330 | 300 | 3.0 | 5.0 | 120 |
| Ult5B184003 | 33 | 4.0 | 5.0 | 120 |
| Ult5B184005 | 50 | 4.0 | 5.0 | 120 |
| Ult5B184010 | 100 | 4.0 | 5.0 | 120 |
| Ult5B184012 | 125 | 4.0 | 5.0 | 120 |
| Ult5B184015 | 150 | 4.0 | 5.0 | 120 |
| Ult5B184020 | 200 | 4.0 | 5.0 | 120 |
| Ult5B184025 | 250 | 4.0 | 5.0 | 120 |
| Ult5B18403 | 33 | 4.6 | 5.0 | 120 |
| Ult5B184030 | 300 | 4.0 | 5.0 | 120 |
| Ult5B18405 | 50 | 4.6 | 5.0 | 120 |
| Ult5B18407 | 75 | 4.6 | 5.0 | 120 |
| Ult5B18410 | 100 | 4.6 | 5.0 | 120 |
| Ult5B18412 | 125 | 4.6 | 5.0 | 120 |
| Ult5B18415 | 150 | 4.6 | 5.0 | 120 |
| Ult5B18420 | 200 | 4.6 | 5.0 | 120 |
| Ult5B18425 | 250 | 4.6 | 5.0 | 120 |
| Ult5B18430 | 300 | 4.6 | 5.0 | 120 |
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