by Agilent Technologies
ZORBAX Extend-C18
Extend-C18 columns incorporate a unique patented bidentate silane, combined with a double-endcapping process that protects the silica from dissolution at high pH - up to pH 11.5. Columns are best applied for separations of compounds that are either (1) basic and have little or no retention at low or intermediate pHs, (2) more stable or more soluble at high pH, or (3) basic and show poor peak shape at low or intermediate pH.
| Vendor | Agilent Technologies | Pore size | 80 |
| Brand | ZORBAX Extend-C18 | Surface Area | 180 |
| Modifification | Silica/C18 | Endcapped | Yes |
| Mode | Reversed-Phase | Operating Temperature | 60 |
| Particle Size | pH stability from | 2.0 | |
| Length | pH stability to | 11.5 | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Higgins Analytical | HAISIL 300 C18 | Reversed-Phase | Silica/C18 | 2.1 mm | 100 mm | 5.0 μm | 300 Å | On request |
| Agilent Technologies | Agilent Polaris | Reversed-Phase | Silica/C18 | 2.0 mm | 30 mm | 3.0 μm | 180 Å | On request |
| MACHEREY-NAGEL | NUCLEODUR C18 GRAVITY | Reversed-Phase | Silica/C18 | 3.0 mm | 50 mm | 3.0 μm | 110 Å | 439.00 |
| Orochem | Reliasil C18 90 | Reversed-Phase | Silica/C18 | 3.0 mm | 30 mm | 5.0 μm | 90 Å | On request |
| Agilent Technologies | Original ZORBAX | Reversed-Phase | Silica/C18 | 21.0 mm | 250 mm | 7.0 μm | 80 Å | On request |
| GRACE | Vydac MS C18 | Reversed-Phase | Silica/C18 | 0.15 mm | 150 mm | 5.0 μm | 300 Å | On request |
| MACHEREY-NAGEL | NUCLEODUR C18 EC | Reversed-Phase | Silica/C18 | 3.0 mm | 150 mm | 3.0 μm | 110 Å | 347.00 |
| Imtakt | Unison UK-C18 HT | Reversed-Phase | Silica/C18 | 4.6 mm | 30 mm | 3.0 μm | 130 Å | On request |
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