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 | PROTO 200 C18 | Reversed-Phase | Silica/C18 | 20.0 mm | 100 mm | 5.0 μm | 200 Å | On request |
| Phenomenex | Luna C18(2) | Reversed-Phase | Silica/C18 | 4.6 mm | 75 mm | 3.0 μm | 100 Å | On request |
| GL Sciences | InertSustain C18 | Reversed-Phase | Silica/C18 | 3.0 mm | 30 mm | 3.0 μm | 100 Å | On request |
| ACE | ACE C18-HL | Reversed-Phase | Silica/C18 | 21.2 mm | 125 mm | 15.0 μm | 90 Å | On request |
| Thermo Fisher Scientific | Hypesil GOLD | Reversed-Phase | Silica/C18 | 0.15 mm | 100 mm | 5.0 μm | 175 Å | On request |
| GRACE | Alltima HP C18 | Reversed-Phase | Silica/C18 | 2.1 mm | 50 mm | 3.0 μm | 190 Å | On request |
| Higgins Analytical | HAISIL 300 C18 | Reversed-Phase | Silica/C18 | 3.0 mm | 250 mm | 5.0 μm | 300 Å | On request |
| Princeton Chromatography Inc. | PrincetonSPHER OMNI C18-60 | Reversed-Phase | Silica/C18 | 4.6 mm | 150 mm | 10.0 μm | 60 Å | On request |
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