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 | pH stability from | 2.0 |
| Modifification | Silica/C18 | pH stability to | 11.5 |
| Mode | Reversed-Phase | Surface Area | 180 |
| Particle Size | Endcapped | Yes | |
| Length | Operating Temperature | 60 | |
| Internal Diameter |
| Vendor | Brand | Mode | Modification | Int. diam. | Length | Particles | Pores | Price |
|---|---|---|---|---|---|---|---|---|
| Varian | Polaris C18-A (ChromSep) | Reversed-Phase | Silica/C18 | 2.0 mm | 50 mm | 3.0 μm | 180 Å | On request |
| ACE | ACE C18-HL | Reversed-Phase | Silica/C18 | 3.0 mm | 20 mm | 5.0 μm | 90 Å | On request |
| RSTech | HECTOR-T C18 | Reversed-Phase | Silica/C18 | 3.9 mm | 150 mm | 5.0 μm | 100 Å | On request |
| Greyhound | Spheripak ODS2 80 | Reversed-Phase | Silica/C18 | 4.6 mm | 250 mm | 10.0 μm | 80 Å | On request |
| MACHEREY-NAGEL | NUCLEODUR C18 HTEC | Reversed-Phase | Silica/C18 | 4.0 mm | 125 mm | 3.0 μm | 110 Å | 511.00 |
| Agilent Technologies | ZORBAX Stablebond | Reversed-Phase | Silica/C18 | 2.0 mm | 30 mm | 3.5 μm | 80 Å | On request |
| RESTEK | Pinnacle DB | Reversed-Phase | Silica/C18 | 4.6 mm | 30 mm | 3.0 μm | 140 Å | On request |
| Orochem | Monitor C18 | Reversed-Phase | Silica/C18 | 1.0 mm | 100 mm | 3.0 μm | 100 Å | On request |
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