Ultrasphere
Formerly made by Beckman Coulter, Ultrasphere still has high reputation
The Ultrasphere C18-IP (ion pair) phase was designed especially for ion pair reversed-phase HPLC. In general, the use of ion pairing reagents can reduce column lifetime. This phase is a C18 bonded phase, with substantially increased end capping to allow for maximum coverage which extends column lifetime, compared with the standard Ultrasphere ODS, in ion pair type applications.
Ultrasphere phases
| Phase | Functional Group | Endcapped | Particle, um | Pore, A | Carbon load, % |
| Silica | - | - | 5 | 80 | - |
| C8 | C8 | Yes | 3, 5 | 80 | n/a |
| ODS | C18 | Yes | 3, 5 | 80 | 12 |
| C18-IP | C18 | Yes | 5 | 80 | n/a |
| CN | CN | No | 5 | 80 | n/a |
Reprints
Ofloxacin,
Gentamicin and Tobramycin in Tear (ODS)
α-Tocoferol in Plasma (ODS)
Peptide-E in Muscle
Preparation (ODS)
Polypeptide Isolation
(ODS)
EGF from Acid Extracts (ODS)
Oxysterols in Liver (ODS)
Homocysteine and Other Thiols
in Plasma (C8)
Bilirubin from Native Bile
(ODS)
Neuropeptide-Y from Tissue (ODS)
Benzimidazoles in Fruits
(ODS)
