J'Sphere ODS
YMC has designed a different approach for creating a range of divergent polarities and improving the consistency in the synthesis of reversed phase packings. YMC kept the C18-alkyl chain length constant, but specifically changed the content of C18 groups at the silica surface, to produce three different J´sphere ODS packings with graduated hydrophobicity.
J'sphere is an ODS column with 4 µm particle size, and combines three different carbon loads.
Excellent resolution
Reproducibility
High column efficiency
| J’sphere ODS-H80 |
J’sphere ODS-M80 |
J’sphere ODS-L80 |
|
| Modification | C18 (USP L1) | ||
| Particle Size | 4 µm | ||
| Pore Size | 8 nm / 80 Å | ||
| Surface Area | 510 m2/g | ||
| Endcapping | yes | ||
| Carbon Load | 22% | 14% | 9% |
| pH Range | 1.0 - 9.0 | 2.0 - 7.5 | |
The exclusive use of C18 groups makes the hydrophobic interaction identical for all three types of J´sphere ODS packings; only the degree of hydrophobicity, i.e. the polarity, is varied.
In addition to the hydrophobic interaction, the surface siloxane groups of J’sphere ODS packings provide a pronounced H-bonding capacity contributing additional selectivity. The ability to interact strongly via H-bonding creates the opportunity to make use of an additional degree of freedom in selectivity. The “controlled hydrogen bonding capacity" of J’sphere ODS packings represents an efficient tool for the chromatographic discrimination of closely related compounds presenting only minor molecular differences.
| Title | Document Type | Language | Phase Type | Download |
| J'Sphere ODS-80 Care and Use | Care and Use Instructions | E | Download | |
| MSDS Silica based NP/RP Bulk | MSDS | E | Download | |
| Analytical stationary phases for HPLC and UHPLC from YMC | Overview | E | Download | |
| YMC Classic Columns | eCatalogue | E | Download | |
| YMC Specialty Columns - YMC Classic Columns | eCatalogue Chapter | E | Download |